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* [PATCH v6 00/15] Tegra124 EMC (external memory controller) support
@ 2015-02-12 14:06 Tomeu Vizoso
  2015-02-12 14:06 ` [PATCH v6 01/15] clk: tegra124: Remove old emc clock Tomeu Vizoso
                   ` (14 more replies)
  0 siblings, 15 replies; 21+ messages in thread
From: Tomeu Vizoso @ 2015-02-12 14:06 UTC (permalink / raw)
  To: linux-tegra
  Cc: Javier Martinez Canillas, Mikko Perttunen, Tomeu Vizoso,
	Alexandre Courbot, devicetree, Eduardo Valentin, Ian Campbell,
	Joerg Roedel, Kumar Gala, linux-arm-kernel, linux-kernel,
	Mark Rutland, Mike Turquette, Mikko Perttunen, Paul Walmsley,
	Pawel Moll, Peter De Schrijver, Prashant Gaikwad, Rob Herring,
	Russell King, Stephen Boyd, Stephen Warren, Thierry Reding

Hello,

this v6 mainly contains a rebase on latest linux-next.

There's an outstanding issue with frequencies lower than 102MHz, as the MC IP
complains of EMEM arbitration errors when at those frequencies. Any suggestions
welcome. The downstream kernels that I have seen ignore those errors, but mainline prints a message out, so it's actually visible even if everything else appears to keep working.

So far it has been tested only on a Jetson TK1.

Patch 1: Removes the old EMC clock, that was unused and not functional

Patch 2: Documents bindings for the new long-ram-code property

Patch 3: Adds API for reading the ram code

Patches 4 to 7: Document OF additions

Patch 8: Adds EMC node to Tegra124 DT

Patch 9: Adds timings for Jetson TK1 board

Patch 10: Adds functions to the MC driver so the EMC driver can stay within its
own registers

Patch 11: Adds the actual EMC driver, making use of the new MC API

Patch 12: Adds EMC clock driver, making use of API provided by the EMC driver

Patch 13: Adds debugfs entry for getting and setting the EMC rate

Patch 14: On Tegra124, have the EMC clock be the parent of the MC clock

http://cgit.collabora.com/git/user/tomeu/linux.git/log/?h=emc-v6

Regards,

Tomeu

Mikko Perttunen (9):
  clk: tegra124: Remove old emc clock
  soc/tegra: Add ram code reader helper
  of: Add Tegra124 EMC bindings
  ARM: tegra: Add EMC to Tegra124 device tree
  ARM: tegra: Add EMC timings to Jetson TK1 device tree
  memory: tegra: Add API needed by the EMC driver
  memory: tegra: Add EMC (external memory controller) driver
  clk: tegra: Add EMC clock driver
  memory: tegra: Add debugfs entry for getting and setting the EMC rate

Tomeu Vizoso (6):
  of: Document long-ram-code property in nvidia,tegra20-apbmisc
  of: document new emc-timings subnode in nvidia,tegra124-car
  of: Document timings subnode of nvidia,tegra-mc
  of: document external-memory-controller property in tegra124-car
  clk: Expose clk_hw_reparent to providers
  clk: tegra: Set the EMC clock as the parent of the MC clock

 .../bindings/clock/nvidia,tegra124-car.txt         |   44 +-
 .../memory-controllers/nvidia,tegra-mc.txt         |   84 +-
 .../bindings/memory-controllers/tegra-emc.txt      |  379 +++
 .../bindings/misc/nvidia,tegra20-apbmisc.txt       |    2 +
 arch/arm/boot/dts/tegra124-jetson-tk1-emc.dtsi     | 2469 ++++++++++++++++++++
 arch/arm/boot/dts/tegra124-jetson-tk1.dts          |    2 +
 arch/arm/boot/dts/tegra124.dtsi                    |    8 +
 drivers/clk/clk.c                                  |    8 +
 drivers/clk/tegra/Makefile                         |    2 +-
 drivers/clk/tegra/clk-emc.c                        |  528 +++++
 drivers/clk/tegra/clk-tegra124.c                   |   18 +-
 drivers/clk/tegra/clk.h                            |    3 +
 drivers/memory/tegra/Kconfig                       |   11 +
 drivers/memory/tegra/Makefile                      |    2 +
 drivers/memory/tegra/mc.c                          |  136 ++
 drivers/memory/tegra/tegra124-emc.c                | 1164 +++++++++
 drivers/memory/tegra/tegra124.c                    |   44 +
 drivers/soc/tegra/fuse/tegra-apbmisc.c             |   19 +
 include/linux/clk-provider.h                       |    1 +
 include/soc/tegra/emc.h                            |   19 +
 include/soc/tegra/fuse.h                           |    1 +
 include/soc/tegra/mc.h                             |   14 +-
 22 files changed, 4939 insertions(+), 19 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt
 create mode 100644 arch/arm/boot/dts/tegra124-jetson-tk1-emc.dtsi
 create mode 100644 drivers/clk/tegra/clk-emc.c
 create mode 100644 drivers/memory/tegra/tegra124-emc.c
 create mode 100644 include/soc/tegra/emc.h

-- 
1.9.3


^ permalink raw reply	[flat|nested] 21+ messages in thread

* [PATCH v6 01/15] clk: tegra124: Remove old emc clock
  2015-02-12 14:06 [PATCH v6 00/15] Tegra124 EMC (external memory controller) support Tomeu Vizoso
@ 2015-02-12 14:06 ` Tomeu Vizoso
  2015-02-12 14:06 ` [PATCH v6 02/15] of: Document long-ram-code property in nvidia,tegra20-apbmisc Tomeu Vizoso
                   ` (13 subsequent siblings)
  14 siblings, 0 replies; 21+ messages in thread
From: Tomeu Vizoso @ 2015-02-12 14:06 UTC (permalink / raw)
  To: linux-tegra
  Cc: Javier Martinez Canillas, Mikko Perttunen, Mikko Perttunen,
	Tomeu Vizoso, Peter De Schrijver, Prashant Gaikwad,
	Mike Turquette, Stephen Boyd, Stephen Warren, Thierry Reding,
	Alexandre Courbot, linux-kernel

From: Mikko Perttunen <mperttunen@nvidia.com>

This clock has never been able to do anything.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>

---

v2:	* Don't remove emc_mux as it's being used by the MC clock now
---
 drivers/clk/tegra/clk-tegra124.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/clk/tegra/clk-tegra124.c b/drivers/clk/tegra/clk-tegra124.c
index 9a893f2..d370134 100644
--- a/drivers/clk/tegra/clk-tegra124.c
+++ b/drivers/clk/tegra/clk-tegra124.c
@@ -791,7 +791,6 @@ static struct tegra_clk tegra124_clks[tegra_clk_max] __initdata = {
 	[tegra_clk_i2c2] = { .dt_id = TEGRA124_CLK_I2C2, .present = true },
 	[tegra_clk_uartc] = { .dt_id = TEGRA124_CLK_UARTC, .present = true },
 	[tegra_clk_mipi_cal] = { .dt_id = TEGRA124_CLK_MIPI_CAL, .present = true },
-	[tegra_clk_emc] = { .dt_id = TEGRA124_CLK_EMC, .present = true },
 	[tegra_clk_usb2] = { .dt_id = TEGRA124_CLK_USB2, .present = true },
 	[tegra_clk_usb3] = { .dt_id = TEGRA124_CLK_USB3, .present = true },
 	[tegra_clk_vde_8] = { .dt_id = TEGRA124_CLK_VDE, .present = true },
-- 
1.9.3


^ permalink raw reply	[flat|nested] 21+ messages in thread

* [PATCH v6 02/15] of: Document long-ram-code property in nvidia,tegra20-apbmisc
  2015-02-12 14:06 [PATCH v6 00/15] Tegra124 EMC (external memory controller) support Tomeu Vizoso
  2015-02-12 14:06 ` [PATCH v6 01/15] clk: tegra124: Remove old emc clock Tomeu Vizoso
@ 2015-02-12 14:06 ` Tomeu Vizoso
  2015-02-12 14:06 ` [PATCH v6 03/15] soc/tegra: Add ram code reader helper Tomeu Vizoso
                   ` (12 subsequent siblings)
  14 siblings, 0 replies; 21+ messages in thread
From: Tomeu Vizoso @ 2015-02-12 14:06 UTC (permalink / raw)
  To: linux-tegra
  Cc: Javier Martinez Canillas, Mikko Perttunen, Tomeu Vizoso,
	Rob Herring, Pawel Moll, Mark Rutland, Ian Campbell, Kumar Gala,
	Stephen Warren, Thierry Reding, Alexandre Courbot,
	Peter De Schrijver, Eduardo Valentin, Paul Walmsley, devicetree,
	linux-kernel

Needed to properly decode the ram code register.

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>

---

v3:	* Clarify wording as suggested by Mikko
---
 Documentation/devicetree/bindings/misc/nvidia,tegra20-apbmisc.txt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/misc/nvidia,tegra20-apbmisc.txt b/Documentation/devicetree/bindings/misc/nvidia,tegra20-apbmisc.txt
index 47b205c..4556359 100644
--- a/Documentation/devicetree/bindings/misc/nvidia,tegra20-apbmisc.txt
+++ b/Documentation/devicetree/bindings/misc/nvidia,tegra20-apbmisc.txt
@@ -10,3 +10,5 @@ Required properties:
        The second entry gives the physical address and length of the
        registers indicating the strapping options.
 
+Optional properties:
+- nvidia,long-ram-code: If present, the RAM code is long (4 bit). If not, short (2 bit).
-- 
1.9.3


^ permalink raw reply	[flat|nested] 21+ messages in thread

* [PATCH v6 03/15] soc/tegra: Add ram code reader helper
  2015-02-12 14:06 [PATCH v6 00/15] Tegra124 EMC (external memory controller) support Tomeu Vizoso
  2015-02-12 14:06 ` [PATCH v6 01/15] clk: tegra124: Remove old emc clock Tomeu Vizoso
  2015-02-12 14:06 ` [PATCH v6 02/15] of: Document long-ram-code property in nvidia,tegra20-apbmisc Tomeu Vizoso
@ 2015-02-12 14:06 ` Tomeu Vizoso
  2015-03-02  8:46   ` Alexandre Courbot
  2015-02-12 14:06 ` [PATCH v6 04/15] of: document new emc-timings subnode in nvidia,tegra124-car Tomeu Vizoso
                   ` (11 subsequent siblings)
  14 siblings, 1 reply; 21+ messages in thread
From: Tomeu Vizoso @ 2015-02-12 14:06 UTC (permalink / raw)
  To: linux-tegra
  Cc: Javier Martinez Canillas, Mikko Perttunen, Mikko Perttunen,
	Tomeu Vizoso, Stephen Warren, Thierry Reding, Alexandre Courbot,
	Peter De Schrijver, linux-kernel

From: Mikko Perttunen <mperttunen@nvidia.com>

Needed for the EMC and MC drivers to know what timings from the DT to use.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>

---

v4: Replace magic number with PMC_STRAPPING_OPT_A_RAM_CODE_SHIFT
---
 drivers/soc/tegra/fuse/tegra-apbmisc.c | 19 +++++++++++++++++++
 include/soc/tegra/fuse.h               |  1 +
 2 files changed, 20 insertions(+)

diff --git a/drivers/soc/tegra/fuse/tegra-apbmisc.c b/drivers/soc/tegra/fuse/tegra-apbmisc.c
index 3bf5aba..dc96a62 100644
--- a/drivers/soc/tegra/fuse/tegra-apbmisc.c
+++ b/drivers/soc/tegra/fuse/tegra-apbmisc.c
@@ -28,8 +28,13 @@
 #define APBMISC_SIZE	0x64
 #define FUSE_SKU_INFO	0x10
 
+#define PMC_STRAPPING_OPT_A_RAM_CODE_SHIFT	4
+#define PMC_STRAPPING_OPT_A_RAM_CODE_MASK_LONG	(0xf << PMC_STRAPPING_OPT_A_RAM_CODE_SHIFT)
+#define PMC_STRAPPING_OPT_A_RAM_CODE_MASK_SHORT	(0x3 << PMC_STRAPPING_OPT_A_RAM_CODE_SHIFT)
+
 static void __iomem *apbmisc_base;
 static void __iomem *strapping_base;
+static bool          long_ram_code;
 
 u32 tegra_read_chipid(void)
 {
@@ -54,6 +59,18 @@ u32 tegra_read_straps(void)
 		return 0;
 }
 
+u32 tegra_read_ram_code(void)
+{
+	u32 straps = tegra_read_straps();
+
+	if (long_ram_code)
+		straps &= PMC_STRAPPING_OPT_A_RAM_CODE_MASK_LONG;
+	else
+		straps &= PMC_STRAPPING_OPT_A_RAM_CODE_MASK_SHORT;
+
+	return straps >> PMC_STRAPPING_OPT_A_RAM_CODE_SHIFT;
+}
+
 static const struct of_device_id apbmisc_match[] __initconst = {
 	{ .compatible = "nvidia,tegra20-apbmisc", },
 	{},
@@ -112,4 +129,6 @@ void __init tegra_init_apbmisc(void)
 	strapping_base = of_iomap(np, 1);
 	if (!strapping_base)
 		pr_err("ioremap tegra strapping_base failed\n");
+
+	long_ram_code = of_property_read_bool(np, "nvidia,long-ram-code");
 }
diff --git a/include/soc/tegra/fuse.h b/include/soc/tegra/fuse.h
index b5f7b5f..b019e34 100644
--- a/include/soc/tegra/fuse.h
+++ b/include/soc/tegra/fuse.h
@@ -56,6 +56,7 @@ struct tegra_sku_info {
 };
 
 u32 tegra_read_straps(void);
+u32 tegra_read_ram_code(void);
 u32 tegra_read_chipid(void);
 int tegra_fuse_readl(unsigned long offset, u32 *value);
 
-- 
1.9.3


^ permalink raw reply	[flat|nested] 21+ messages in thread

* [PATCH v6 04/15] of: document new emc-timings subnode in nvidia,tegra124-car
  2015-02-12 14:06 [PATCH v6 00/15] Tegra124 EMC (external memory controller) support Tomeu Vizoso
                   ` (2 preceding siblings ...)
  2015-02-12 14:06 ` [PATCH v6 03/15] soc/tegra: Add ram code reader helper Tomeu Vizoso
@ 2015-02-12 14:06 ` Tomeu Vizoso
  2015-02-12 14:06 ` [PATCH v6 05/15] of: Document timings subnode of nvidia,tegra-mc Tomeu Vizoso
                   ` (10 subsequent siblings)
  14 siblings, 0 replies; 21+ messages in thread
From: Tomeu Vizoso @ 2015-02-12 14:06 UTC (permalink / raw)
  To: linux-tegra
  Cc: Javier Martinez Canillas, Mikko Perttunen, Tomeu Vizoso,
	Rob Herring, Pawel Moll, Mark Rutland, Ian Campbell, Kumar Gala,
	Stephen Warren, Thierry Reding, Alexandre Courbot, Paul Walmsley,
	Peter De Schrijver, devicetree, linux-kernel

The EMC clock needs some extra information for changing its rate.

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>

---

v5:	* Remove constraint on the unit-address of the timings and timing subnodes

v4:	* Remove comma from unit-address of CAR node in the example
	* Simplify reg property value in the example
---
 .../bindings/clock/nvidia,tegra124-car.txt         | 42 +++++++++++++++++++++-
 1 file changed, 41 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/clock/nvidia,tegra124-car.txt b/Documentation/devicetree/bindings/clock/nvidia,tegra124-car.txt
index c6620bc..c3891ce 100644
--- a/Documentation/devicetree/bindings/clock/nvidia,tegra124-car.txt
+++ b/Documentation/devicetree/bindings/clock/nvidia,tegra124-car.txt
@@ -21,10 +21,31 @@ Required properties :
   In clock consumers, this cell represents the bit number in the CAR's
   array of CLK_RST_CONTROLLER_RST_DEVICES_* registers.
 
+The node should contain a "emc-timings" subnode for each supported RAM type (see
+field RAM_CODE in register PMC_STRAPPING_OPT_A).
+
+Required properties for "emc-timings" nodes :
+- nvidia,ram-code : Should contain the value of RAM_CODE this timing set
+  is used for.
+
+Each "emc-timings" node should contain a "timing" subnode for every supported
+EMC clock rate.
+
+Required properties for "timing" nodes :
+- clock-frequency : Should contain the memory clock rate to which this timing
+relates.
+- nvidia,parent-clock-frequency : Should contain the rate at which the current
+parent of the EMC clock should be running at this timing.
+- clocks : Must contain an entry for each entry in clock-names.
+  See ../clocks/clock-bindings.txt for details.
+- clock-names : Must include the following entries:
+  - emc-parent : the clock that should be the parent of the EMC clock at this
+timing.
+
 Example SoC include file:
 
 / {
-	tegra_car: clock {
+	tegra_car: clock@60006000 {
 		compatible = "nvidia,tegra124-car";
 		reg = <0x60006000 0x1000>;
 		#clock-cells = <1>;
@@ -62,4 +83,23 @@ Example board file:
 	&tegra_car {
 		clocks = <&clk_32k> <&osc>;
 	};
+
+	clock@60006000 {
+		emc-timings-3 {
+			nvidia,ram-code = <3>;
+
+			timing-12750000 {
+				clock-frequency = <12750000>;
+				nvidia,parent-clock-frequency = <408000000>;
+				clocks = <&tegra_car TEGRA124_CLK_PLL_P>;
+				clock-names = "emc-parent";
+			};
+			timing-20400000 {
+				clock-frequency = <20400000>;
+				nvidia,parent-clock-frequency = <408000000>;
+				clocks = <&tegra_car TEGRA124_CLK_PLL_P>;
+				clock-names = "emc-parent";
+			};
+		};
+	};
 };
-- 
1.9.3


^ permalink raw reply	[flat|nested] 21+ messages in thread

* [PATCH v6 05/15] of: Document timings subnode of nvidia,tegra-mc
  2015-02-12 14:06 [PATCH v6 00/15] Tegra124 EMC (external memory controller) support Tomeu Vizoso
                   ` (3 preceding siblings ...)
  2015-02-12 14:06 ` [PATCH v6 04/15] of: document new emc-timings subnode in nvidia,tegra124-car Tomeu Vizoso
@ 2015-02-12 14:06 ` Tomeu Vizoso
  2015-02-12 14:06 ` [PATCH v6 06/15] of: Add Tegra124 EMC bindings Tomeu Vizoso
                   ` (9 subsequent siblings)
  14 siblings, 0 replies; 21+ messages in thread
From: Tomeu Vizoso @ 2015-02-12 14:06 UTC (permalink / raw)
  To: linux-tegra
  Cc: Javier Martinez Canillas, Mikko Perttunen, Tomeu Vizoso,
	Rob Herring, Pawel Moll, Mark Rutland, Ian Campbell, Kumar Gala,
	Stephen Warren, Thierry Reding, Alexandre Courbot, devicetree,
	linux-kernel

The MC driver needs some timing-specific information to program the EMEM during
a rate change of the EMC clock.

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>

---

v4:	* Add more information about nvidia,emem-configuration
	* Remove mandatory naming of the timings subnode
	* Remove constraint on the unit-address of the timings and timing subnodes
---
 .../memory-controllers/nvidia,tegra-mc.txt         | 84 +++++++++++++++++++++-
 1 file changed, 82 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra-mc.txt b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra-mc.txt
index f3db93c..3338a28 100644
--- a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra-mc.txt
+++ b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra-mc.txt
@@ -1,6 +1,9 @@
 NVIDIA Tegra Memory Controller device tree bindings
 ===================================================
 
+memory-controller node
+----------------------
+
 Required properties:
 - compatible: Should be "nvidia,tegra<chip>-mc"
 - reg: Physical base address and length of the controller's registers.
@@ -15,9 +18,49 @@ Required properties:
 This device implements an IOMMU that complies with the generic IOMMU binding.
 See ../iommu/iommu.txt for details.
 
-Example:
---------
+emc-timings subnode
+-------------------
+
+The node should contain a "emc-timings" subnode for each supported RAM type (see field RAM_CODE in
+register PMC_STRAPPING_OPT_A).
+
+Required properties for "emc-timings" nodes :
+- nvidia,ram-code : Should contain the value of RAM_CODE this timing set is used for.
+
+timing subnode
+--------------
+
+Each "emc-timings" node should contain a subnode for every supported EMC clock rate.
+
+Required properties for timing nodes :
+- clock-frequency : Should contain the memory clock rate in Hz.
+- nvidia,emem-configuration : Values to be written to the EMEM register block. For the Tegra124 SoC
+(see section "15.6.1 MC Registers" in the TRM), these are the registers whose values need to be
+specified, according to the board documentation:
+
+	MC_EMEM_ARB_CFG
+	MC_EMEM_ARB_OUTSTANDING_REQ
+	MC_EMEM_ARB_TIMING_RCD
+	MC_EMEM_ARB_TIMING_RP
+	MC_EMEM_ARB_TIMING_RC
+	MC_EMEM_ARB_TIMING_RAS
+	MC_EMEM_ARB_TIMING_FAW
+	MC_EMEM_ARB_TIMING_RRD
+	MC_EMEM_ARB_TIMING_RAP2PRE
+	MC_EMEM_ARB_TIMING_WAP2PRE
+	MC_EMEM_ARB_TIMING_R2R
+	MC_EMEM_ARB_TIMING_W2W
+	MC_EMEM_ARB_TIMING_R2W
+	MC_EMEM_ARB_TIMING_W2R
+	MC_EMEM_ARB_DA_TURNS
+	MC_EMEM_ARB_DA_COVERS
+	MC_EMEM_ARB_MISC0
+	MC_EMEM_ARB_MISC1
+	MC_EMEM_ARB_RING1_THROTTLE
 
+Example SoC include file:
+
+/ {
 	mc: memory-controller@0,70019000 {
 		compatible = "nvidia,tegra124-mc";
 		reg = <0x0 0x70019000 0x0 0x1000>;
@@ -34,3 +77,40 @@ Example:
 		...
 		iommus = <&mc TEGRA_SWGROUP_SDMMC1A>;
 	};
+};
+
+Example board file:
+
+/ {
+	memory-controller@0,70019000 {
+		emc-timings-3 {
+			nvidia,ram-code = <3>;
+
+			timing-12750000 {
+				clock-frequency = <12750000>;
+
+				nvidia,emem-configuration = <
+					0x40040001 /* MC_EMEM_ARB_CFG */
+					0x8000000a /* MC_EMEM_ARB_OUTSTANDING_REQ */
+					0x00000001 /* MC_EMEM_ARB_TIMING_RCD */
+					0x00000001 /* MC_EMEM_ARB_TIMING_RP */
+					0x00000002 /* MC_EMEM_ARB_TIMING_RC */
+					0x00000000 /* MC_EMEM_ARB_TIMING_RAS */
+					0x00000002 /* MC_EMEM_ARB_TIMING_FAW */
+					0x00000001 /* MC_EMEM_ARB_TIMING_RRD */
+					0x00000002 /* MC_EMEM_ARB_TIMING_RAP2PRE */
+					0x00000008 /* MC_EMEM_ARB_TIMING_WAP2PRE */
+					0x00000003 /* MC_EMEM_ARB_TIMING_R2R */
+					0x00000002 /* MC_EMEM_ARB_TIMING_W2W */
+					0x00000003 /* MC_EMEM_ARB_TIMING_R2W */
+					0x00000006 /* MC_EMEM_ARB_TIMING_W2R */
+					0x06030203 /* MC_EMEM_ARB_DA_TURNS */
+					0x000a0402 /* MC_EMEM_ARB_DA_COVERS */
+					0x77e30303 /* MC_EMEM_ARB_MISC0 */
+					0x70000f03 /* MC_EMEM_ARB_MISC1 */
+					0x001f0000 /* MC_EMEM_ARB_RING1_THROTTLE */
+				>;
+			};
+		};
+	};
+};
-- 
1.9.3


^ permalink raw reply	[flat|nested] 21+ messages in thread

* [PATCH v6 06/15] of: Add Tegra124 EMC bindings
  2015-02-12 14:06 [PATCH v6 00/15] Tegra124 EMC (external memory controller) support Tomeu Vizoso
                   ` (4 preceding siblings ...)
  2015-02-12 14:06 ` [PATCH v6 05/15] of: Document timings subnode of nvidia,tegra-mc Tomeu Vizoso
@ 2015-02-12 14:06 ` Tomeu Vizoso
  2015-03-02  8:47   ` Alexandre Courbot
  2015-02-12 14:06 ` [PATCH v6 07/15] of: document external-memory-controller property in tegra124-car Tomeu Vizoso
                   ` (8 subsequent siblings)
  14 siblings, 1 reply; 21+ messages in thread
From: Tomeu Vizoso @ 2015-02-12 14:06 UTC (permalink / raw)
  To: linux-tegra
  Cc: Javier Martinez Canillas, Mikko Perttunen, Mikko Perttunen,
	Tomeu Vizoso, Rob Herring, Pawel Moll, Mark Rutland,
	Ian Campbell, Kumar Gala, Stephen Warren, Thierry Reding,
	Alexandre Courbot, devicetree, linux-kernel

From: Mikko Perttunen <mperttunen@nvidia.com>

Add binding documentation for the nvidia,tegra124-emc device tree node.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>

---

v5:	* Add a short description for each of the register properties

v4:	* Remove mandatory naming of the timings subnode
	* Remove constraint on the unit-address of the timings and timing subnodes
	* Add some more information about nvidia,emc-configuration
	* Make the example complete

v2:	* Specify the unit addresses for the timings and timing nodes
---
 .../bindings/memory-controllers/tegra-emc.txt      | 379 +++++++++++++++++++++
 1 file changed, 379 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt

diff --git a/Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt b/Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt
new file mode 100644
index 0000000..da923b1
--- /dev/null
+++ b/Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt
@@ -0,0 +1,379 @@
+NVIDIA Tegra124 SoC EMC (external memory controller)
+====================================================
+
+Required properties :
+- compatible : Should be "nvidia,tegra124-emc".
+- reg : physical base address and length of the controller's registers.
+- nvidia,memory-controller : phandle of the MC driver.
+
+The node should contain a "emc-timings" subnode for each supported RAM type (see field RAM_CODE in
+register PMC_STRAPPING_OPT_A), with its unit address being its RAM_CODE.
+
+Required properties for "emc-timings" nodes :
+- nvidia,ram-code : Should contain the value of RAM_CODE this timing set is used for.
+
+Each "emc-timings" node should contain a "timing" subnode for every supported EMC clock rate. The
+"timing" subnodes should have the clock rate in Hz as their unit address.
+
+Required properties for "timing" nodes :
+- clock-frequency : Should contain the memory clock rate in Hz.
+- The following properties contain EMC timing characterization values (specified in the board
+documentation) :
+  - nvidia,emc-auto-cal-config : EMC_AUTO_CAL_CONFIG
+  - nvidia,emc-auto-cal-config2 : EMC_AUTO_CAL_CONFIG2
+  - nvidia,emc-auto-cal-config3 : EMC_AUTO_CAL_CONFIG3
+  - nvidia,emc-auto-cal-interval : EMC_AUTO_CAL_INTERVAL
+  - nvidia,emc-bgbias-ctl0 : EMC_BGBIAS_CTL0
+  - nvidia,emc-cfg : EMC_CFG
+  - nvidia,emc-cfg-2 : EMC_CFG_2
+  - nvidia,emc-cfg-dig-dll : EMC_CFG_DIG_DLL
+  - nvidia,emc-ctt-term-ctrl : EMC_CTT_TERM_CTRL
+  - nvidia,emc-mode-1 : Mode Register 1
+  - nvidia,emc-mode-2 : Mode Register 2
+  - nvidia,emc-mode-4 : Mode Register 4
+  - nvidia,emc-mode-reset : Mode Register 0
+  - nvidia,emc-mrs-wait-cnt : EMC_MRS_WAIT_CNT
+  - nvidia,emc-sel-dpd-ctrl : EMC_SEL_DPD_CTRL
+  - nvidia,emc-xm2dqspadctrl2 : EMC_XM2DQSPADCTRL2
+  - nvidia,emc-zcal-cnt-long : EMC_ZCAL_WAIT_CNT
+  - nvidia,emc-zcal-interval : EMC_ZCAL_INTERVAL
+- nvidia,emc-configuration : EMC timing characterization data. These are the registers (see section
+"15.6.2 EMC Registers" in the TRM) whose values need to be specified, according to the board
+documentation:
+
+	EMC_RC
+	EMC_RFC
+	EMC_RFC_SLR
+	EMC_RAS
+	EMC_RP
+	EMC_R2W
+	EMC_W2R
+	EMC_R2P
+	EMC_W2P
+	EMC_RD_RCD
+	EMC_WR_RCD
+	EMC_RRD
+	EMC_REXT
+	EMC_WEXT
+	EMC_WDV
+	EMC_WDV_MASK
+	EMC_QUSE
+	EMC_QUSE_WIDTH
+	EMC_IBDLY
+	EMC_EINPUT
+	EMC_EINPUT_DURATION
+	EMC_PUTERM_EXTRA
+	EMC_PUTERM_WIDTH
+	EMC_PUTERM_ADJ
+	EMC_CDB_CNTL_1
+	EMC_CDB_CNTL_2
+	EMC_CDB_CNTL_3
+	EMC_QRST
+	EMC_QSAFE
+	EMC_RDV
+	EMC_RDV_MASK
+	EMC_REFRESH
+	EMC_BURST_REFRESH_NUM
+	EMC_PRE_REFRESH_REQ_CNT
+	EMC_PDEX2WR
+	EMC_PDEX2RD
+	EMC_PCHG2PDEN
+	EMC_ACT2PDEN
+	EMC_AR2PDEN
+	EMC_RW2PDEN
+	EMC_TXSR
+	EMC_TXSRDLL
+	EMC_TCKE
+	EMC_TCKESR
+	EMC_TPD
+	EMC_TFAW
+	EMC_TRPAB
+	EMC_TCLKSTABLE
+	EMC_TCLKSTOP
+	EMC_TREFBW
+	EMC_FBIO_CFG6
+	EMC_ODT_WRITE
+	EMC_ODT_READ
+	EMC_FBIO_CFG5
+	EMC_CFG_DIG_DLL
+	EMC_CFG_DIG_DLL_PERIOD
+	EMC_DLL_XFORM_DQS0
+	EMC_DLL_XFORM_DQS1
+	EMC_DLL_XFORM_DQS2
+	EMC_DLL_XFORM_DQS3
+	EMC_DLL_XFORM_DQS4
+	EMC_DLL_XFORM_DQS5
+	EMC_DLL_XFORM_DQS6
+	EMC_DLL_XFORM_DQS7
+	EMC_DLL_XFORM_DQS8
+	EMC_DLL_XFORM_DQS9
+	EMC_DLL_XFORM_DQS10
+	EMC_DLL_XFORM_DQS11
+	EMC_DLL_XFORM_DQS12
+	EMC_DLL_XFORM_DQS13
+	EMC_DLL_XFORM_DQS14
+	EMC_DLL_XFORM_DQS15
+	EMC_DLL_XFORM_QUSE0
+	EMC_DLL_XFORM_QUSE1
+	EMC_DLL_XFORM_QUSE2
+	EMC_DLL_XFORM_QUSE3
+	EMC_DLL_XFORM_QUSE4
+	EMC_DLL_XFORM_QUSE5
+	EMC_DLL_XFORM_QUSE6
+	EMC_DLL_XFORM_QUSE7
+	EMC_DLL_XFORM_ADDR0
+	EMC_DLL_XFORM_ADDR1
+	EMC_DLL_XFORM_ADDR2
+	EMC_DLL_XFORM_ADDR3
+	EMC_DLL_XFORM_ADDR4
+	EMC_DLL_XFORM_ADDR5
+	EMC_DLL_XFORM_QUSE8
+	EMC_DLL_XFORM_QUSE9
+	EMC_DLL_XFORM_QUSE10
+	EMC_DLL_XFORM_QUSE11
+	EMC_DLL_XFORM_QUSE12
+	EMC_DLL_XFORM_QUSE13
+	EMC_DLL_XFORM_QUSE14
+	EMC_DLL_XFORM_QUSE15
+	EMC_DLI_TRIM_TXDQS0
+	EMC_DLI_TRIM_TXDQS1
+	EMC_DLI_TRIM_TXDQS2
+	EMC_DLI_TRIM_TXDQS3
+	EMC_DLI_TRIM_TXDQS4
+	EMC_DLI_TRIM_TXDQS5
+	EMC_DLI_TRIM_TXDQS6
+	EMC_DLI_TRIM_TXDQS7
+	EMC_DLI_TRIM_TXDQS8
+	EMC_DLI_TRIM_TXDQS9
+	EMC_DLI_TRIM_TXDQS10
+	EMC_DLI_TRIM_TXDQS11
+	EMC_DLI_TRIM_TXDQS12
+	EMC_DLI_TRIM_TXDQS13
+	EMC_DLI_TRIM_TXDQS14
+	EMC_DLI_TRIM_TXDQS15
+	EMC_DLL_XFORM_DQ0
+	EMC_DLL_XFORM_DQ1
+	EMC_DLL_XFORM_DQ2
+	EMC_DLL_XFORM_DQ3
+	EMC_DLL_XFORM_DQ4
+	EMC_DLL_XFORM_DQ5
+	EMC_DLL_XFORM_DQ6
+	EMC_DLL_XFORM_DQ7
+	EMC_XM2CMDPADCTRL
+	EMC_XM2CMDPADCTRL4
+	EMC_XM2CMDPADCTRL5
+	EMC_XM2DQSPADCTRL2
+	EMC_XM2DQPADCTRL2
+	EMC_XM2DQPADCTRL3
+	EMC_XM2CLKPADCTRL
+	EMC_XM2CLKPADCTRL2
+	EMC_XM2COMPPADCTRL
+	EMC_XM2VTTGENPADCTRL
+	EMC_XM2VTTGENPADCTRL2
+	EMC_XM2VTTGENPADCTRL3
+	EMC_XM2DQSPADCTRL3
+	EMC_XM2DQSPADCTRL4
+	EMC_XM2DQSPADCTRL5
+	EMC_XM2DQSPADCTRL6
+	EMC_DSR_VTTGEN_DRV
+	EMC_TXDSRVTTGEN
+	EMC_FBIO_SPARE
+	EMC_ZCAL_INTERVAL
+	EMC_ZCAL_WAIT_CNT
+	EMC_MRS_WAIT_CNT
+	EMC_MRS_WAIT_CNT2
+	EMC_CTT
+	EMC_CTT_DURATION
+	EMC_CFG_PIPE
+	EMC_DYN_SELF_REF_CONTROL
+	EMC_QPOP
+
+Example SoC include file:
+
+/ {
+	emc@0,7001b000 {
+		compatible = "nvidia,tegra124-emc";
+		reg = <0x0 0x7001b000 0x0 0x1000>;
+
+		nvidia,memory-controller = <&mc>;
+	};
+};
+
+Example board file:
+
+/ {
+	emc@0,7001b000 {
+		emc-timings-3 {
+			nvidia,ram-code = <3>;
+
+			timing-12750000 {
+				clock-frequency = <12750000>;
+
+				nvidia,emc-zcal-cnt-long = <0x00000042>;
+				nvidia,emc-auto-cal-interval = <0x001fffff>;
+				nvidia,emc-ctt-term-ctrl = <0x00000802>;
+				nvidia,emc-cfg = <0x73240000>;
+				nvidia,emc-cfg-2 = <0x000008c5>;
+				nvidia,emc-sel-dpd-ctrl = <0x00040128>;
+				nvidia,emc-cfg-dig-dll = <0x002c0068>;
+				nvidia,emc-bgbias-ctl0 = <0x00000008>;
+				nvidia,emc-auto-cal-config = <0xa1430000>;
+				nvidia,emc-auto-cal-config2 = <0x00000000>;
+				nvidia,emc-auto-cal-config3 = <0x00000000>;
+				nvidia,emc-mode-reset = <0x80001221>;
+				nvidia,emc-mode-1 = <0x80100003>;
+				nvidia,emc-mode-2 = <0x80200008>;
+				nvidia,emc-mode-4 = <0x00000000>;
+
+				nvidia,emc-configuration = <
+					0x00000000 /* EMC_RC */
+					0x00000003 /* EMC_RFC */
+					0x00000000 /* EMC_RFC_SLR */
+					0x00000000 /* EMC_RAS */
+					0x00000000 /* EMC_RP */
+					0x00000004 /* EMC_R2W */
+					0x0000000a /* EMC_W2R */
+					0x00000003 /* EMC_R2P */
+					0x0000000b /* EMC_W2P */
+					0x00000000 /* EMC_RD_RCD */
+					0x00000000 /* EMC_WR_RCD */
+					0x00000003 /* EMC_RRD */
+					0x00000003 /* EMC_REXT */
+					0x00000000 /* EMC_WEXT */
+					0x00000006 /* EMC_WDV */
+					0x00000006 /* EMC_WDV_MASK */
+					0x00000006 /* EMC_QUSE */
+					0x00000002 /* EMC_QUSE_WIDTH */
+					0x00000000 /* EMC_IBDLY */
+					0x00000005 /* EMC_EINPUT */
+					0x00000005 /* EMC_EINPUT_DURATION */
+					0x00010000 /* EMC_PUTERM_EXTRA */
+					0x00000003 /* EMC_PUTERM_WIDTH */
+					0x00000000 /* EMC_PUTERM_ADJ */
+					0x00000000 /* EMC_CDB_CNTL_1 */
+					0x00000000 /* EMC_CDB_CNTL_2 */
+					0x00000000 /* EMC_CDB_CNTL_3 */
+					0x00000004 /* EMC_QRST */
+					0x0000000c /* EMC_QSAFE */
+					0x0000000d /* EMC_RDV */
+					0x0000000f /* EMC_RDV_MASK */
+					0x00000060 /* EMC_REFRESH */
+					0x00000000 /* EMC_BURST_REFRESH_NUM */
+					0x00000018 /* EMC_PRE_REFRESH_REQ_CNT */
+					0x00000002 /* EMC_PDEX2WR */
+					0x00000002 /* EMC_PDEX2RD */
+					0x00000001 /* EMC_PCHG2PDEN */
+					0x00000000 /* EMC_ACT2PDEN */
+					0x00000007 /* EMC_AR2PDEN */
+					0x0000000f /* EMC_RW2PDEN */
+					0x00000005 /* EMC_TXSR */
+					0x00000005 /* EMC_TXSRDLL */
+					0x00000004 /* EMC_TCKE */
+					0x00000005 /* EMC_TCKESR */
+					0x00000004 /* EMC_TPD */
+					0x00000000 /* EMC_TFAW */
+					0x00000000 /* EMC_TRPAB */
+					0x00000005 /* EMC_TCLKSTABLE */
+					0x00000005 /* EMC_TCLKSTOP */
+					0x00000064 /* EMC_TREFBW */
+					0x00000000 /* EMC_FBIO_CFG6 */
+					0x00000000 /* EMC_ODT_WRITE */
+					0x00000000 /* EMC_ODT_READ */
+					0x106aa298 /* EMC_FBIO_CFG5 */
+					0x002c00a0 /* EMC_CFG_DIG_DLL */
+					0x00008000 /* EMC_CFG_DIG_DLL_PERIOD */
+					0x00064000 /* EMC_DLL_XFORM_DQS0 */
+					0x00064000 /* EMC_DLL_XFORM_DQS1 */
+					0x00064000 /* EMC_DLL_XFORM_DQS2 */
+					0x00064000 /* EMC_DLL_XFORM_DQS3 */
+					0x00064000 /* EMC_DLL_XFORM_DQS4 */
+					0x00064000 /* EMC_DLL_XFORM_DQS5 */
+					0x00064000 /* EMC_DLL_XFORM_DQS6 */
+					0x00064000 /* EMC_DLL_XFORM_DQS7 */
+					0x00064000 /* EMC_DLL_XFORM_DQS8 */
+					0x00064000 /* EMC_DLL_XFORM_DQS9 */
+					0x00064000 /* EMC_DLL_XFORM_DQS10 */
+					0x00064000 /* EMC_DLL_XFORM_DQS11 */
+					0x00064000 /* EMC_DLL_XFORM_DQS12 */
+					0x00064000 /* EMC_DLL_XFORM_DQS13 */
+					0x00064000 /* EMC_DLL_XFORM_DQS14 */
+					0x00064000 /* EMC_DLL_XFORM_DQS15 */
+					0x00000000 /* EMC_DLL_XFORM_QUSE0 */
+					0x00000000 /* EMC_DLL_XFORM_QUSE1 */
+					0x00000000 /* EMC_DLL_XFORM_QUSE2 */
+					0x00000000 /* EMC_DLL_XFORM_QUSE3 */
+					0x00000000 /* EMC_DLL_XFORM_QUSE4 */
+					0x00000000 /* EMC_DLL_XFORM_QUSE5 */
+					0x00000000 /* EMC_DLL_XFORM_QUSE6 */
+					0x00000000 /* EMC_DLL_XFORM_QUSE7 */
+					0x00000000 /* EMC_DLL_XFORM_ADDR0 */
+					0x00000000 /* EMC_DLL_XFORM_ADDR1 */
+					0x00000000 /* EMC_DLL_XFORM_ADDR2 */
+					0x00000000 /* EMC_DLL_XFORM_ADDR3 */
+					0x00000000 /* EMC_DLL_XFORM_ADDR4 */
+					0x00000000 /* EMC_DLL_XFORM_ADDR5 */
+					0x00000000 /* EMC_DLL_XFORM_QUSE8 */
+					0x00000000 /* EMC_DLL_XFORM_QUSE9 */
+					0x00000000 /* EMC_DLL_XFORM_QUSE10 */
+					0x00000000 /* EMC_DLL_XFORM_QUSE11 */
+					0x00000000 /* EMC_DLL_XFORM_QUSE12 */
+					0x00000000 /* EMC_DLL_XFORM_QUSE13 */
+					0x00000000 /* EMC_DLL_XFORM_QUSE14 */
+					0x00000000 /* EMC_DLL_XFORM_QUSE15 */
+					0x00000000 /* EMC_DLI_TRIM_TXDQS0 */
+					0x00000000 /* EMC_DLI_TRIM_TXDQS1 */
+					0x00000000 /* EMC_DLI_TRIM_TXDQS2 */
+					0x00000000 /* EMC_DLI_TRIM_TXDQS3 */
+					0x00000000 /* EMC_DLI_TRIM_TXDQS4 */
+					0x00000000 /* EMC_DLI_TRIM_TXDQS5 */
+					0x00000000 /* EMC_DLI_TRIM_TXDQS6 */
+					0x00000000 /* EMC_DLI_TRIM_TXDQS7 */
+					0x00000000 /* EMC_DLI_TRIM_TXDQS8 */
+					0x00000000 /* EMC_DLI_TRIM_TXDQS9 */
+					0x00000000 /* EMC_DLI_TRIM_TXDQS10 */
+					0x00000000 /* EMC_DLI_TRIM_TXDQS11 */
+					0x00000000 /* EMC_DLI_TRIM_TXDQS12 */
+					0x00000000 /* EMC_DLI_TRIM_TXDQS13 */
+					0x00000000 /* EMC_DLI_TRIM_TXDQS14 */
+					0x00000000 /* EMC_DLI_TRIM_TXDQS15 */
+					0x000fc000 /* EMC_DLL_XFORM_DQ0 */
+					0x000fc000 /* EMC_DLL_XFORM_DQ1 */
+					0x000fc000 /* EMC_DLL_XFORM_DQ2 */
+					0x000fc000 /* EMC_DLL_XFORM_DQ3 */
+					0x0000fc00 /* EMC_DLL_XFORM_DQ4 */
+					0x0000fc00 /* EMC_DLL_XFORM_DQ5 */
+					0x0000fc00 /* EMC_DLL_XFORM_DQ6 */
+					0x0000fc00 /* EMC_DLL_XFORM_DQ7 */
+					0x10000280 /* EMC_XM2CMDPADCTRL */
+					0x00000000 /* EMC_XM2CMDPADCTRL4 */
+					0x00111111 /* EMC_XM2CMDPADCTRL5 */
+					0x0130b118 /* EMC_XM2DQSPADCTRL2 */
+					0x00000000 /* EMC_XM2DQPADCTRL2 */
+					0x00000000 /* EMC_XM2DQPADCTRL3 */
+					0x77ffc081 /* EMC_XM2CLKPADCTRL */
+					0x00000e0e /* EMC_XM2CLKPADCTRL2 */
+					0x81f1f108 /* EMC_XM2COMPPADCTRL */
+					0x07070004 /* EMC_XM2VTTGENPADCTRL */
+					0x0000003f /* EMC_XM2VTTGENPADCTRL2 */
+					0x016eeeee /* EMC_XM2VTTGENPADCTRL3 */
+					0x51451400 /* EMC_XM2DQSPADCTRL3 */
+					0x00514514 /* EMC_XM2DQSPADCTRL4 */
+					0x00514514 /* EMC_XM2DQSPADCTRL5 */
+					0x51451400 /* EMC_XM2DQSPADCTRL6 */
+					0x0000003f /* EMC_DSR_VTTGEN_DRV */
+					0x00000007 /* EMC_TXDSRVTTGEN */
+					0x00000000 /* EMC_FBIO_SPARE */
+					0x00000000 /* EMC_ZCAL_INTERVAL */
+					0x00000042 /* EMC_ZCAL_WAIT_CNT */
+					0x000e000e /* EMC_MRS_WAIT_CNT */
+					0x000e000e /* EMC_MRS_WAIT_CNT2 */
+					0x00000000 /* EMC_CTT */
+					0x00000003 /* EMC_CTT_DURATION */
+					0x0000f2f3 /* EMC_CFG_PIPE */
+					0x800001c5 /* EMC_DYN_SELF_REF_CONTROL */
+					0x0000000a /* EMC_QPOP */
+				>;
+			};
+		};
+	};
+};
-- 
1.9.3


^ permalink raw reply	[flat|nested] 21+ messages in thread

* [PATCH v6 07/15] of: document external-memory-controller property in tegra124-car
  2015-02-12 14:06 [PATCH v6 00/15] Tegra124 EMC (external memory controller) support Tomeu Vizoso
                   ` (5 preceding siblings ...)
  2015-02-12 14:06 ` [PATCH v6 06/15] of: Add Tegra124 EMC bindings Tomeu Vizoso
@ 2015-02-12 14:06 ` Tomeu Vizoso
  2015-02-12 14:06 ` [PATCH v6 08/15] ARM: tegra: Add EMC to Tegra124 device tree Tomeu Vizoso
                   ` (7 subsequent siblings)
  14 siblings, 0 replies; 21+ messages in thread
From: Tomeu Vizoso @ 2015-02-12 14:06 UTC (permalink / raw)
  To: linux-tegra
  Cc: Javier Martinez Canillas, Mikko Perttunen, Tomeu Vizoso,
	Rob Herring, Pawel Moll, Mark Rutland, Ian Campbell, Kumar Gala,
	Stephen Warren, Thierry Reding, Alexandre Courbot, Paul Walmsley,
	Peter De Schrijver, devicetree, linux-kernel

This property contains a phandle to the EMC driver that is needed by the
EMC clock to request the EMC driver to do its part of the clock change
sequence.

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
---
 Documentation/devicetree/bindings/clock/nvidia,tegra124-car.txt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/clock/nvidia,tegra124-car.txt b/Documentation/devicetree/bindings/clock/nvidia,tegra124-car.txt
index c3891ce..7f02fb4 100644
--- a/Documentation/devicetree/bindings/clock/nvidia,tegra124-car.txt
+++ b/Documentation/devicetree/bindings/clock/nvidia,tegra124-car.txt
@@ -20,6 +20,7 @@ Required properties :
 - #reset-cells : Should be 1.
   In clock consumers, this cell represents the bit number in the CAR's
   array of CLK_RST_CONTROLLER_RST_DEVICES_* registers.
+- nvidia,external-memory-controller : phandle of the EMC driver.
 
 The node should contain a "emc-timings" subnode for each supported RAM type (see
 field RAM_CODE in register PMC_STRAPPING_OPT_A).
@@ -50,6 +51,7 @@ Example SoC include file:
 		reg = <0x60006000 0x1000>;
 		#clock-cells = <1>;
 		#reset-cells = <1>;
+		nvidia,external-memory-controller = <&emc>;
 	};
 
 	usb@c5004000 {
-- 
1.9.3


^ permalink raw reply	[flat|nested] 21+ messages in thread

* [PATCH v6 08/15] ARM: tegra: Add EMC to Tegra124 device tree
  2015-02-12 14:06 [PATCH v6 00/15] Tegra124 EMC (external memory controller) support Tomeu Vizoso
                   ` (6 preceding siblings ...)
  2015-02-12 14:06 ` [PATCH v6 07/15] of: document external-memory-controller property in tegra124-car Tomeu Vizoso
@ 2015-02-12 14:06 ` Tomeu Vizoso
  2015-02-12 14:06 ` [PATCH v6 09/15] ARM: tegra: Add EMC timings to Jetson TK1 " Tomeu Vizoso
                   ` (6 subsequent siblings)
  14 siblings, 0 replies; 21+ messages in thread
From: Tomeu Vizoso @ 2015-02-12 14:06 UTC (permalink / raw)
  To: linux-tegra
  Cc: Javier Martinez Canillas, Mikko Perttunen, Mikko Perttunen,
	Tomeu Vizoso, Rob Herring, Pawel Moll, Mark Rutland,
	Ian Campbell, Kumar Gala, Russell King, Stephen Warren,
	Thierry Reding, Alexandre Courbot, devicetree, linux-arm-kernel,
	linux-kernel

From: Mikko Perttunen <mperttunen@nvidia.com>

This adds a node for the EMC memory controller. It is always enabled, but only
provides read-only functionality without board-specific timing tables.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>

---

v5: Add a phandle to the CAR node that points to the EMC node
---
 arch/arm/boot/dts/tegra124.dtsi | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm/boot/dts/tegra124.dtsi b/arch/arm/boot/dts/tegra124.dtsi
index 4be06c6..0fff4fb 100644
--- a/arch/arm/boot/dts/tegra124.dtsi
+++ b/arch/arm/boot/dts/tegra124.dtsi
@@ -207,6 +207,7 @@
 		reg = <0x0 0x60006000 0x0 0x1000>;
 		#clock-cells = <1>;
 		#reset-cells = <1>;
+		nvidia,external-memory-controller = <&emc>;
 	};
 
 	flow-controller@0,60007000 {
@@ -569,6 +570,13 @@
 		#iommu-cells = <1>;
 	};
 
+	emc: emc@0,7001b000 {
+		compatible = "nvidia,tegra124-emc";
+		reg = <0x0 0x7001b000 0x0 0x1000>;
+
+		nvidia,memory-controller = <&mc>;
+	};
+
 	sata@0,70020000 {
 		compatible = "nvidia,tegra124-ahci";
 
-- 
1.9.3


^ permalink raw reply	[flat|nested] 21+ messages in thread

* [PATCH v6 09/15] ARM: tegra: Add EMC timings to Jetson TK1 device tree
  2015-02-12 14:06 [PATCH v6 00/15] Tegra124 EMC (external memory controller) support Tomeu Vizoso
                   ` (7 preceding siblings ...)
  2015-02-12 14:06 ` [PATCH v6 08/15] ARM: tegra: Add EMC to Tegra124 device tree Tomeu Vizoso
@ 2015-02-12 14:06 ` Tomeu Vizoso
  2015-02-12 14:06 ` [PATCH v6 10/15] memory: tegra: Add API needed by the EMC driver Tomeu Vizoso
                   ` (5 subsequent siblings)
  14 siblings, 0 replies; 21+ messages in thread
From: Tomeu Vizoso @ 2015-02-12 14:06 UTC (permalink / raw)
  To: linux-tegra
  Cc: Javier Martinez Canillas, Mikko Perttunen, Mikko Perttunen,
	Tomeu Vizoso, Rob Herring, Pawel Moll, Mark Rutland,
	Ian Campbell, Kumar Gala, Russell King, Stephen Warren,
	Thierry Reding, Alexandre Courbot, devicetree, linux-arm-kernel,
	linux-kernel

From: Mikko Perttunen <mperttunen@nvidia.com>

This adds a new file, tegra124-jetson-tk1-emc.dtsi that contains
valid timings for the EMC memory clock. The file is included to the
main Jetson TK1 device tree.

The data is generated from the V5.0.17 version of the DVFS tables.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>

---

v5:	* Add emc-xm2dqspadctrl2, emc-zcal-interval and
	  emc-zcal-interval properties
	* Sort register properties alphabetically
	* Update data to V5.0.17 version of the DVFS tables

v4:	* Rename timings subnode to emc-timings
	* Remove unit addresses from timings and timing subnodes

v2:	* Fix the unit addresses of the timings and timing nodes
---
 arch/arm/boot/dts/tegra124-jetson-tk1-emc.dtsi | 2469 ++++++++++++++++++++++++
 arch/arm/boot/dts/tegra124-jetson-tk1.dts      |    2 +
 2 files changed, 2471 insertions(+)
 create mode 100644 arch/arm/boot/dts/tegra124-jetson-tk1-emc.dtsi

diff --git a/arch/arm/boot/dts/tegra124-jetson-tk1-emc.dtsi b/arch/arm/boot/dts/tegra124-jetson-tk1-emc.dtsi
new file mode 100644
index 0000000..abbc7c2
--- /dev/null
+++ b/arch/arm/boot/dts/tegra124-jetson-tk1-emc.dtsi
@@ -0,0 +1,2469 @@
+/ {
+	clock@0,60006000 {
+		emc-timings-3 {
+			nvidia,ram-code = <3>;
+
+			timing-12750000 {
+				clock-frequency = <12750000>;
+				nvidia,parent-clock-frequency = <408000000>;
+				clocks = <&tegra_car TEGRA124_CLK_PLL_P>;
+				clock-names = "emc-parent";
+			};
+			timing-20400000 {
+				clock-frequency = <20400000>;
+				nvidia,parent-clock-frequency = <408000000>;
+				clocks = <&tegra_car TEGRA124_CLK_PLL_P>;
+				clock-names = "emc-parent";
+			};
+			timing-40800000 {
+				clock-frequency = <40800000>;
+				nvidia,parent-clock-frequency = <408000000>;
+				clocks = <&tegra_car TEGRA124_CLK_PLL_P>;
+				clock-names = "emc-parent";
+			};
+			timing-68000000 {
+				clock-frequency = <68000000>;
+				nvidia,parent-clock-frequency = <408000000>;
+				clocks = <&tegra_car TEGRA124_CLK_PLL_P>;
+				clock-names = "emc-parent";
+			};
+			timing-102000000 {
+				clock-frequency = <102000000>;
+				nvidia,parent-clock-frequency = <408000000>;
+				clocks = <&tegra_car TEGRA124_CLK_PLL_P>;
+				clock-names = "emc-parent";
+			};
+			timing-204000000 {
+				clock-frequency = <204000000>;
+				nvidia,parent-clock-frequency = <408000000>;
+				clocks = <&tegra_car TEGRA124_CLK_PLL_P>;
+				clock-names = "emc-parent";
+			};
+			timing-300000000 {
+				clock-frequency = <300000000>;
+				nvidia,parent-clock-frequency = <600000000>;
+				clocks = <&tegra_car TEGRA124_CLK_PLL_C>;
+				clock-names = "emc-parent";
+			};
+			timing-396000000 {
+				clock-frequency = <396000000>;
+				nvidia,parent-clock-frequency = <792000000>;
+				clocks = <&tegra_car TEGRA124_CLK_PLL_M>;
+				clock-names = "emc-parent";
+			};
+			timing-528000000 {
+				clock-frequency = <528000000>;
+				nvidia,parent-clock-frequency = <528000000>;
+				clocks = <&tegra_car TEGRA124_CLK_PLL_M_UD>;
+				clock-names = "emc-parent";
+			};
+			timing-600000000 {
+				clock-frequency = <600000000>;
+				nvidia,parent-clock-frequency = <600000000>;
+				clocks = <&tegra_car TEGRA124_CLK_PLL_C_UD>;
+				clock-names = "emc-parent";
+			};
+			timing-792000000 {
+				clock-frequency = <792000000>;
+				nvidia,parent-clock-frequency = <792000000>;
+				clocks = <&tegra_car TEGRA124_CLK_PLL_M_UD>;
+				clock-names = "emc-parent";
+			};
+			timing-924000000 {
+				clock-frequency = <924000000>;
+				nvidia,parent-clock-frequency = <924000000>;
+				clocks = <&tegra_car TEGRA124_CLK_PLL_M_UD>;
+				clock-names = "emc-parent";
+			};
+		};
+	};
+
+	emc@0,7001b000 {
+		emc-timings-3 {
+			nvidia,ram-code = <3>;
+
+			timing-12750000 {
+				clock-frequency = <12750000>;
+
+				nvidia,emc-auto-cal-config = <0xa1430000>;
+				nvidia,emc-auto-cal-config2 = <0x00000000>;
+				nvidia,emc-auto-cal-config3 = <0x00000000>;
+				nvidia,emc-auto-cal-interval = <0x001fffff>;
+				nvidia,emc-bgbias-ctl0 = <0x00000008>;
+				nvidia,emc-cfg = <0x73240000>;
+				nvidia,emc-cfg-2 = <0x000008c5>;
+				nvidia,emc-cfg-dig-dll = <0x002c0068>;
+				nvidia,emc-ctt-term-ctrl = <0x00000802>;
+				nvidia,emc-mode-1 = <0x80100003>;
+				nvidia,emc-mode-2 = <0x80200008>;
+				nvidia,emc-mode-4 = <0x00000000>;
+				nvidia,emc-mode-reset = <0x80001221>;
+				nvidia,emc-mrs-wait-cnt = <0x000e000e>;
+				nvidia,emc-sel-dpd-ctrl = <0x00040128>;
+				nvidia,emc-xm2dqspadctrl2 = <0x0130b118>;
+				nvidia,emc-zcal-cnt-long = <0x00000042>;
+				nvidia,emc-zcal-interval = <0x00000000>;
+
+				nvidia,emc-configuration = <
+					0x00000000
+					0x00000003
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000004
+					0x0000000a
+					0x00000005
+					0x0000000b
+					0x00000000
+					0x00000000
+					0x00000003
+					0x00000003
+					0x00000000
+					0x00000006
+					0x00000006
+					0x00000006
+					0x00000002
+					0x00000000
+					0x00000005
+					0x00000005
+					0x00010000
+					0x00000003
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000004
+					0x0000000c
+					0x0000000d
+					0x0000000f
+					0x00000060
+					0x00000000
+					0x00000018
+					0x00000002
+					0x00000002
+					0x00000001
+					0x00000000
+					0x00000007
+					0x0000000f
+					0x00000005
+					0x00000005
+					0x00000004
+					0x00000005
+					0x00000004
+					0x00000000
+					0x00000000
+					0x00000005
+					0x00000005
+					0x00000064
+					0x00000000
+					0x00000000
+					0x00000000
+					0x106aa298
+					0x002c00a0
+					0x00008000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x000fc000
+					0x000fc000
+					0x000fc000
+					0x000fc000
+					0x0000fc00
+					0x0000fc00
+					0x0000fc00
+					0x0000fc00
+					0x10000280
+					0x00000000
+					0x00111111
+					0x0130b118
+					0x00000000
+					0x00000000
+					0x77ffc081
+					0x00000e0e
+					0x81f1f108
+					0x07070004
+					0x0000003f
+					0x016eeeee
+					0x51451400
+					0x00514514
+					0x00514514
+					0x51451400
+					0x0000003f
+					0x00000007
+					0x00000000
+					0x00000000
+					0x00000042
+					0x000e000e
+					0x000e000e
+					0x00000000
+					0x00000003
+					0x0000f2f3
+					0x800001c5
+					0x0000000a
+				>;
+			};
+
+			timing-20400000 {
+				clock-frequency = <20400000>;
+
+				nvidia,emc-auto-cal-config = <0xa1430000>;
+				nvidia,emc-auto-cal-config2 = <0x00000000>;
+				nvidia,emc-auto-cal-config3 = <0x00000000>;
+				nvidia,emc-auto-cal-interval = <0x001fffff>;
+				nvidia,emc-bgbias-ctl0 = <0x00000008>;
+				nvidia,emc-cfg = <0x73240000>;
+				nvidia,emc-cfg-2 = <0x000008c5>;
+				nvidia,emc-cfg-dig-dll = <0x002c0068>;
+				nvidia,emc-ctt-term-ctrl = <0x00000802>;
+				nvidia,emc-mode-1 = <0x80100003>;
+				nvidia,emc-mode-2 = <0x80200008>;
+				nvidia,emc-mode-4 = <0x00000000>;
+				nvidia,emc-mode-reset = <0x80001221>;
+				nvidia,emc-mrs-wait-cnt = <0x000e000e>;
+				nvidia,emc-sel-dpd-ctrl = <0x00040128>;
+				nvidia,emc-xm2dqspadctrl2 = <0x0130b118>;
+				nvidia,emc-zcal-cnt-long = <0x00000042>;
+				nvidia,emc-zcal-interval = <0x00000000>;
+
+				nvidia,emc-configuration = <
+					0x00000000
+					0x00000005
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000004
+					0x0000000a
+					0x00000005
+					0x0000000b
+					0x00000000
+					0x00000000
+					0x00000003
+					0x00000003
+					0x00000000
+					0x00000006
+					0x00000006
+					0x00000006
+					0x00000002
+					0x00000000
+					0x00000005
+					0x00000005
+					0x00010000
+					0x00000003
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000004
+					0x0000000c
+					0x0000000d
+					0x0000000f
+					0x0000009a
+					0x00000000
+					0x00000026
+					0x00000002
+					0x00000002
+					0x00000001
+					0x00000000
+					0x00000007
+					0x0000000f
+					0x00000006
+					0x00000006
+					0x00000004
+					0x00000005
+					0x00000004
+					0x00000000
+					0x00000000
+					0x00000005
+					0x00000005
+					0x000000a0
+					0x00000000
+					0x00000000
+					0x00000000
+					0x106aa298
+					0x002c00a0
+					0x00008000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x000fc000
+					0x000fc000
+					0x000fc000
+					0x000fc000
+					0x0000fc00
+					0x0000fc00
+					0x0000fc00
+					0x0000fc00
+					0x10000280
+					0x00000000
+					0x00111111
+					0x0130b118
+					0x00000000
+					0x00000000
+					0x77ffc081
+					0x00000e0e
+					0x81f1f108
+					0x07070004
+					0x0000003f
+					0x016eeeee
+					0x51451400
+					0x00514514
+					0x00514514
+					0x51451400
+					0x0000003f
+					0x0000000b
+					0x00000000
+					0x00000000
+					0x00000042
+					0x000e000e
+					0x000e000e
+					0x00000000
+					0x00000003
+					0x0000f2f3
+					0x8000023a
+					0x0000000a
+				>;
+			};
+
+			timing-40800000 {
+				clock-frequency = <40800000>;
+
+				nvidia,emc-auto-cal-config = <0xa1430000>;
+				nvidia,emc-auto-cal-config2 = <0x00000000>;
+				nvidia,emc-auto-cal-config3 = <0x00000000>;
+				nvidia,emc-auto-cal-interval = <0x001fffff>;
+				nvidia,emc-bgbias-ctl0 = <0x00000008>;
+				nvidia,emc-cfg = <0x73240000>;
+				nvidia,emc-cfg-2 = <0x000008c5>;
+				nvidia,emc-cfg-dig-dll = <0x002c0068>;
+				nvidia,emc-ctt-term-ctrl = <0x00000802>;
+				nvidia,emc-mode-1 = <0x80100003>;
+				nvidia,emc-mode-2 = <0x80200008>;
+				nvidia,emc-mode-4 = <0x00000000>;
+				nvidia,emc-mode-reset = <0x80001221>;
+				nvidia,emc-mrs-wait-cnt = <0x000e000e>;
+				nvidia,emc-sel-dpd-ctrl = <0x00040128>;
+				nvidia,emc-xm2dqspadctrl2 = <0x0130b118>;
+				nvidia,emc-zcal-cnt-long = <0x00000042>;
+				nvidia,emc-zcal-interval = <0x00000000>;
+
+				nvidia,emc-configuration = <
+					0x00000001
+					0x0000000a
+					0x00000000
+					0x00000001
+					0x00000000
+					0x00000004
+					0x0000000a
+					0x00000005
+					0x0000000b
+					0x00000000
+					0x00000000
+					0x00000003
+					0x00000003
+					0x00000000
+					0x00000006
+					0x00000006
+					0x00000006
+					0x00000002
+					0x00000000
+					0x00000005
+					0x00000005
+					0x00010000
+					0x00000003
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000004
+					0x0000000c
+					0x0000000d
+					0x0000000f
+					0x00000134
+					0x00000000
+					0x0000004d
+					0x00000002
+					0x00000002
+					0x00000001
+					0x00000000
+					0x00000008
+					0x0000000f
+					0x0000000c
+					0x0000000c
+					0x00000004
+					0x00000005
+					0x00000004
+					0x00000000
+					0x00000000
+					0x00000005
+					0x00000005
+					0x0000013f
+					0x00000000
+					0x00000000
+					0x00000000
+					0x106aa298
+					0x002c00a0
+					0x00008000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x000fc000
+					0x000fc000
+					0x000fc000
+					0x000fc000
+					0x0000fc00
+					0x0000fc00
+					0x0000fc00
+					0x0000fc00
+					0x10000280
+					0x00000000
+					0x00111111
+					0x0130b118
+					0x00000000
+					0x00000000
+					0x77ffc081
+					0x00000e0e
+					0x81f1f108
+					0x07070004
+					0x0000003f
+					0x016eeeee
+					0x51451400
+					0x00514514
+					0x00514514
+					0x51451400
+					0x0000003f
+					0x00000015
+					0x00000000
+					0x00000000
+					0x00000042
+					0x000e000e
+					0x000e000e
+					0x00000000
+					0x00000003
+					0x0000f2f3
+					0x80000370
+					0x0000000a
+				>;
+			};
+
+			timing-68000000 {
+				clock-frequency = <68000000>;
+
+				nvidia,emc-auto-cal-config = <0xa1430000>;
+				nvidia,emc-auto-cal-config2 = <0x00000000>;
+				nvidia,emc-auto-cal-config3 = <0x00000000>;
+				nvidia,emc-auto-cal-interval = <0x001fffff>;
+				nvidia,emc-bgbias-ctl0 = <0x00000008>;
+				nvidia,emc-cfg = <0x73240000>;
+				nvidia,emc-cfg-2 = <0x000008c5>;
+				nvidia,emc-cfg-dig-dll = <0x002c0068>;
+				nvidia,emc-ctt-term-ctrl = <0x00000802>;
+				nvidia,emc-mode-1 = <0x80100003>;
+				nvidia,emc-mode-2 = <0x80200008>;
+				nvidia,emc-mode-4 = <0x00000000>;
+				nvidia,emc-mode-reset = <0x80001221>;
+				nvidia,emc-mrs-wait-cnt = <0x000e000e>;
+				nvidia,emc-sel-dpd-ctrl = <0x00040128>;
+				nvidia,emc-xm2dqspadctrl2 = <0x0130b118>;
+				nvidia,emc-zcal-cnt-long = <0x00000042>;
+				nvidia,emc-zcal-interval = <0x00000000>;
+
+				nvidia,emc-configuration = <
+					0x00000003
+					0x00000011
+					0x00000000
+					0x00000002
+					0x00000000
+					0x00000004
+					0x0000000a
+					0x00000005
+					0x0000000b
+					0x00000000
+					0x00000000
+					0x00000003
+					0x00000003
+					0x00000000
+					0x00000006
+					0x00000006
+					0x00000006
+					0x00000002
+					0x00000000
+					0x00000005
+					0x00000005
+					0x00010000
+					0x00000003
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000004
+					0x0000000c
+					0x0000000d
+					0x0000000f
+					0x00000202
+					0x00000000
+					0x00000080
+					0x00000002
+					0x00000002
+					0x00000001
+					0x00000000
+					0x0000000f
+					0x0000000f
+					0x00000013
+					0x00000013
+					0x00000004
+					0x00000005
+					0x00000004
+					0x00000001
+					0x00000000
+					0x00000005
+					0x00000005
+					0x00000213
+					0x00000000
+					0x00000000
+					0x00000000
+					0x106aa298
+					0x002c00a0
+					0x00008000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x000fc000
+					0x000fc000
+					0x000fc000
+					0x000fc000
+					0x0000fc00
+					0x0000fc00
+					0x0000fc00
+					0x0000fc00
+					0x10000280
+					0x00000000
+					0x00111111
+					0x0130b118
+					0x00000000
+					0x00000000
+					0x77ffc081
+					0x00000e0e
+					0x81f1f108
+					0x07070004
+					0x0000003f
+					0x016eeeee
+					0x51451400
+					0x00514514
+					0x00514514
+					0x51451400
+					0x0000003f
+					0x00000022
+					0x00000000
+					0x00000000
+					0x00000042
+					0x000e000e
+					0x000e000e
+					0x00000000
+					0x00000003
+					0x0000f2f3
+					0x8000050e
+					0x0000000a
+				>;
+			};
+
+			timing-102000000 {
+				clock-frequency = <102000000>;
+
+				nvidia,emc-auto-cal-config = <0xa1430000>;
+				nvidia,emc-auto-cal-config2 = <0x00000000>;
+				nvidia,emc-auto-cal-config3 = <0x00000000>;
+				nvidia,emc-auto-cal-interval = <0x001fffff>;
+				nvidia,emc-bgbias-ctl0 = <0x00000008>;
+				nvidia,emc-cfg = <0x73240000>;
+				nvidia,emc-cfg-2 = <0x000008c5>;
+				nvidia,emc-cfg-dig-dll = <0x002c0068>;
+				nvidia,emc-ctt-term-ctrl = <0x00000802>;
+				nvidia,emc-mode-1 = <0x80100003>;
+				nvidia,emc-mode-2 = <0x80200008>;
+				nvidia,emc-mode-4 = <0x00000000>;
+				nvidia,emc-mode-reset = <0x80001221>;
+				nvidia,emc-mrs-wait-cnt = <0x000e000e>;
+				nvidia,emc-sel-dpd-ctrl = <0x00040128>;
+				nvidia,emc-xm2dqspadctrl2 = <0x0130b118>;
+				nvidia,emc-zcal-cnt-long = <0x00000042>;
+				nvidia,emc-zcal-interval = <0x00000000>;
+
+				nvidia,emc-configuration = <
+					0x00000004
+					0x0000001a
+					0x00000000
+					0x00000003
+					0x00000001
+					0x00000004
+					0x0000000a
+					0x00000005
+					0x0000000b
+					0x00000001
+					0x00000001
+					0x00000003
+					0x00000003
+					0x00000000
+					0x00000006
+					0x00000006
+					0x00000006
+					0x00000002
+					0x00000000
+					0x00000005
+					0x00000005
+					0x00010000
+					0x00000003
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000004
+					0x0000000c
+					0x0000000d
+					0x0000000f
+					0x00000304
+					0x00000000
+					0x000000c1
+					0x00000002
+					0x00000002
+					0x00000001
+					0x00000000
+					0x00000018
+					0x0000000f
+					0x0000001c
+					0x0000001c
+					0x00000004
+					0x00000005
+					0x00000004
+					0x00000002
+					0x00000000
+					0x00000005
+					0x00000005
+					0x0000031c
+					0x00000000
+					0x00000000
+					0x00000000
+					0x106aa298
+					0x002c00a0
+					0x00008000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x000fc000
+					0x000fc000
+					0x000fc000
+					0x000fc000
+					0x0000fc00
+					0x0000fc00
+					0x0000fc00
+					0x0000fc00
+					0x10000280
+					0x00000000
+					0x00111111
+					0x0130b118
+					0x00000000
+					0x00000000
+					0x77ffc081
+					0x00000e0e
+					0x81f1f108
+					0x07070004
+					0x0000003f
+					0x016eeeee
+					0x51451400
+					0x00514514
+					0x00514514
+					0x51451400
+					0x0000003f
+					0x00000033
+					0x00000000
+					0x00000000
+					0x00000042
+					0x000e000e
+					0x000e000e
+					0x00000000
+					0x00000003
+					0x0000f2f3
+					0x80000713
+					0x0000000a
+				>;
+			};
+
+			timing-204000000 {
+				clock-frequency = <204000000>;
+
+				nvidia,emc-auto-cal-config = <0xa1430000>;
+				nvidia,emc-auto-cal-config2 = <0x00000000>;
+				nvidia,emc-auto-cal-config3 = <0x00000000>;
+				nvidia,emc-auto-cal-interval = <0x001fffff>;
+				nvidia,emc-bgbias-ctl0 = <0x00000008>;
+				nvidia,emc-cfg = <0x73240000>;
+				nvidia,emc-cfg-2 = <0x000008cd>;
+				nvidia,emc-cfg-dig-dll = <0x002c0068>;
+				nvidia,emc-ctt-term-ctrl = <0x00000802>;
+				nvidia,emc-mode-1 = <0x80100003>;
+				nvidia,emc-mode-2 = <0x80200008>;
+				nvidia,emc-mode-4 = <0x00000000>;
+				nvidia,emc-mode-reset = <0x80001221>;
+				nvidia,emc-mrs-wait-cnt = <0x000e000e>;
+				nvidia,emc-sel-dpd-ctrl = <0x00040128>;
+				nvidia,emc-xm2dqspadctrl2 = <0x0130b118>;
+				nvidia,emc-zcal-cnt-long = <0x00000042>;
+				nvidia,emc-zcal-interval = <0x00020000>;
+
+				nvidia,emc-configuration = <
+					0x00000009
+					0x00000035
+					0x00000000
+					0x00000006
+					0x00000002
+					0x00000005
+					0x0000000a
+					0x00000005
+					0x0000000b
+					0x00000002
+					0x00000002
+					0x00000003
+					0x00000003
+					0x00000000
+					0x00000005
+					0x00000005
+					0x00000006
+					0x00000002
+					0x00000000
+					0x00000004
+					0x00000006
+					0x00010000
+					0x00000003
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000003
+					0x0000000d
+					0x0000000f
+					0x00000011
+					0x00000607
+					0x00000000
+					0x00000181
+					0x00000002
+					0x00000002
+					0x00000001
+					0x00000000
+					0x00000032
+					0x0000000f
+					0x00000038
+					0x00000038
+					0x00000004
+					0x00000005
+					0x00000004
+					0x00000006
+					0x00000000
+					0x00000005
+					0x00000005
+					0x00000638
+					0x00000000
+					0x00000000
+					0x00000000
+					0x106aa298
+					0x002c00a0
+					0x00008000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00080000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00008000
+					0x00000000
+					0x00000000
+					0x00008000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00090000
+					0x00090000
+					0x00090000
+					0x00090000
+					0x00009000
+					0x00009000
+					0x00009000
+					0x00009000
+					0x10000280
+					0x00000000
+					0x00111111
+					0x0130b118
+					0x00000000
+					0x00000000
+					0x77ffc081
+					0x00000707
+					0x81f1f108
+					0x07070004
+					0x0000003f
+					0x016eeeee
+					0x51451400
+					0x00514514
+					0x00514514
+					0x51451400
+					0x0000003f
+					0x00000066
+					0x00000000
+					0x00020000
+					0x00000100
+					0x000e000e
+					0x000e000e
+					0x00000000
+					0x00000003
+					0x0000d2b3
+					0x80000d22
+					0x0000000a
+				>;
+			};
+
+			timing-300000000 {
+				clock-frequency = <300000000>;
+
+				nvidia,emc-auto-cal-config = <0xa1430000>;
+				nvidia,emc-auto-cal-config2 = <0x00000000>;
+				nvidia,emc-auto-cal-config3 = <0x00000000>;
+				nvidia,emc-auto-cal-interval = <0x001fffff>;
+				nvidia,emc-bgbias-ctl0 = <0x00000000>;
+				nvidia,emc-cfg = <0x73340000>;
+				nvidia,emc-cfg-2 = <0x000008d5>;
+				nvidia,emc-cfg-dig-dll = <0x002c0068>;
+				nvidia,emc-ctt-term-ctrl = <0x00000802>;
+				nvidia,emc-mode-1 = <0x80100002>;
+				nvidia,emc-mode-2 = <0x80200000>;
+				nvidia,emc-mode-4 = <0x00000000>;
+				nvidia,emc-mode-reset = <0x80000321>;
+				nvidia,emc-mrs-wait-cnt = <0x0173000e>;
+				nvidia,emc-sel-dpd-ctrl = <0x00040128>;
+				nvidia,emc-xm2dqspadctrl2 = <0x01231339>;
+				nvidia,emc-zcal-cnt-long = <0x00000042>;
+				nvidia,emc-zcal-interval = <0x00020000>;
+
+				nvidia,emc-configuration = <
+					0x0000000d
+					0x0000004d
+					0x00000000
+					0x00000009
+					0x00000003
+					0x00000004
+					0x00000008
+					0x00000002
+					0x00000009
+					0x00000003
+					0x00000003
+					0x00000002
+					0x00000002
+					0x00000000
+					0x00000003
+					0x00000003
+					0x00000005
+					0x00000002
+					0x00000000
+					0x00000002
+					0x00000007
+					0x00020000
+					0x00000003
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000001
+					0x0000000e
+					0x00000010
+					0x00000012
+					0x000008e4
+					0x00000000
+					0x00000239
+					0x00000001
+					0x00000008
+					0x00000001
+					0x00000000
+					0x0000004b
+					0x0000000e
+					0x00000052
+					0x00000200
+					0x00000004
+					0x00000005
+					0x00000004
+					0x00000008
+					0x00000000
+					0x00000005
+					0x00000005
+					0x00000924
+					0x00000000
+					0x00000000
+					0x00000000
+					0x104ab098
+					0x002c00a0
+					0x00008000
+					0x00030000
+					0x00030000
+					0x00030000
+					0x00030000
+					0x00030000
+					0x00030000
+					0x00030000
+					0x00030000
+					0x00030000
+					0x00030000
+					0x00030000
+					0x00030000
+					0x00030000
+					0x00030000
+					0x00030000
+					0x00030000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00098000
+					0x00098000
+					0x00000000
+					0x00098000
+					0x00098000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00050000
+					0x00050000
+					0x00050000
+					0x00050000
+					0x00005000
+					0x00005000
+					0x00005000
+					0x00005000
+					0x10000280
+					0x00000000
+					0x00111111
+					0x01231339
+					0x00000000
+					0x00000000
+					0x77ffc081
+					0x00000505
+					0x81f1f108
+					0x07070004
+					0x00000000
+					0x016eeeee
+					0x51451420
+					0x00514514
+					0x00514514
+					0x51451400
+					0x0000003f
+					0x00000096
+					0x00000000
+					0x00020000
+					0x00000100
+					0x0173000e
+					0x0173000e
+					0x00000000
+					0x00000003
+					0x000052a3
+					0x800012d7
+					0x00000009
+				>;
+			};
+
+			timing-396000000 {
+				clock-frequency = <396000000>;
+
+				nvidia,emc-auto-cal-config = <0xa1430000>;
+				nvidia,emc-auto-cal-config2 = <0x00000000>;
+				nvidia,emc-auto-cal-config3 = <0x00000000>;
+				nvidia,emc-auto-cal-interval = <0x001fffff>;
+				nvidia,emc-bgbias-ctl0 = <0x00000000>;
+				nvidia,emc-cfg = <0x73340000>;
+				nvidia,emc-cfg-2 = <0x00000895>;
+				nvidia,emc-cfg-dig-dll = <0x002c0068>;
+				nvidia,emc-ctt-term-ctrl = <0x00000802>;
+				nvidia,emc-mode-1 = <0x80100002>;
+				nvidia,emc-mode-2 = <0x80200000>;
+				nvidia,emc-mode-4 = <0x00000000>;
+				nvidia,emc-mode-reset = <0x80000521>;
+				nvidia,emc-mrs-wait-cnt = <0x015b000e>;
+				nvidia,emc-sel-dpd-ctrl = <0x00040008>;
+				nvidia,emc-xm2dqspadctrl2 = <0x01231339>;
+				nvidia,emc-zcal-cnt-long = <0x00000042>;
+				nvidia,emc-zcal-interval = <0x00020000>;
+
+				nvidia,emc-configuration = <
+					0x00000011
+					0x00000066
+					0x00000000
+					0x0000000c
+					0x00000004
+					0x00000004
+					0x00000008
+					0x00000002
+					0x0000000a
+					0x00000004
+					0x00000004
+					0x00000002
+					0x00000002
+					0x00000000
+					0x00000003
+					0x00000003
+					0x00000005
+					0x00000002
+					0x00000000
+					0x00000001
+					0x00000008
+					0x00020000
+					0x00000003
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x0000000f
+					0x00000010
+					0x00000012
+					0x00000bd1
+					0x00000000
+					0x000002f4
+					0x00000001
+					0x00000008
+					0x00000001
+					0x00000000
+					0x00000063
+					0x0000000f
+					0x0000006c
+					0x00000200
+					0x00000004
+					0x00000005
+					0x00000004
+					0x0000000b
+					0x00000000
+					0x00000005
+					0x00000005
+					0x00000c11
+					0x00000000
+					0x00000000
+					0x00000000
+					0x104ab098
+					0x002c00a0
+					0x00008000
+					0x00030000
+					0x00030000
+					0x00030000
+					0x00030000
+					0x00030000
+					0x00030000
+					0x00030000
+					0x00030000
+					0x00030000
+					0x00030000
+					0x00030000
+					0x00030000
+					0x00030000
+					0x00030000
+					0x00030000
+					0x00030000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00070000
+					0x00070000
+					0x00000000
+					0x00070000
+					0x00070000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00038000
+					0x00038000
+					0x00038000
+					0x00038000
+					0x00003800
+					0x00003800
+					0x00003800
+					0x00003800
+					0x10000280
+					0x00000000
+					0x00111111
+					0x01231339
+					0x00000000
+					0x00000000
+					0x77ffc081
+					0x00000505
+					0x81f1f108
+					0x07070004
+					0x00000000
+					0x016eeeee
+					0x51451420
+					0x00514514
+					0x00514514
+					0x51451400
+					0x0000003f
+					0x000000c6
+					0x00000000
+					0x00020000
+					0x00000100
+					0x015b000e
+					0x015b000e
+					0x00000000
+					0x00000003
+					0x000052a3
+					0x8000188b
+					0x00000009
+				>;
+			};
+
+			timing-528000000 {
+				clock-frequency = <528000000>;
+
+				nvidia,emc-auto-cal-config = <0xa1430000>;
+				nvidia,emc-auto-cal-config2 = <0x00000000>;
+				nvidia,emc-auto-cal-config3 = <0x00000000>;
+				nvidia,emc-auto-cal-interval = <0x001fffff>;
+				nvidia,emc-bgbias-ctl0 = <0x00000000>;
+				nvidia,emc-cfg = <0x73300000>;
+				nvidia,emc-cfg-2 = <0x0000089d>;
+				nvidia,emc-cfg-dig-dll = <0xe0120069>;
+				nvidia,emc-ctt-term-ctrl = <0x00000802>;
+				nvidia,emc-mode-1 = <0x80100002>;
+				nvidia,emc-mode-2 = <0x80200008>;
+				nvidia,emc-mode-4 = <0x00000000>;
+				nvidia,emc-mode-reset = <0x80000941>;
+				nvidia,emc-mrs-wait-cnt = <0x0139000e>;
+				nvidia,emc-sel-dpd-ctrl = <0x00040008>;
+				nvidia,emc-xm2dqspadctrl2 = <0x0123133d>;
+				nvidia,emc-zcal-cnt-long = <0x00000042>;
+				nvidia,emc-zcal-interval = <0x00020000>;
+
+				nvidia,emc-configuration = <
+					0x00000018
+					0x00000088
+					0x00000000
+					0x00000010
+					0x00000006
+					0x00000006
+					0x00000009
+					0x00000002
+					0x0000000d
+					0x00000006
+					0x00000006
+					0x00000002
+					0x00000002
+					0x00000000
+					0x00000003
+					0x00000003
+					0x00000006
+					0x00000002
+					0x00000000
+					0x00000001
+					0x00000009
+					0x00030000
+					0x00000003
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000010
+					0x00000012
+					0x00000014
+					0x00000fd6
+					0x00000000
+					0x000003f5
+					0x00000002
+					0x0000000b
+					0x00000001
+					0x00000000
+					0x00000085
+					0x00000012
+					0x00000090
+					0x00000200
+					0x00000004
+					0x00000005
+					0x00000004
+					0x00000010
+					0x00000000
+					0x00000006
+					0x00000006
+					0x00001017
+					0x00000000
+					0x00000000
+					0x00000000
+					0x104ab098
+					0xe01200b1
+					0x00008000
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00054000
+					0x00054000
+					0x00000000
+					0x00054000
+					0x00054000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x0000000c
+					0x0000000c
+					0x0000000c
+					0x0000000c
+					0x0000000c
+					0x0000000c
+					0x0000000c
+					0x0000000c
+					0x100002a0
+					0x00000000
+					0x00111111
+					0x0123133d
+					0x00000000
+					0x00000000
+					0x77ffc085
+					0x00000505
+					0x81f1f108
+					0x07070004
+					0x00000000
+					0x016eeeee
+					0x51451420
+					0x00514514
+					0x00514514
+					0x51451400
+					0x0606003f
+					0x00000000
+					0x00000000
+					0x00020000
+					0x00000100
+					0x0139000e
+					0x0139000e
+					0x00000000
+					0x00000003
+					0x000042a0
+					0x80002062
+					0x0000000a
+				>;
+			};
+
+			timing-600000000 {
+				clock-frequency = <600000000>;
+
+				nvidia,emc-auto-cal-config = <0xa1430000>;
+				nvidia,emc-auto-cal-config2 = <0x00000000>;
+				nvidia,emc-auto-cal-config3 = <0x00000000>;
+				nvidia,emc-auto-cal-interval = <0x001fffff>;
+				nvidia,emc-bgbias-ctl0 = <0x00000000>;
+				nvidia,emc-cfg = <0x73300000>;
+				nvidia,emc-cfg-2 = <0x0000089d>;
+				nvidia,emc-cfg-dig-dll = <0xe00e0069>;
+				nvidia,emc-ctt-term-ctrl = <0x00000802>;
+				nvidia,emc-mode-1 = <0x80100002>;
+				nvidia,emc-mode-2 = <0x80200010>;
+				nvidia,emc-mode-4 = <0x00000000>;
+				nvidia,emc-mode-reset = <0x80000b61>;
+				nvidia,emc-mrs-wait-cnt = <0x0127000e>;
+				nvidia,emc-sel-dpd-ctrl = <0x00040008>;
+				nvidia,emc-xm2dqspadctrl2 = <0x0121113d>;
+				nvidia,emc-zcal-cnt-long = <0x00000042>;
+				nvidia,emc-zcal-interval = <0x00020000>;
+
+				nvidia,emc-configuration = <
+					0x0000001b
+					0x0000009b
+					0x00000000
+					0x00000013
+					0x00000007
+					0x00000007
+					0x0000000b
+					0x00000003
+					0x00000010
+					0x00000007
+					0x00000007
+					0x00000002
+					0x00000002
+					0x00000000
+					0x00000005
+					0x00000005
+					0x0000000a
+					0x00000002
+					0x00000000
+					0x00000003
+					0x0000000b
+					0x00070000
+					0x00000003
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000002
+					0x00000012
+					0x00000016
+					0x00000018
+					0x00001208
+					0x00000000
+					0x00000482
+					0x00000002
+					0x0000000d
+					0x00000001
+					0x00000000
+					0x00000097
+					0x00000015
+					0x000000a3
+					0x00000200
+					0x00000004
+					0x00000005
+					0x00000004
+					0x00000013
+					0x00000000
+					0x00000006
+					0x00000006
+					0x00001248
+					0x00000000
+					0x00000000
+					0x00000000
+					0x104ab098
+					0xe00e00b1
+					0x00008000
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00048000
+					0x00048000
+					0x00000000
+					0x00048000
+					0x00048000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x0000000d
+					0x0000000d
+					0x0000000d
+					0x0000000d
+					0x0000000d
+					0x0000000d
+					0x0000000d
+					0x0000000d
+					0x100002a0
+					0x00000000
+					0x00111111
+					0x0121113d
+					0x00000000
+					0x00000000
+					0x77ffc085
+					0x00000505
+					0x81f1f108
+					0x07070004
+					0x00000000
+					0x016eeeee
+					0x51451420
+					0x00514514
+					0x00514514
+					0x51451400
+					0x0606003f
+					0x00000000
+					0x00000000
+					0x00020000
+					0x00000100
+					0x0127000e
+					0x0127000e
+					0x00000000
+					0x00000003
+					0x000040a0
+					0x800024aa
+					0x0000000e
+				>;
+			};
+
+			timing-792000000 {
+				clock-frequency = <792000000>;
+
+				nvidia,emc-auto-cal-config = <0xa1430000>;
+				nvidia,emc-auto-cal-config2 = <0x00000000>;
+				nvidia,emc-auto-cal-config3 = <0x00000000>;
+				nvidia,emc-auto-cal-interval = <0x001fffff>;
+				nvidia,emc-bgbias-ctl0 = <0x00000000>;
+				nvidia,emc-cfg = <0x73300000>;
+				nvidia,emc-cfg-2 = <0x0000089d>;
+				nvidia,emc-cfg-dig-dll = <0xe0070069>;
+				nvidia,emc-ctt-term-ctrl = <0x00000802>;
+				nvidia,emc-mode-1 = <0x80100002>;
+				nvidia,emc-mode-2 = <0x80200018>;
+				nvidia,emc-mode-4 = <0x00000000>;
+				nvidia,emc-mode-reset = <0x80000d71>;
+				nvidia,emc-mrs-wait-cnt = <0x00f7000e>;
+				nvidia,emc-sel-dpd-ctrl = <0x00040000>;
+				nvidia,emc-xm2dqspadctrl2 = <0x0120113d>;
+				nvidia,emc-zcal-cnt-long = <0x00000042>;
+				nvidia,emc-zcal-interval = <0x00020000>;
+
+				nvidia,emc-configuration = <
+					0x00000024
+					0x000000cd
+					0x00000000
+					0x00000019
+					0x0000000a
+					0x00000008
+					0x0000000d
+					0x00000004
+					0x00000013
+					0x0000000a
+					0x0000000a
+					0x00000004
+					0x00000002
+					0x00000000
+					0x00000006
+					0x00000006
+					0x0000000b
+					0x00000002
+					0x00000000
+					0x00000002
+					0x0000000d
+					0x00080000
+					0x00000004
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000001
+					0x00000014
+					0x00000018
+					0x0000001a
+					0x000017e2
+					0x00000000
+					0x000005f8
+					0x00000003
+					0x00000011
+					0x00000001
+					0x00000000
+					0x000000c7
+					0x00000018
+					0x000000d7
+					0x00000200
+					0x00000005
+					0x00000006
+					0x00000005
+					0x00000019
+					0x00000000
+					0x00000008
+					0x00000008
+					0x00001822
+					0x00000000
+					0x00000000
+					0x00000000
+					0x104ab098
+					0xe00700b1
+					0x00008000
+					0x007fc008
+					0x007fc008
+					0x007fc008
+					0x007fc008
+					0x007fc008
+					0x007fc008
+					0x007fc008
+					0x007fc008
+					0x007fc008
+					0x007fc008
+					0x007fc008
+					0x007fc008
+					0x007fc008
+					0x007fc008
+					0x007fc008
+					0x007fc008
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00034000
+					0x00034000
+					0x00000000
+					0x00034000
+					0x00034000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000005
+					0x00000005
+					0x00000005
+					0x00000005
+					0x00000005
+					0x00000005
+					0x00000005
+					0x00000005
+					0x00000005
+					0x00000005
+					0x00000005
+					0x00000005
+					0x00000005
+					0x00000005
+					0x00000005
+					0x00000005
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x0000000a
+					0x100002a0
+					0x00000000
+					0x00111111
+					0x0120113d
+					0x00000000
+					0x00000000
+					0x77ffc085
+					0x00000000
+					0x81f1f108
+					0x07070004
+					0x00000000
+					0x016eeeee
+					0x61861820
+					0x00514514
+					0x00514514
+					0x61861800
+					0x0606003f
+					0x00000000
+					0x00000000
+					0x00020000
+					0x00000100
+					0x00f7000e
+					0x00f7000e
+					0x00000000
+					0x00000004
+					0x00004080
+					0x80003012
+					0x0000000f
+				>;
+			};
+
+			timing-924000000 {
+				clock-frequency = <924000000>;
+
+				nvidia,emc-auto-cal-config = <0xa1430303>;
+				nvidia,emc-auto-cal-config2 = <0x00000000>;
+				nvidia,emc-auto-cal-config3 = <0x00000000>;
+				nvidia,emc-auto-cal-interval = <0x001fffff>;
+				nvidia,emc-bgbias-ctl0 = <0x00000000>;
+				nvidia,emc-cfg = <0x73300000>;
+				nvidia,emc-cfg-2 = <0x0000089d>;
+				nvidia,emc-cfg-dig-dll = <0xe0040069>;
+				nvidia,emc-ctt-term-ctrl = <0x00000802>;
+				nvidia,emc-mode-1 = <0x80100002>;
+				nvidia,emc-mode-2 = <0x80200020>;
+				nvidia,emc-mode-4 = <0x00000000>;
+				nvidia,emc-mode-reset = <0x80000f15>;
+				nvidia,emc-mrs-wait-cnt = <0x00cd000e>;
+				nvidia,emc-sel-dpd-ctrl = <0x00040000>;
+				nvidia,emc-xm2dqspadctrl2 = <0x0120113d>;
+				nvidia,emc-zcal-cnt-long = <0x0000004c>;
+				nvidia,emc-zcal-interval = <0x00020000>;
+
+				nvidia,emc-configuration = <
+					0x0000002b
+					0x000000f0
+					0x00000000
+					0x0000001e
+					0x0000000b
+					0x00000009
+					0x0000000f
+					0x00000005
+					0x00000016
+					0x0000000b
+					0x0000000b
+					0x00000004
+					0x00000002
+					0x00000000
+					0x00000007
+					0x00000007
+					0x0000000d
+					0x00000002
+					0x00000000
+					0x00000002
+					0x0000000f
+					0x000a0000
+					0x00000004
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000001
+					0x00000016
+					0x0000001a
+					0x0000001c
+					0x00001be7
+					0x00000000
+					0x000006f9
+					0x00000004
+					0x00000015
+					0x00000001
+					0x00000000
+					0x000000e7
+					0x0000001b
+					0x000000fb
+					0x00000200
+					0x00000006
+					0x00000007
+					0x00000006
+					0x0000001e
+					0x00000000
+					0x0000000a
+					0x0000000a
+					0x00001c28
+					0x00000000
+					0x00000000
+					0x00000000
+					0x104ab898
+					0xe00400b1
+					0x00008000
+					0x007f800a
+					0x007f800a
+					0x007f800a
+					0x007f800a
+					0x007f800a
+					0x007f800a
+					0x007f800a
+					0x007f800a
+					0x007f800a
+					0x007f800a
+					0x007f800a
+					0x007f800a
+					0x007f800a
+					0x007f800a
+					0x007f800a
+					0x007f800a
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x0002c000
+					0x0002c000
+					0x00000000
+					0x0002c000
+					0x0002c000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000000
+					0x00000004
+					0x00000004
+					0x00000004
+					0x00000004
+					0x00000004
+					0x00000004
+					0x00000004
+					0x00000004
+					0x00000004
+					0x00000004
+					0x00000004
+					0x00000004
+					0x00000004
+					0x00000004
+					0x00000004
+					0x00000004
+					0x00000008
+					0x00000008
+					0x00000008
+					0x00000008
+					0x00000008
+					0x00000008
+					0x00000008
+					0x00000008
+					0x100002a0
+					0x00000000
+					0x00111111
+					0x0120113d
+					0x00000000
+					0x00000000
+					0x77ffc085
+					0x00000000
+					0x81f1f108
+					0x07070004
+					0x00000000
+					0x016eeeee
+					0x5d75d720
+					0x00514514
+					0x00514514
+					0x5d75d700
+					0x0606003f
+					0x00000000
+					0x00000000
+					0x00020000
+					0x00000128
+					0x00cd000e
+					0x00cd000e
+					0x00000000
+					0x00000004
+					0x00004080
+					0x800037ea
+					0x00000011
+				>;
+			};
+
+		};
+	};
+
+	memory-controller@0,70019000 {
+		emc-timings-3 {
+			nvidia,ram-code = <3>;
+
+			timing-12750000 {
+				clock-frequency = <12750000>;
+
+				nvidia,emem-configuration = <
+					0x40040001
+					0x8000000a
+					0x00000001
+					0x00000001
+					0x00000002
+					0x00000000
+					0x00000002
+					0x00000001
+					0x00000003
+					0x00000008
+					0x00000003
+					0x00000002
+					0x00000003
+					0x00000006
+					0x06030203
+					0x000a0502
+					0x77e30303
+					0x70000f03
+					0x001f0000
+				>;
+			};
+
+			timing-20400000 {
+				clock-frequency = <20400000>;
+
+				nvidia,emem-configuration = <
+					0x40020001
+					0x80000012
+					0x00000001
+					0x00000001
+					0x00000002
+					0x00000000
+					0x00000002
+					0x00000001
+					0x00000003
+					0x00000008
+					0x00000003
+					0x00000002
+					0x00000003
+					0x00000006
+					0x06030203
+					0x000a0502
+					0x76230303
+					0x70000f03
+					0x001f0000
+				>;
+			};
+
+			timing-40800000 {
+				clock-frequency = <40800000>;
+
+				nvidia,emem-configuration = <
+					0xa0000001
+					0x80000017
+					0x00000001
+					0x00000001
+					0x00000002
+					0x00000000
+					0x00000002
+					0x00000001
+					0x00000003
+					0x00000008
+					0x00000003
+					0x00000002
+					0x00000003
+					0x00000006
+					0x06030203
+					0x000a0502
+					0x74a30303
+					0x70000f03
+					0x001f0000
+				>;
+			};
+
+			timing-68000000 {
+				clock-frequency = <68000000>;
+
+				nvidia,emem-configuration = <
+					0x00000001
+					0x8000001e
+					0x00000001
+					0x00000001
+					0x00000002
+					0x00000000
+					0x00000002
+					0x00000001
+					0x00000003
+					0x00000008
+					0x00000003
+					0x00000002
+					0x00000003
+					0x00000006
+					0x06030203
+					0x000a0502
+					0x74230403
+					0x70000f03
+					0x001f0000
+				>;
+			};
+
+			timing-102000000 {
+				clock-frequency = <102000000>;
+
+				nvidia,emem-configuration = <
+					0x08000001
+					0x80000026
+					0x00000001
+					0x00000001
+					0x00000003
+					0x00000000
+					0x00000002
+					0x00000001
+					0x00000003
+					0x00000008
+					0x00000003
+					0x00000002
+					0x00000003
+					0x00000006
+					0x06030203
+					0x000a0503
+					0x73c30504
+					0x70000f03
+					0x001f0000
+				>;
+			};
+
+			timing-204000000 {
+				clock-frequency = <204000000>;
+
+				nvidia,emem-configuration = <
+					0x01000003
+					0x80000040
+					0x00000001
+					0x00000001
+					0x00000004
+					0x00000002
+					0x00000003
+					0x00000001
+					0x00000003
+					0x00000008
+					0x00000003
+					0x00000002
+					0x00000004
+					0x00000006
+					0x06040203
+					0x000a0504
+					0x73840a05
+					0x70000f03
+					0x001f0000
+				>;
+			};
+
+			timing-300000000 {
+				clock-frequency = <300000000>;
+
+				nvidia,emem-configuration = <
+					0x08000004
+					0x80000040
+					0x00000001
+					0x00000002
+					0x00000007
+					0x00000004
+					0x00000004
+					0x00000001
+					0x00000002
+					0x00000007
+					0x00000002
+					0x00000002
+					0x00000004
+					0x00000006
+					0x06040202
+					0x000b0607
+					0x77450e08
+					0x70000f03
+					0x001f0000
+				>;
+			};
+
+			timing-396000000 {
+				clock-frequency = <396000000>;
+
+				nvidia,emem-configuration = <
+					0x0f000005
+					0x80000040
+					0x00000001
+					0x00000002
+					0x00000009
+					0x00000005
+					0x00000006
+					0x00000001
+					0x00000002
+					0x00000008
+					0x00000002
+					0x00000002
+					0x00000004
+					0x00000006
+					0x06040202
+					0x000d0709
+					0x7586120a
+					0x70000f03
+					0x001f0000
+				>;
+			};
+
+			timing-528000000 {
+				clock-frequency = <528000000>;
+
+				nvidia,emem-configuration = <
+					0x0f000007
+					0x80000040
+					0x00000002
+					0x00000003
+					0x0000000c
+					0x00000007
+					0x00000008
+					0x00000001
+					0x00000002
+					0x00000009
+					0x00000002
+					0x00000002
+					0x00000005
+					0x00000006
+					0x06050202
+					0x0010090c
+					0x7428180d
+					0x70000f03
+					0x001f0000
+				>;
+			};
+
+			timing-600000000 {
+				clock-frequency = <600000000>;
+
+				nvidia,emem-configuration = <
+					0x00000009
+					0x80000040
+					0x00000003
+					0x00000004
+					0x0000000e
+					0x00000009
+					0x0000000a
+					0x00000001
+					0x00000003
+					0x0000000b
+					0x00000002
+					0x00000002
+					0x00000005
+					0x00000007
+					0x07050202
+					0x00130b0e
+					0x73a91b0f
+					0x70000f03
+					0x001f0000
+				>;
+			};
+
+			timing-792000000 {
+				clock-frequency = <792000000>;
+
+				nvidia,emem-configuration = <
+					0x0e00000b
+					0x80000040
+					0x00000004
+					0x00000005
+					0x00000013
+					0x0000000c
+					0x0000000d
+					0x00000002
+					0x00000003
+					0x0000000c
+					0x00000002
+					0x00000002
+					0x00000006
+					0x00000008
+					0x08060202
+					0x00170e13
+					0x736c2414
+					0x70000f02
+					0x001f0000
+				>;
+			};
+
+			timing-924000000 {
+				clock-frequency = <924000000>;
+
+				nvidia,emem-configuration = <
+					0x0e00000d
+					0x80000040
+					0x00000005
+					0x00000006
+					0x00000016
+					0x0000000e
+					0x0000000f
+					0x00000002
+					0x00000004
+					0x0000000e
+					0x00000002
+					0x00000002
+					0x00000006
+					0x00000009
+					0x09060202
+					0x001a1016
+					0x734e2a17
+					0x70000f02
+					0x001f0000
+				>;
+			};
+		};
+	};
+};
diff --git a/arch/arm/boot/dts/tegra124-jetson-tk1.dts b/arch/arm/boot/dts/tegra124-jetson-tk1.dts
index dbfaba0..36a4004 100644
--- a/arch/arm/boot/dts/tegra124-jetson-tk1.dts
+++ b/arch/arm/boot/dts/tegra124-jetson-tk1.dts
@@ -3,6 +3,8 @@
 #include <dt-bindings/input/input.h>
 #include "tegra124.dtsi"
 
+#include "tegra124-jetson-tk1-emc.dtsi"
+
 / {
 	model = "NVIDIA Tegra124 Jetson TK1";
 	compatible = "nvidia,jetson-tk1", "nvidia,tegra124";
-- 
1.9.3


^ permalink raw reply	[flat|nested] 21+ messages in thread

* [PATCH v6 10/15] memory: tegra: Add API needed by the EMC driver
  2015-02-12 14:06 [PATCH v6 00/15] Tegra124 EMC (external memory controller) support Tomeu Vizoso
                   ` (8 preceding siblings ...)
  2015-02-12 14:06 ` [PATCH v6 09/15] ARM: tegra: Add EMC timings to Jetson TK1 " Tomeu Vizoso
@ 2015-02-12 14:06 ` Tomeu Vizoso
  2015-02-12 14:06 ` [PATCH v6 11/15] memory: tegra: Add EMC (external memory controller) driver Tomeu Vizoso
                   ` (4 subsequent siblings)
  14 siblings, 0 replies; 21+ messages in thread
From: Tomeu Vizoso @ 2015-02-12 14:06 UTC (permalink / raw)
  To: linux-tegra
  Cc: Javier Martinez Canillas, Mikko Perttunen, Mikko Perttunen,
	Tomeu Vizoso, Stephen Warren, Thierry Reding, Alexandre Courbot,
	Joerg Roedel, linux-kernel

From: Mikko Perttunen <mperttunen@nvidia.com>

The EMC driver needs to know the number of external memory devices and
also needs to update the EMEM configuration based on the new rate of the
memory bus.

To know how to update the EMEM config, looks up the values of the burst
regs in the DT, for a given timing.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>

---

v5:	* Misc. style fixes
	* Move new function prototypes to include/soc/tegra/mc.h
	* Plug two device_node leaks

v4:	* Adapt to changes in the iommu patchset
	* Improve error reporting
	* Adapt to changes in the OF bindings
---
 drivers/memory/tegra/mc.c       | 136 ++++++++++++++++++++++++++++++++++++++++
 drivers/memory/tegra/tegra124.c |  44 +++++++++++++
 include/soc/tegra/mc.h          |  14 ++++-
 3 files changed, 193 insertions(+), 1 deletion(-)

diff --git a/drivers/memory/tegra/mc.c b/drivers/memory/tegra/mc.c
index fe3c44e..4e3a886 100644
--- a/drivers/memory/tegra/mc.c
+++ b/drivers/memory/tegra/mc.c
@@ -13,6 +13,9 @@
 #include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
+#include <linux/sort.h>
+
+#include <soc/tegra/fuse.h>
 
 #include "mc.h"
 
@@ -48,6 +51,9 @@
 #define  MC_EMEM_ARB_CFG_CYCLES_PER_UPDATE_MASK	0x1ff
 #define MC_EMEM_ARB_MISC0 0xd8
 
+#define MC_EMEM_ADR_CFG 0x54
+#define MC_EMEM_ADR_CFG_EMEM_NUMDEV BIT(0)
+
 static const struct of_device_id tegra_mc_of_match[] = {
 #ifdef CONFIG_ARCH_TEGRA_3x_SOC
 	{ .compatible = "nvidia,tegra30-mc", .data = &tegra30_mc_soc },
@@ -91,6 +97,130 @@ static int tegra_mc_setup_latency_allowance(struct tegra_mc *mc)
 	return 0;
 }
 
+void tegra_mc_write_emem_configuration(struct tegra_mc *mc, unsigned long rate)
+{
+	unsigned int i;
+	struct tegra_mc_timing *timing = NULL;
+
+	for (i = 0; i < mc->num_timings; i++) {
+		if (mc->timings[i].rate == rate) {
+			timing = &mc->timings[i];
+			break;
+		}
+	}
+
+	if (!timing) {
+		dev_err(mc->dev, "no memory timing registered for rate %lu\n",
+			rate);
+		return;
+	}
+
+	for (i = 0; i < mc->soc->num_emem_regs; ++i)
+		mc_writel(mc, timing->emem_data[i], mc->soc->emem_regs[i]);
+}
+
+unsigned int tegra_mc_get_emem_device_count(struct tegra_mc *mc)
+{
+	u8 dram_count;
+
+	dram_count = mc_readl(mc, MC_EMEM_ADR_CFG);
+	dram_count &= MC_EMEM_ADR_CFG_EMEM_NUMDEV;
+	dram_count++;
+
+	return dram_count;
+}
+
+static int load_one_timing(struct tegra_mc *mc,
+			   struct tegra_mc_timing *timing,
+			   struct device_node *node)
+{
+	int err;
+	u32 tmp;
+
+	err = of_property_read_u32(node, "clock-frequency", &tmp);
+	if (err) {
+		dev_err(mc->dev,
+			"timing %s: failed to read rate\n", node->name);
+		return err;
+	}
+
+	timing->rate = tmp;
+	timing->emem_data = devm_kcalloc(mc->dev, mc->soc->num_emem_regs,
+					 sizeof(u32), GFP_KERNEL);
+	if (!timing->emem_data)
+		return -ENOMEM;
+
+	err = of_property_read_u32_array(node, "nvidia,emem-configuration",
+					 timing->emem_data,
+					 mc->soc->num_emem_regs);
+	if (err) {
+		dev_err(mc->dev,
+			"timing %s: failed to read EMEM configuration\n",
+			node->name);
+		return err;
+	}
+
+	return 0;
+}
+
+static int load_timings(struct tegra_mc *mc, struct device_node *node)
+{
+	struct device_node *child;
+	struct tegra_mc_timing *timing;
+	int child_count = of_get_child_count(node);
+	int i = 0, err;
+
+	mc->timings = devm_kcalloc(mc->dev, child_count, sizeof(*timing),
+				   GFP_KERNEL);
+	if (!mc->timings)
+		return -ENOMEM;
+
+	mc->num_timings = child_count;
+
+	for_each_child_of_node(node, child) {
+		timing = &mc->timings[i++];
+
+		err = load_one_timing(mc, timing, child);
+		if (err)
+			return err;
+	}
+
+	return 0;
+}
+
+static int tegra_mc_setup_timings(struct tegra_mc *mc)
+{
+	struct device_node *node;
+	u32 ram_code, node_ram_code;
+	int err;
+
+	ram_code = tegra_read_ram_code();
+
+	mc->num_timings = 0;
+
+	for_each_child_of_node(mc->dev->of_node, node) {
+		err = of_property_read_u32(node, "nvidia,ram-code",
+					   &node_ram_code);
+		if (err || (node_ram_code != ram_code)) {
+			of_node_put(node);
+			continue;
+		}
+
+		err = load_timings(mc, node);
+		if (err)
+			return err;
+		of_node_put(node);
+		break;
+	}
+
+	if (mc->num_timings == 0)
+		dev_warn(mc->dev,
+			 "no memory timings for RAM code %u registered\n",
+			 ram_code);
+
+	return 0;
+}
+
 static const char *const status_names[32] = {
 	[ 1] = "External interrupt",
 	[ 6] = "EMEM address decode error",
@@ -248,6 +378,12 @@ static int tegra_mc_probe(struct platform_device *pdev)
 		return err;
 	}
 
+	err = tegra_mc_setup_timings(mc);
+	if (err < 0) {
+		dev_err(&pdev->dev, "failed to setup timings: %d\n", err);
+		return err;
+	}
+
 	if (IS_ENABLED(CONFIG_TEGRA_IOMMU_SMMU)) {
 		mc->smmu = tegra_smmu_probe(&pdev->dev, mc->soc->smmu, mc);
 		if (IS_ERR(mc->smmu)) {
diff --git a/drivers/memory/tegra/tegra124.c b/drivers/memory/tegra/tegra124.c
index 278d40b..3e9a99a 100644
--- a/drivers/memory/tegra/tegra124.c
+++ b/drivers/memory/tegra/tegra124.c
@@ -15,6 +15,48 @@
 
 #include "mc.h"
 
+#define MC_EMEM_ARB_CFG				0x90
+#define MC_EMEM_ARB_OUTSTANDING_REQ		0x94
+#define MC_EMEM_ARB_TIMING_RCD			0x98
+#define MC_EMEM_ARB_TIMING_RP			0x9c
+#define MC_EMEM_ARB_TIMING_RC			0xa0
+#define MC_EMEM_ARB_TIMING_RAS			0xa4
+#define MC_EMEM_ARB_TIMING_FAW			0xa8
+#define MC_EMEM_ARB_TIMING_RRD			0xac
+#define MC_EMEM_ARB_TIMING_RAP2PRE		0xb0
+#define MC_EMEM_ARB_TIMING_WAP2PRE		0xb4
+#define MC_EMEM_ARB_TIMING_R2R			0xb8
+#define MC_EMEM_ARB_TIMING_W2W			0xbc
+#define MC_EMEM_ARB_TIMING_R2W			0xc0
+#define MC_EMEM_ARB_TIMING_W2R			0xc4
+#define MC_EMEM_ARB_DA_TURNS			0xd0
+#define MC_EMEM_ARB_DA_COVERS			0xd4
+#define MC_EMEM_ARB_MISC0			0xd8
+#define MC_EMEM_ARB_MISC1			0xdc
+#define MC_EMEM_ARB_RING1_THROTTLE		0xe0
+
+static const unsigned long tegra124_mc_emem_regs[] = {
+	MC_EMEM_ARB_CFG,
+	MC_EMEM_ARB_OUTSTANDING_REQ,
+	MC_EMEM_ARB_TIMING_RCD,
+	MC_EMEM_ARB_TIMING_RP,
+	MC_EMEM_ARB_TIMING_RC,
+	MC_EMEM_ARB_TIMING_RAS,
+	MC_EMEM_ARB_TIMING_FAW,
+	MC_EMEM_ARB_TIMING_RRD,
+	MC_EMEM_ARB_TIMING_RAP2PRE,
+	MC_EMEM_ARB_TIMING_WAP2PRE,
+	MC_EMEM_ARB_TIMING_R2R,
+	MC_EMEM_ARB_TIMING_W2W,
+	MC_EMEM_ARB_TIMING_R2W,
+	MC_EMEM_ARB_TIMING_W2R,
+	MC_EMEM_ARB_DA_TURNS,
+	MC_EMEM_ARB_DA_COVERS,
+	MC_EMEM_ARB_MISC0,
+	MC_EMEM_ARB_MISC1,
+	MC_EMEM_ARB_RING1_THROTTLE
+};
+
 static const struct tegra_mc_client tegra124_mc_clients[] = {
 	{
 		.id = 0x00,
@@ -991,5 +1033,7 @@ const struct tegra_mc_soc tegra124_mc_soc = {
 	.num_address_bits = 34,
 	.atom_size = 32,
 	.smmu = &tegra124_smmu_soc,
+	.emem_regs = tegra124_mc_emem_regs,
+	.num_emem_regs = ARRAY_SIZE(tegra124_mc_emem_regs),
 };
 #endif /* CONFIG_ARCH_TEGRA_124_SOC */
diff --git a/include/soc/tegra/mc.h b/include/soc/tegra/mc.h
index 63deb8d..90b558e 100644
--- a/include/soc/tegra/mc.h
+++ b/include/soc/tegra/mc.h
@@ -20,6 +20,12 @@ struct tegra_smmu_enable {
 	unsigned int bit;
 };
 
+struct tegra_mc_timing {
+	unsigned long rate;
+
+	u32 *emem_data;
+};
+
 /* latency allowance */
 struct tegra_mc_la {
 	unsigned int reg;
@@ -84,7 +90,7 @@ struct tegra_mc_soc {
 	const struct tegra_mc_client *clients;
 	unsigned int num_clients;
 
-	const unsigned int *emem_regs;
+	const unsigned long *emem_regs;
 	unsigned int num_emem_regs;
 
 	unsigned int num_address_bits;
@@ -102,6 +108,12 @@ struct tegra_mc {
 
 	const struct tegra_mc_soc *soc;
 	unsigned long tick;
+
+	struct tegra_mc_timing *timings;
+	unsigned int num_timings;
 };
 
+void tegra_mc_write_emem_configuration(struct tegra_mc *mc, unsigned long rate);
+unsigned int tegra_mc_get_emem_device_count(struct tegra_mc *mc);
+
 #endif /* __SOC_TEGRA_MC_H__ */
-- 
1.9.3


^ permalink raw reply	[flat|nested] 21+ messages in thread

* [PATCH v6 11/15] memory: tegra: Add EMC (external memory controller) driver
  2015-02-12 14:06 [PATCH v6 00/15] Tegra124 EMC (external memory controller) support Tomeu Vizoso
                   ` (9 preceding siblings ...)
  2015-02-12 14:06 ` [PATCH v6 10/15] memory: tegra: Add API needed by the EMC driver Tomeu Vizoso
@ 2015-02-12 14:06 ` Tomeu Vizoso
  2015-02-12 14:06 ` [PATCH v6 12/15] clk: Expose clk_hw_reparent to providers Tomeu Vizoso
                   ` (3 subsequent siblings)
  14 siblings, 0 replies; 21+ messages in thread
From: Tomeu Vizoso @ 2015-02-12 14:06 UTC (permalink / raw)
  To: linux-tegra
  Cc: Javier Martinez Canillas, Mikko Perttunen, Mikko Perttunen,
	Tomeu Vizoso, Stephen Warren, Thierry Reding, Alexandre Courbot,
	Joerg Roedel, linux-kernel

From: Mikko Perttunen <mperttunen@nvidia.com>

Implements functionality needed to change the rate of the memory bus clock.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>

---

v5:	* Put function prototypes in soc/tegra/emc.h instead
	* Misc. style fixes
	* Remove emc_burst_data member from the union
	* Add members for registers emc_zcal_interval, emc_mrs_wait_cnt
	  and emc_xm2dqspadctrl2
	* Misc. readability improvements
	* Add struct tegra_emc as a parameter in the API, removing the
	  need for a global.

v4:	* Move CONFIG to drivers/memory/tegra/Kconfig
	* Adapt to changes in the OF bindings
	* Fix comment style
	* Remove unused struct member
	* Improve error reporting

v2:	* Use subsys_initcall(), so it gets probed after the MC driver and
	  before the CAR driver
---
 drivers/memory/tegra/Kconfig        |   11 +
 drivers/memory/tegra/Makefile       |    2 +
 drivers/memory/tegra/tegra124-emc.c | 1129 +++++++++++++++++++++++++++++++++++
 include/soc/tegra/emc.h             |   19 +
 4 files changed, 1161 insertions(+)
 create mode 100644 drivers/memory/tegra/tegra124-emc.c
 create mode 100644 include/soc/tegra/emc.h

diff --git a/drivers/memory/tegra/Kconfig b/drivers/memory/tegra/Kconfig
index 5710876..c131343 100644
--- a/drivers/memory/tegra/Kconfig
+++ b/drivers/memory/tegra/Kconfig
@@ -5,3 +5,14 @@ config TEGRA_MC
 	help
 	  This driver supports the Memory Controller (MC) hardware found on
 	  NVIDIA Tegra SoCs.
+
+
+config TEGRA124_EMC
+	bool "Tegra124 External Memory Controller driver"
+	default y
+	depends on TEGRA_MC && ARCH_TEGRA_124_SOC
+	help
+	  This driver is for the External Memory Controller (EMC) found on
+	  Tegra124 chips. The EMC controls the external DRAM on the board.
+	  This driver is required to change memory timings / clock rate for
+	  external memory.
\ No newline at end of file
diff --git a/drivers/memory/tegra/Makefile b/drivers/memory/tegra/Makefile
index 0d9f497..c012960 100644
--- a/drivers/memory/tegra/Makefile
+++ b/drivers/memory/tegra/Makefile
@@ -5,3 +5,5 @@ tegra-mc-$(CONFIG_ARCH_TEGRA_114_SOC) += tegra114.o
 tegra-mc-$(CONFIG_ARCH_TEGRA_124_SOC) += tegra124.o
 
 obj-$(CONFIG_TEGRA_MC) += tegra-mc.o
+
+obj-$(CONFIG_TEGRA124_EMC) += tegra124-emc.o
diff --git a/drivers/memory/tegra/tegra124-emc.c b/drivers/memory/tegra/tegra124-emc.c
new file mode 100644
index 0000000..7036ad5
--- /dev/null
+++ b/drivers/memory/tegra/tegra124-emc.c
@@ -0,0 +1,1129 @@
+/*
+ * Copyright (c) 2014, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * Author:
+ *	Mikko Perttunen <mperttunen@nvidia.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/sort.h>
+#include <linux/string.h>
+
+#include <soc/tegra/emc.h>
+#include <soc/tegra/fuse.h>
+#include <soc/tegra/mc.h>
+
+#define EMC_FBIO_CFG5				0x104
+#define	EMC_FBIO_CFG5_DRAM_TYPE_MASK		0x3
+#define	EMC_FBIO_CFG5_DRAM_TYPE_SHIFT		0
+
+#define EMC_INTSTATUS				0x0
+#define EMC_INTSTATUS_CLKCHANGE_COMPLETE	BIT(4)
+
+#define EMC_CFG					0xc
+#define EMC_CFG_DRAM_CLKSTOP_PD			BIT(31)
+#define EMC_CFG_DRAM_CLKSTOP_SR			BIT(30)
+#define EMC_CFG_DRAM_ACPD			BIT(29)
+#define EMC_CFG_DYN_SREF			BIT(28)
+#define EMC_CFG_PWR_MASK			((0xF << 28) | BIT(18))
+#define EMC_CFG_DSR_VTTGEN_DRV_EN		BIT(18)
+
+#define EMC_REFCTRL				0x20
+#define EMC_REFCTRL_DEV_SEL_SHIFT		0
+#define EMC_REFCTRL_ENABLE			BIT(31)
+
+#define EMC_TIMING_CONTROL			0x28
+#define EMC_RC					0x2c
+#define EMC_RFC					0x30
+#define EMC_RAS					0x34
+#define EMC_RP					0x38
+#define EMC_R2W					0x3c
+#define EMC_W2R					0x40
+#define EMC_R2P					0x44
+#define EMC_W2P					0x48
+#define EMC_RD_RCD				0x4c
+#define EMC_WR_RCD				0x50
+#define EMC_RRD					0x54
+#define EMC_REXT				0x58
+#define EMC_WDV					0x5c
+#define EMC_QUSE				0x60
+#define EMC_QRST				0x64
+#define EMC_QSAFE				0x68
+#define EMC_RDV					0x6c
+#define EMC_REFRESH				0x70
+#define EMC_BURST_REFRESH_NUM			0x74
+#define EMC_PDEX2WR				0x78
+#define EMC_PDEX2RD				0x7c
+#define EMC_PCHG2PDEN				0x80
+#define EMC_ACT2PDEN				0x84
+#define EMC_AR2PDEN				0x88
+#define EMC_RW2PDEN				0x8c
+#define EMC_TXSR				0x90
+#define EMC_TCKE				0x94
+#define EMC_TFAW				0x98
+#define EMC_TRPAB				0x9c
+#define EMC_TCLKSTABLE				0xa0
+#define EMC_TCLKSTOP				0xa4
+#define EMC_TREFBW				0xa8
+#define EMC_ODT_WRITE				0xb0
+#define EMC_ODT_READ				0xb4
+#define EMC_WEXT				0xb8
+#define EMC_CTT					0xbc
+#define EMC_RFC_SLR				0xc0
+#define EMC_MRS_WAIT_CNT2			0xc4
+
+#define EMC_MRS_WAIT_CNT			0xc8
+#define EMC_MRS_WAIT_CNT_SHORT_WAIT_SHIFT	0
+#define EMC_MRS_WAIT_CNT_SHORT_WAIT_MASK	\
+	(0x3FF << EMC_MRS_WAIT_CNT_SHORT_WAIT_SHIFT)
+#define EMC_MRS_WAIT_CNT_LONG_WAIT_SHIFT	16
+#define EMC_MRS_WAIT_CNT_LONG_WAIT_MASK		\
+	(0x3FF << EMC_MRS_WAIT_CNT_LONG_WAIT_SHIFT)
+
+#define EMC_MRS					0xcc
+#define EMC_MODE_SET_DLL_RESET			BIT(8)
+#define EMC_MODE_SET_LONG_CNT			BIT(26)
+#define EMC_EMRS				0xd0
+#define EMC_REF					0xd4
+#define EMC_PRE					0xd8
+
+#define EMC_SELF_REF				0xe0
+#define EMC_SELF_REF_CMD_ENABLED		BIT(0)
+#define EMC_SELF_REF_DEV_SEL_SHIFT		30
+
+#define EMC_MRW					0xe8
+
+#define EMC_MRR					0xec
+#define EMC_MRR_MA_SHIFT			16
+#define LPDDR2_MR4_TEMP_SHIFT			0
+
+#define EMC_XM2DQSPADCTRL3			0xf8
+#define EMC_FBIO_SPARE				0x100
+
+#define EMC_FBIO_CFG6				0x114
+#define EMC_EMRS2				0x12c
+#define EMC_MRW2				0x134
+#define EMC_MRW4				0x13c
+#define EMC_EINPUT				0x14c
+#define EMC_EINPUT_DURATION			0x150
+#define EMC_PUTERM_EXTRA			0x154
+#define EMC_TCKESR				0x158
+#define EMC_TPD					0x15c
+
+#define EMC_AUTO_CAL_CONFIG			0x2a4
+#define EMC_AUTO_CAL_CONFIG_AUTO_CAL_START	BIT(31)
+#define EMC_AUTO_CAL_INTERVAL			0x2a8
+#define EMC_AUTO_CAL_STATUS			0x2ac
+#define EMC_AUTO_CAL_STATUS_ACTIVE		BIT(31)
+#define EMC_STATUS				0x2b4
+#define EMC_STATUS_TIMING_UPDATE_STALLED	BIT(23)
+
+#define EMC_CFG_2				0x2b8
+#define EMC_CFG_2_MODE_SHIFT			0
+#define EMC_CFG_2_DIS_STP_OB_CLK_DURING_NON_WR	BIT(6)
+
+#define EMC_CFG_DIG_DLL				0x2bc
+#define EMC_CFG_DIG_DLL_PERIOD			0x2c0
+#define EMC_RDV_MASK				0x2cc
+#define EMC_WDV_MASK				0x2d0
+#define EMC_CTT_DURATION			0x2d8
+#define EMC_CTT_TERM_CTRL			0x2dc
+#define EMC_ZCAL_INTERVAL			0x2e0
+#define EMC_ZCAL_WAIT_CNT			0x2e4
+
+#define EMC_ZQ_CAL				0x2ec
+#define EMC_ZQ_CAL_CMD				BIT(0)
+#define EMC_ZQ_CAL_LONG				BIT(4)
+#define EMC_ZQ_CAL_LONG_CMD_DEV0		\
+	(DRAM_DEV_SEL_0 | EMC_ZQ_CAL_LONG | EMC_ZQ_CAL_CMD)
+#define EMC_ZQ_CAL_LONG_CMD_DEV1		\
+	(DRAM_DEV_SEL_1 | EMC_ZQ_CAL_LONG | EMC_ZQ_CAL_CMD)
+
+#define EMC_XM2CMDPADCTRL			0x2f0
+#define EMC_XM2DQSPADCTRL			0x2f8
+#define EMC_XM2DQSPADCTRL2			0x2fc
+#define EMC_XM2DQSPADCTRL2_RX_FT_REC_ENABLE	BIT(0)
+#define EMC_XM2DQSPADCTRL2_VREF_ENABLE		BIT(5)
+#define EMC_XM2DQPADCTRL			0x300
+#define EMC_XM2DQPADCTRL2			0x304
+#define EMC_XM2CLKPADCTRL			0x308
+#define EMC_XM2COMPPADCTRL			0x30c
+#define EMC_XM2VTTGENPADCTRL			0x310
+#define EMC_XM2VTTGENPADCTRL2			0x314
+#define EMC_XM2VTTGENPADCTRL3			0x318
+#define EMC_XM2DQSPADCTRL4			0x320
+#define EMC_DLL_XFORM_DQS0			0x328
+#define EMC_DLL_XFORM_DQS1			0x32c
+#define EMC_DLL_XFORM_DQS2			0x330
+#define EMC_DLL_XFORM_DQS3			0x334
+#define EMC_DLL_XFORM_DQS4			0x338
+#define EMC_DLL_XFORM_DQS5			0x33c
+#define EMC_DLL_XFORM_DQS6			0x340
+#define EMC_DLL_XFORM_DQS7			0x344
+#define EMC_DLL_XFORM_QUSE0			0x348
+#define EMC_DLL_XFORM_QUSE1			0x34c
+#define EMC_DLL_XFORM_QUSE2			0x350
+#define EMC_DLL_XFORM_QUSE3			0x354
+#define EMC_DLL_XFORM_QUSE4			0x358
+#define EMC_DLL_XFORM_QUSE5			0x35c
+#define EMC_DLL_XFORM_QUSE6			0x360
+#define EMC_DLL_XFORM_QUSE7			0x364
+#define EMC_DLL_XFORM_DQ0			0x368
+#define EMC_DLL_XFORM_DQ1			0x36c
+#define EMC_DLL_XFORM_DQ2			0x370
+#define EMC_DLL_XFORM_DQ3			0x374
+#define EMC_DLI_TRIM_TXDQS0			0x3a8
+#define EMC_DLI_TRIM_TXDQS1			0x3ac
+#define EMC_DLI_TRIM_TXDQS2			0x3b0
+#define EMC_DLI_TRIM_TXDQS3			0x3b4
+#define EMC_DLI_TRIM_TXDQS4			0x3b8
+#define EMC_DLI_TRIM_TXDQS5			0x3bc
+#define EMC_DLI_TRIM_TXDQS6			0x3c0
+#define EMC_DLI_TRIM_TXDQS7			0x3c4
+#define EMC_STALL_THEN_EXE_AFTER_CLKCHANGE	0x3cc
+#define EMC_SEL_DPD_CTRL			0x3d8
+#define EMC_SEL_DPD_CTRL_DATA_SEL_DPD		BIT(8)
+#define EMC_SEL_DPD_CTRL_ODT_SEL_DPD		BIT(5)
+#define EMC_SEL_DPD_CTRL_RESET_SEL_DPD		BIT(4)
+#define EMC_SEL_DPD_CTRL_CA_SEL_DPD		BIT(3)
+#define EMC_SEL_DPD_CTRL_CLK_SEL_DPD		BIT(2)
+#define EMC_SEL_DPD_CTRL_DDR3_MASK	\
+	((0xf << 2) | BIT(8))
+#define EMC_SEL_DPD_CTRL_MASK \
+	((0x3 << 2) | BIT(5) | BIT(8))
+#define EMC_PRE_REFRESH_REQ_CNT			0x3dc
+#define EMC_DYN_SELF_REF_CONTROL		0x3e0
+#define EMC_TXSRDLL				0x3e4
+#define EMC_CCFIFO_ADDR				0x3e8
+#define EMC_CCFIFO_DATA				0x3ec
+#define EMC_CCFIFO_STATUS			0x3f0
+#define EMC_CDB_CNTL_1				0x3f4
+#define EMC_CDB_CNTL_2				0x3f8
+#define EMC_XM2CLKPADCTRL2			0x3fc
+#define EMC_AUTO_CAL_CONFIG2			0x458
+#define EMC_AUTO_CAL_CONFIG3			0x45c
+#define EMC_IBDLY				0x468
+#define EMC_DLL_XFORM_ADDR0			0x46c
+#define EMC_DLL_XFORM_ADDR1			0x470
+#define EMC_DLL_XFORM_ADDR2			0x474
+#define EMC_DSR_VTTGEN_DRV			0x47c
+#define EMC_TXDSRVTTGEN				0x480
+#define EMC_XM2CMDPADCTRL4			0x484
+#define EMC_XM2CMDPADCTRL5			0x488
+#define EMC_DLL_XFORM_DQS8			0x4a0
+#define EMC_DLL_XFORM_DQS9			0x4a4
+#define EMC_DLL_XFORM_DQS10			0x4a8
+#define EMC_DLL_XFORM_DQS11			0x4ac
+#define EMC_DLL_XFORM_DQS12			0x4b0
+#define EMC_DLL_XFORM_DQS13			0x4b4
+#define EMC_DLL_XFORM_DQS14			0x4b8
+#define EMC_DLL_XFORM_DQS15			0x4bc
+#define EMC_DLL_XFORM_QUSE8			0x4c0
+#define EMC_DLL_XFORM_QUSE9			0x4c4
+#define EMC_DLL_XFORM_QUSE10			0x4c8
+#define EMC_DLL_XFORM_QUSE11			0x4cc
+#define EMC_DLL_XFORM_QUSE12			0x4d0
+#define EMC_DLL_XFORM_QUSE13			0x4d4
+#define EMC_DLL_XFORM_QUSE14			0x4d8
+#define EMC_DLL_XFORM_QUSE15			0x4dc
+#define EMC_DLL_XFORM_DQ4			0x4e0
+#define EMC_DLL_XFORM_DQ5			0x4e4
+#define EMC_DLL_XFORM_DQ6			0x4e8
+#define EMC_DLL_XFORM_DQ7			0x4ec
+#define EMC_DLI_TRIM_TXDQS8			0x520
+#define EMC_DLI_TRIM_TXDQS9			0x524
+#define EMC_DLI_TRIM_TXDQS10			0x528
+#define EMC_DLI_TRIM_TXDQS11			0x52c
+#define EMC_DLI_TRIM_TXDQS12			0x530
+#define EMC_DLI_TRIM_TXDQS13			0x534
+#define EMC_DLI_TRIM_TXDQS14			0x538
+#define EMC_DLI_TRIM_TXDQS15			0x53c
+#define EMC_CDB_CNTL_3				0x540
+#define EMC_XM2DQSPADCTRL5			0x544
+#define EMC_XM2DQSPADCTRL6			0x548
+#define EMC_XM2DQPADCTRL3			0x54c
+#define EMC_DLL_XFORM_ADDR3			0x550
+#define EMC_DLL_XFORM_ADDR4			0x554
+#define EMC_DLL_XFORM_ADDR5			0x558
+#define EMC_CFG_PIPE				0x560
+#define EMC_QPOP				0x564
+#define EMC_QUSE_WIDTH				0x568
+#define EMC_PUTERM_WIDTH			0x56c
+#define EMC_BGBIAS_CTL0				0x570
+#define EMC_BGBIAS_CTL0_BIAS0_DSC_E_PWRD_IBIAS_RX BIT(3)
+#define EMC_BGBIAS_CTL0_BIAS0_DSC_E_PWRD_IBIAS_VTTGEN BIT(2)
+#define EMC_BGBIAS_CTL0_BIAS0_DSC_E_PWRD	BIT(1)
+#define EMC_PUTERM_ADJ				0x574
+
+#define DRAM_DEV_SEL_ALL			0
+#define DRAM_DEV_SEL_0				(2 << 30)
+#define DRAM_DEV_SEL_1				(1 << 30)
+
+#define EMC_CFG_POWER_FEATURES_MASK		\
+	(EMC_CFG_DYN_SREF | EMC_CFG_DRAM_ACPD | EMC_CFG_DRAM_CLKSTOP_SR | \
+	EMC_CFG_DRAM_CLKSTOP_PD | EMC_CFG_DSR_VTTGEN_DRV_EN)
+#define EMC_REFCTRL_DEV_SEL(n) (((n > 1) ? 0 : 2) << EMC_REFCTRL_DEV_SEL_SHIFT)
+#define EMC_DRAM_DEV_SEL(n) ((n > 1) ? DRAM_DEV_SEL_ALL : DRAM_DEV_SEL_0)
+
+/* Maximum amount of time in us. to wait for changes to become effective */
+#define EMC_STATUS_UPDATE_TIMEOUT		1000
+
+enum emc_dram_type {
+	DRAM_TYPE_DDR3 = 0,
+	DRAM_TYPE_DDR1 = 1,
+	DRAM_TYPE_LPDDR3 = 2,
+	DRAM_TYPE_DDR2 = 3
+};
+
+enum emc_dll_change {
+	DLL_CHANGE_NONE,
+	DLL_CHANGE_ON,
+	DLL_CHANGE_OFF
+};
+
+static const unsigned long emc_burst_regs[] = {
+	EMC_RC,
+	EMC_RFC,
+	EMC_RFC_SLR,
+	EMC_RAS,
+	EMC_RP,
+	EMC_R2W,
+	EMC_W2R,
+	EMC_R2P,
+	EMC_W2P,
+	EMC_RD_RCD,
+	EMC_WR_RCD,
+	EMC_RRD,
+	EMC_REXT,
+	EMC_WEXT,
+	EMC_WDV,
+	EMC_WDV_MASK,
+	EMC_QUSE,
+	EMC_QUSE_WIDTH,
+	EMC_IBDLY,
+	EMC_EINPUT,
+	EMC_EINPUT_DURATION,
+	EMC_PUTERM_EXTRA,
+	EMC_PUTERM_WIDTH,
+	EMC_PUTERM_ADJ,
+	EMC_CDB_CNTL_1,
+	EMC_CDB_CNTL_2,
+	EMC_CDB_CNTL_3,
+	EMC_QRST,
+	EMC_QSAFE,
+	EMC_RDV,
+	EMC_RDV_MASK,
+	EMC_REFRESH,
+	EMC_BURST_REFRESH_NUM,
+	EMC_PRE_REFRESH_REQ_CNT,
+	EMC_PDEX2WR,
+	EMC_PDEX2RD,
+	EMC_PCHG2PDEN,
+	EMC_ACT2PDEN,
+	EMC_AR2PDEN,
+	EMC_RW2PDEN,
+	EMC_TXSR,
+	EMC_TXSRDLL,
+	EMC_TCKE,
+	EMC_TCKESR,
+	EMC_TPD,
+	EMC_TFAW,
+	EMC_TRPAB,
+	EMC_TCLKSTABLE,
+	EMC_TCLKSTOP,
+	EMC_TREFBW,
+	EMC_FBIO_CFG6,
+	EMC_ODT_WRITE,
+	EMC_ODT_READ,
+	EMC_FBIO_CFG5,
+	EMC_CFG_DIG_DLL,
+	EMC_CFG_DIG_DLL_PERIOD,
+	EMC_DLL_XFORM_DQS0,
+	EMC_DLL_XFORM_DQS1,
+	EMC_DLL_XFORM_DQS2,
+	EMC_DLL_XFORM_DQS3,
+	EMC_DLL_XFORM_DQS4,
+	EMC_DLL_XFORM_DQS5,
+	EMC_DLL_XFORM_DQS6,
+	EMC_DLL_XFORM_DQS7,
+	EMC_DLL_XFORM_DQS8,
+	EMC_DLL_XFORM_DQS9,
+	EMC_DLL_XFORM_DQS10,
+	EMC_DLL_XFORM_DQS11,
+	EMC_DLL_XFORM_DQS12,
+	EMC_DLL_XFORM_DQS13,
+	EMC_DLL_XFORM_DQS14,
+	EMC_DLL_XFORM_DQS15,
+	EMC_DLL_XFORM_QUSE0,
+	EMC_DLL_XFORM_QUSE1,
+	EMC_DLL_XFORM_QUSE2,
+	EMC_DLL_XFORM_QUSE3,
+	EMC_DLL_XFORM_QUSE4,
+	EMC_DLL_XFORM_QUSE5,
+	EMC_DLL_XFORM_QUSE6,
+	EMC_DLL_XFORM_QUSE7,
+	EMC_DLL_XFORM_ADDR0,
+	EMC_DLL_XFORM_ADDR1,
+	EMC_DLL_XFORM_ADDR2,
+	EMC_DLL_XFORM_ADDR3,
+	EMC_DLL_XFORM_ADDR4,
+	EMC_DLL_XFORM_ADDR5,
+	EMC_DLL_XFORM_QUSE8,
+	EMC_DLL_XFORM_QUSE9,
+	EMC_DLL_XFORM_QUSE10,
+	EMC_DLL_XFORM_QUSE11,
+	EMC_DLL_XFORM_QUSE12,
+	EMC_DLL_XFORM_QUSE13,
+	EMC_DLL_XFORM_QUSE14,
+	EMC_DLL_XFORM_QUSE15,
+	EMC_DLI_TRIM_TXDQS0,
+	EMC_DLI_TRIM_TXDQS1,
+	EMC_DLI_TRIM_TXDQS2,
+	EMC_DLI_TRIM_TXDQS3,
+	EMC_DLI_TRIM_TXDQS4,
+	EMC_DLI_TRIM_TXDQS5,
+	EMC_DLI_TRIM_TXDQS6,
+	EMC_DLI_TRIM_TXDQS7,
+	EMC_DLI_TRIM_TXDQS8,
+	EMC_DLI_TRIM_TXDQS9,
+	EMC_DLI_TRIM_TXDQS10,
+	EMC_DLI_TRIM_TXDQS11,
+	EMC_DLI_TRIM_TXDQS12,
+	EMC_DLI_TRIM_TXDQS13,
+	EMC_DLI_TRIM_TXDQS14,
+	EMC_DLI_TRIM_TXDQS15,
+	EMC_DLL_XFORM_DQ0,
+	EMC_DLL_XFORM_DQ1,
+	EMC_DLL_XFORM_DQ2,
+	EMC_DLL_XFORM_DQ3,
+	EMC_DLL_XFORM_DQ4,
+	EMC_DLL_XFORM_DQ5,
+	EMC_DLL_XFORM_DQ6,
+	EMC_DLL_XFORM_DQ7,
+	EMC_XM2CMDPADCTRL,
+	EMC_XM2CMDPADCTRL4,
+	EMC_XM2CMDPADCTRL5,
+	EMC_XM2DQSPADCTRL2,
+	EMC_XM2DQPADCTRL2,
+	EMC_XM2DQPADCTRL3,
+	EMC_XM2CLKPADCTRL,
+	EMC_XM2CLKPADCTRL2,
+	EMC_XM2COMPPADCTRL,
+	EMC_XM2VTTGENPADCTRL,
+	EMC_XM2VTTGENPADCTRL2,
+	EMC_XM2VTTGENPADCTRL3,
+	EMC_XM2DQSPADCTRL3,
+	EMC_XM2DQSPADCTRL4,
+	EMC_XM2DQSPADCTRL5,
+	EMC_XM2DQSPADCTRL6,
+	EMC_DSR_VTTGEN_DRV,
+	EMC_TXDSRVTTGEN,
+	EMC_FBIO_SPARE,
+	EMC_ZCAL_INTERVAL,
+	EMC_ZCAL_WAIT_CNT,
+	EMC_MRS_WAIT_CNT,
+	EMC_MRS_WAIT_CNT2,
+	EMC_CTT,
+	EMC_CTT_DURATION,
+	EMC_CFG_PIPE,
+	EMC_DYN_SELF_REF_CONTROL,
+	EMC_QPOP
+};
+
+struct emc_timing {
+	unsigned long rate;
+
+	u32 emc_burst_data[ARRAY_SIZE(emc_burst_regs)];
+
+	u32 emc_auto_cal_config;
+	u32 emc_auto_cal_config2;
+	u32 emc_auto_cal_config3;
+	u32 emc_auto_cal_interval;
+	u32 emc_bgbias_ctl0;
+	u32 emc_cfg;
+	u32 emc_cfg_2;
+	u32 emc_cfg_dig_dll;
+	u32 emc_ctt_term_ctrl;
+	u32 emc_mode_1;
+	u32 emc_mode_2;
+	u32 emc_mode_4;
+	u32 emc_mode_reset;
+	u32 emc_mrs_wait_cnt;
+	u32 emc_sel_dpd_ctrl;
+	u32 emc_xm2dqspadctrl2;
+	u32 emc_zcal_cnt_long;
+	u32 emc_zcal_interval;
+};
+
+struct tegra_emc {
+	struct device *dev;
+
+	struct tegra_mc *mc;
+
+	void __iomem *regs;
+
+	enum emc_dram_type dram_type;
+	unsigned int dram_num;
+
+	struct emc_timing last_timing;
+	struct emc_timing *timings;
+	unsigned int num_timings;
+};
+
+/* Timing change sequence functions */
+
+static void emc_ccfifo_writel(struct tegra_emc *tegra, u32 val,
+			      unsigned long offs)
+{
+	writel(val, tegra->regs + EMC_CCFIFO_DATA);
+	writel(offs, tegra->regs + EMC_CCFIFO_ADDR);
+}
+
+static void emc_seq_update_timing(struct tegra_emc *tegra)
+{
+	unsigned int i;
+
+	writel(1, tegra->regs + EMC_TIMING_CONTROL);
+
+	for (i = 0; i < EMC_STATUS_UPDATE_TIMEOUT; ++i) {
+		if (!(readl(tegra->regs + EMC_STATUS) &
+		    EMC_STATUS_TIMING_UPDATE_STALLED))
+			return;
+		udelay(1);
+	}
+
+	dev_err(tegra->dev, "timing update failed\n");
+}
+
+static void emc_seq_disable_auto_cal(struct tegra_emc *tegra)
+{
+	unsigned int i;
+
+	writel(0, tegra->regs + EMC_AUTO_CAL_INTERVAL);
+
+	for (i = 0; i < EMC_STATUS_UPDATE_TIMEOUT; ++i) {
+		if (!(readl(tegra->regs + EMC_AUTO_CAL_STATUS) &
+		    EMC_AUTO_CAL_STATUS_ACTIVE))
+			return;
+		udelay(1);
+	}
+
+	dev_err(tegra->dev, "auto cal disable failed\n");
+}
+
+static void emc_seq_wait_clkchange(struct tegra_emc *tegra)
+{
+	unsigned int i;
+
+	for (i = 0; i < EMC_STATUS_UPDATE_TIMEOUT; ++i) {
+		if (readl(tegra->regs + EMC_INTSTATUS) &
+		    EMC_INTSTATUS_CLKCHANGE_COMPLETE)
+			return;
+		udelay(1);
+	}
+
+	dev_err(tegra->dev, "clkchange failed\n");
+}
+
+static struct emc_timing *tegra_emc_find_timing(struct tegra_emc *tegra,
+						unsigned long rate)
+{
+	unsigned int i;
+	struct emc_timing *timing = NULL;
+
+	for (i = 0; i < tegra->num_timings; i++) {
+		if (tegra->timings[i].rate == rate) {
+			timing = &tegra->timings[i];
+			break;
+		}
+	}
+
+	if (!timing) {
+		dev_err(tegra->dev, "no timing for rate %lu\n", rate);
+		return NULL;
+	}
+
+	return timing;
+}
+
+int tegra_emc_prepare_timing_change(struct tegra_emc *tegra,
+				    unsigned long rate)
+{
+	struct emc_timing *timing = tegra_emc_find_timing(tegra, rate);
+	struct emc_timing *last = &tegra->last_timing;
+	u32 val, val2, mask;
+	bool update = false;
+	unsigned int pre_wait = 0;
+	unsigned int i;
+	enum emc_dll_change dll_change;
+
+	if (!timing)
+		return -ENOENT;
+
+	if ((last->emc_mode_1 & 0x1) == (timing->emc_mode_1 & 0x1))
+		dll_change = DLL_CHANGE_NONE;
+	else if (timing->emc_mode_1 & 0x1)
+		dll_change = DLL_CHANGE_ON;
+	else
+		dll_change = DLL_CHANGE_OFF;
+
+	/* Clear CLKCHANGE_COMPLETE interrupts */
+
+	writel(EMC_INTSTATUS_CLKCHANGE_COMPLETE, tegra->regs + EMC_INTSTATUS);
+
+	/* Disable dynamic self-refresh */
+
+	val = readl(tegra->regs + EMC_CFG);
+	if (val & EMC_CFG_PWR_MASK) {
+		val &= ~EMC_CFG_POWER_FEATURES_MASK;
+		writel(val, tegra->regs + EMC_CFG);
+
+		pre_wait = 5;
+	}
+
+	/* Disable SEL_DPD_CTRL for clock change */
+
+	if (tegra->dram_type == DRAM_TYPE_DDR3)
+		mask = EMC_SEL_DPD_CTRL_DDR3_MASK;
+	else
+		mask = EMC_SEL_DPD_CTRL_MASK;
+
+	val = readl(tegra->regs + EMC_SEL_DPD_CTRL);
+	if (val & mask) {
+		val &= ~mask;
+		writel(val, tegra->regs + EMC_SEL_DPD_CTRL);
+	}
+
+	/* Prepare DQ/DQS for clock change */
+
+	val = readl(tegra->regs + EMC_BGBIAS_CTL0);
+	val2 = last->emc_bgbias_ctl0;
+	if (!(timing->emc_bgbias_ctl0 &
+	      EMC_BGBIAS_CTL0_BIAS0_DSC_E_PWRD_IBIAS_RX) &&
+	    (val & EMC_BGBIAS_CTL0_BIAS0_DSC_E_PWRD_IBIAS_RX)) {
+		val2 &= ~EMC_BGBIAS_CTL0_BIAS0_DSC_E_PWRD_IBIAS_RX;
+		update = true;
+	}
+
+	if ((val & EMC_BGBIAS_CTL0_BIAS0_DSC_E_PWRD) ||
+	    (val & EMC_BGBIAS_CTL0_BIAS0_DSC_E_PWRD_IBIAS_VTTGEN)) {
+		update = true;
+	}
+
+	if (update) {
+		writel(val2, tegra->regs + EMC_BGBIAS_CTL0);
+		if (pre_wait < 5)
+			pre_wait = 5;
+	}
+
+	update = false;
+	val = readl(tegra->regs + EMC_XM2DQSPADCTRL2);
+	if (timing->emc_xm2dqspadctrl2 & EMC_XM2DQSPADCTRL2_VREF_ENABLE &&
+	    !(val & EMC_XM2DQSPADCTRL2_VREF_ENABLE)) {
+		val |= EMC_XM2DQSPADCTRL2_VREF_ENABLE;
+		update = true;
+	}
+
+	if (timing->emc_xm2dqspadctrl2 & EMC_XM2DQSPADCTRL2_RX_FT_REC_ENABLE &&
+	    !(val & EMC_XM2DQSPADCTRL2_RX_FT_REC_ENABLE)) {
+		val |= EMC_XM2DQSPADCTRL2_RX_FT_REC_ENABLE;
+		update = true;
+	}
+
+	if (update) {
+		writel(val, tegra->regs + EMC_XM2DQSPADCTRL2);
+		if (pre_wait < 30)
+			pre_wait = 30;
+	}
+
+	/* Wait to settle */
+
+	if (pre_wait) {
+		emc_seq_update_timing(tegra);
+		udelay(pre_wait);
+	}
+
+	/* Program CTT_TERM control */
+
+	if (last->emc_ctt_term_ctrl != timing->emc_ctt_term_ctrl) {
+		emc_seq_disable_auto_cal(tegra);
+		writel(timing->emc_ctt_term_ctrl,
+		       tegra->regs + EMC_CTT_TERM_CTRL);
+		emc_seq_update_timing(tegra);
+	}
+
+	/* Program burst shadow registers */
+
+	for (i = 0; i < ARRAY_SIZE(timing->emc_burst_data); ++i)
+		__raw_writel(timing->emc_burst_data[i],
+			     tegra->regs + emc_burst_regs[i]);
+
+	tegra_mc_write_emem_configuration(tegra->mc, timing->rate);
+
+	val = timing->emc_cfg & ~EMC_CFG_POWER_FEATURES_MASK;
+	emc_ccfifo_writel(tegra, val, EMC_CFG);
+
+	/* Program AUTO_CAL_CONFIG */
+
+	if (timing->emc_auto_cal_config2 != last->emc_auto_cal_config2)
+		emc_ccfifo_writel(tegra, timing->emc_auto_cal_config2,
+				  EMC_AUTO_CAL_CONFIG2);
+
+	if (timing->emc_auto_cal_config3 != last->emc_auto_cal_config3)
+		emc_ccfifo_writel(tegra, timing->emc_auto_cal_config3,
+				  EMC_AUTO_CAL_CONFIG3);
+
+	if (timing->emc_auto_cal_config != last->emc_auto_cal_config) {
+		val = timing->emc_auto_cal_config;
+		val &= EMC_AUTO_CAL_CONFIG_AUTO_CAL_START;
+		emc_ccfifo_writel(tegra, val, EMC_AUTO_CAL_CONFIG);
+	}
+
+	/* DDR3: predict MRS long wait count */
+
+	if (tegra->dram_type == DRAM_TYPE_DDR3 &&
+	    dll_change == DLL_CHANGE_ON) {
+		u32 cnt = 512;
+
+		if (timing->emc_zcal_interval != 0 &&
+		    last->emc_zcal_interval == 0)
+			cnt -= tegra->dram_num * 256;
+
+		val = (timing->emc_mrs_wait_cnt
+			& EMC_MRS_WAIT_CNT_SHORT_WAIT_MASK)
+			>> EMC_MRS_WAIT_CNT_SHORT_WAIT_SHIFT;
+		if (cnt < val)
+			cnt = val;
+
+		val = timing->emc_mrs_wait_cnt
+			& ~EMC_MRS_WAIT_CNT_LONG_WAIT_MASK;
+		val |= (cnt << EMC_MRS_WAIT_CNT_LONG_WAIT_SHIFT)
+			& EMC_MRS_WAIT_CNT_LONG_WAIT_MASK;
+
+		writel(val, tegra->regs + EMC_MRS_WAIT_CNT);
+	}
+
+	val = timing->emc_cfg_2;
+	val &= ~EMC_CFG_2_DIS_STP_OB_CLK_DURING_NON_WR;
+	emc_ccfifo_writel(tegra, val, EMC_CFG_2);
+
+	/* DDR3: Turn off DLL and enter self-refresh */
+
+	if (tegra->dram_type == DRAM_TYPE_DDR3 && dll_change == DLL_CHANGE_OFF)
+		emc_ccfifo_writel(tegra, timing->emc_mode_1, EMC_EMRS);
+
+	/* Disable refresh controller */
+
+	emc_ccfifo_writel(tegra, EMC_REFCTRL_DEV_SEL(tegra->dram_num),
+			  EMC_REFCTRL);
+	if (tegra->dram_type == DRAM_TYPE_DDR3)
+		emc_ccfifo_writel(tegra,
+				  EMC_DRAM_DEV_SEL(tegra->dram_num)
+					| EMC_SELF_REF_CMD_ENABLED,
+				  EMC_SELF_REF);
+
+	/* Flow control marker */
+
+	emc_ccfifo_writel(tegra, 1, EMC_STALL_THEN_EXE_AFTER_CLKCHANGE);
+
+	/* DDR3: Exit self-refresh */
+
+	if (tegra->dram_type == DRAM_TYPE_DDR3)
+		emc_ccfifo_writel(tegra,
+				  EMC_DRAM_DEV_SEL(tegra->dram_num),
+				  EMC_SELF_REF);
+	emc_ccfifo_writel(tegra,
+			  EMC_REFCTRL_DEV_SEL(tegra->dram_num)
+				| EMC_REFCTRL_ENABLE,
+			  EMC_REFCTRL);
+
+	/* Set DRAM mode registers */
+
+	if (tegra->dram_type == DRAM_TYPE_DDR3) {
+		if (timing->emc_mode_1 != last->emc_mode_1)
+			emc_ccfifo_writel(tegra, timing->emc_mode_1, EMC_EMRS);
+		if (timing->emc_mode_2 != last->emc_mode_2)
+			emc_ccfifo_writel(tegra, timing->emc_mode_2, EMC_EMRS2);
+
+		if ((timing->emc_mode_reset != last->emc_mode_reset) ||
+		    dll_change == DLL_CHANGE_ON) {
+			val = timing->emc_mode_reset;
+			if (dll_change == DLL_CHANGE_ON) {
+				val |= EMC_MODE_SET_DLL_RESET;
+				val |= EMC_MODE_SET_LONG_CNT;
+			} else {
+				val &= ~EMC_MODE_SET_DLL_RESET;
+			}
+			emc_ccfifo_writel(tegra, val, EMC_MRS);
+		}
+	} else {
+		if (timing->emc_mode_2 != last->emc_mode_2)
+			emc_ccfifo_writel(tegra, timing->emc_mode_2, EMC_MRW2);
+		if (timing->emc_mode_1 != last->emc_mode_1)
+			emc_ccfifo_writel(tegra, timing->emc_mode_1, EMC_MRW);
+		if (timing->emc_mode_4 != last->emc_mode_4)
+			emc_ccfifo_writel(tegra, timing->emc_mode_4, EMC_MRW4);
+	}
+
+	/*  Issue ZCAL command if turning ZCAL on */
+
+	if (timing->emc_zcal_interval != 0 && last->emc_zcal_interval == 0) {
+		emc_ccfifo_writel(tegra, EMC_ZQ_CAL_LONG_CMD_DEV0, EMC_ZQ_CAL);
+		if (tegra->dram_num > 1)
+			emc_ccfifo_writel(tegra, EMC_ZQ_CAL_LONG_CMD_DEV1,
+					  EMC_ZQ_CAL);
+	}
+
+	/*  Write to RO register to remove stall after change */
+
+	emc_ccfifo_writel(tegra, 0, EMC_CCFIFO_STATUS);
+
+	if (timing->emc_cfg_2 & EMC_CFG_2_DIS_STP_OB_CLK_DURING_NON_WR)
+		emc_ccfifo_writel(tegra, timing->emc_cfg_2, EMC_CFG_2);
+
+	/* Disable AUTO_CAL for clock change */
+
+	emc_seq_disable_auto_cal(tegra);
+
+	/* Read register to wait until programming has settled */
+
+	readl(tegra->regs + EMC_INTSTATUS);
+
+	return 0;
+}
+
+void tegra_emc_complete_timing_change(struct tegra_emc *tegra,
+				      unsigned long rate)
+{
+	struct emc_timing *timing = tegra_emc_find_timing(tegra, rate);
+	struct emc_timing *last = &tegra->last_timing;
+	u32 val;
+
+	if (!timing)
+		return;
+
+	/* Wait until the state machine has settled */
+
+	emc_seq_wait_clkchange(tegra);
+
+	/* Restore AUTO_CAL */
+
+	if (timing->emc_ctt_term_ctrl != last->emc_ctt_term_ctrl)
+		writel(timing->emc_auto_cal_interval,
+		       tegra->regs + EMC_AUTO_CAL_INTERVAL);
+
+	/* Restore dynamic self-refresh */
+
+	if (timing->emc_cfg & EMC_CFG_PWR_MASK)
+		writel(timing->emc_cfg, tegra->regs + EMC_CFG);
+
+	/* Set ZCAL wait count */
+
+	writel(timing->emc_zcal_cnt_long, tegra->regs + EMC_ZCAL_WAIT_CNT);
+
+	/* LPDDR3: Turn off BGBIAS if low frequency */
+
+	if (tegra->dram_type == DRAM_TYPE_LPDDR3 &&
+	    timing->emc_bgbias_ctl0 &
+	      EMC_BGBIAS_CTL0_BIAS0_DSC_E_PWRD_IBIAS_RX) {
+		val = timing->emc_bgbias_ctl0;
+		val |= EMC_BGBIAS_CTL0_BIAS0_DSC_E_PWRD_IBIAS_VTTGEN;
+		val |= EMC_BGBIAS_CTL0_BIAS0_DSC_E_PWRD;
+		writel(val, tegra->regs + EMC_BGBIAS_CTL0);
+	} else {
+		if (tegra->dram_type == DRAM_TYPE_DDR3 &&
+		    readl(tegra->regs + EMC_BGBIAS_CTL0) !=
+		      timing->emc_bgbias_ctl0) {
+			writel(timing->emc_bgbias_ctl0,
+			       tegra->regs + EMC_BGBIAS_CTL0);
+		}
+
+		writel(timing->emc_auto_cal_interval,
+		       tegra->regs + EMC_AUTO_CAL_INTERVAL);
+	}
+
+	/* Wait for timing to settle */
+
+	udelay(2);
+
+	/* Reprogram SEL_DPD_CTRL */
+
+	writel(timing->emc_sel_dpd_ctrl, tegra->regs + EMC_SEL_DPD_CTRL);
+	emc_seq_update_timing(tegra);
+
+	tegra->last_timing = *timing;
+}
+
+/* Initialization and deinitialization */
+
+static void emc_read_current_timing(struct tegra_emc *tegra,
+				    struct emc_timing *timing)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(emc_burst_regs); ++i)
+		timing->emc_burst_data[i] =
+			readl(tegra->regs + emc_burst_regs[i]);
+
+	timing->emc_cfg = readl(tegra->regs + EMC_CFG);
+
+	timing->emc_auto_cal_interval = 0;
+	timing->emc_zcal_cnt_long = 0;
+	timing->emc_mode_1 = 0;
+	timing->emc_mode_2 = 0;
+	timing->emc_mode_4 = 0;
+	timing->emc_mode_reset = 0;
+}
+
+static int emc_init(struct tegra_emc *tegra)
+{
+	tegra->dram_type = readl(tegra->regs + EMC_FBIO_CFG5);
+	tegra->dram_type &= EMC_FBIO_CFG5_DRAM_TYPE_MASK;
+	tegra->dram_type >>= EMC_FBIO_CFG5_DRAM_TYPE_SHIFT;
+
+	tegra->dram_num = tegra_mc_get_emem_device_count(tegra->mc);
+
+	emc_read_current_timing(tegra, &tegra->last_timing);
+
+	return 0;
+}
+
+static int load_one_timing_from_dt(struct tegra_emc *tegra,
+				   struct emc_timing *timing,
+				   struct device_node *node)
+{
+	int err;
+	u32 tmp;
+
+	err = of_property_read_u32(node, "clock-frequency", &tmp);
+	if (err) {
+		dev_err(tegra->dev,
+			"timing %s: failed to read rate\n", node->name);
+		return err;
+	}
+
+	timing->rate = tmp;
+
+	err = of_property_read_u32_array(node, "nvidia,emc-configuration",
+					 timing->emc_burst_data,
+					 ARRAY_SIZE(timing->emc_burst_data));
+	if (err) {
+		dev_err(tegra->dev,
+			"timing %s: failed to read emc burst data\n",
+			node->name);
+		return err;
+	}
+
+#define EMC_READ_PROP(prop, dtprop) { \
+	err = of_property_read_u32(node, dtprop, &timing->prop); \
+	if (err) { \
+		dev_err(tegra->dev, \
+			"timing %s: failed to read " #prop "\n", \
+			node->name); \
+		return err; \
+	} \
+}
+
+	EMC_READ_PROP(emc_auto_cal_config, "nvidia,emc-auto-cal-config")
+	EMC_READ_PROP(emc_auto_cal_config2, "nvidia,emc-auto-cal-config2")
+	EMC_READ_PROP(emc_auto_cal_config3, "nvidia,emc-auto-cal-config3")
+	EMC_READ_PROP(emc_auto_cal_interval, "nvidia,emc-auto-cal-interval")
+	EMC_READ_PROP(emc_bgbias_ctl0, "nvidia,emc-bgbias-ctl0")
+	EMC_READ_PROP(emc_cfg, "nvidia,emc-cfg")
+	EMC_READ_PROP(emc_cfg_2, "nvidia,emc-cfg-2")
+	EMC_READ_PROP(emc_cfg_dig_dll, "nvidia,emc-cfg-dig-dll")
+	EMC_READ_PROP(emc_ctt_term_ctrl, "nvidia,emc-ctt-term-ctrl")
+	EMC_READ_PROP(emc_mode_1, "nvidia,emc-mode-1")
+	EMC_READ_PROP(emc_mode_2, "nvidia,emc-mode-2")
+	EMC_READ_PROP(emc_mode_4, "nvidia,emc-mode-4")
+	EMC_READ_PROP(emc_mode_reset, "nvidia,emc-mode-reset")
+	EMC_READ_PROP(emc_mrs_wait_cnt, "nvidia,emc-mrs-wait-cnt")
+	EMC_READ_PROP(emc_sel_dpd_ctrl, "nvidia,emc-sel-dpd-ctrl")
+	EMC_READ_PROP(emc_xm2dqspadctrl2, "nvidia,emc-xm2dqspadctrl2")
+	EMC_READ_PROP(emc_zcal_cnt_long, "nvidia,emc-zcal-cnt-long")
+	EMC_READ_PROP(emc_zcal_interval, "nvidia,emc-zcal-interval")
+
+#undef EMC_READ_PROP
+
+	return 0;
+}
+
+static int cmp_timings(const void *_a, const void *_b)
+{
+	const struct emc_timing *a = _a;
+	const struct emc_timing *b = _b;
+
+	if (a->rate < b->rate)
+		return -1;
+	else if (a->rate == b->rate)
+		return 0;
+	else
+		return 1;
+}
+
+static int tegra_emc_load_timings_from_dt(struct tegra_emc *tegra,
+					  struct device_node *node)
+{
+	struct device_node *child;
+	struct emc_timing *timing;
+	int child_count = of_get_child_count(node);
+	unsigned int i = 0;
+	int err;
+
+	tegra->timings = devm_kcalloc(tegra->dev, child_count,
+				      sizeof(*timing),
+				      GFP_KERNEL);
+	if (!tegra->timings)
+		return -ENOMEM;
+
+	tegra->num_timings = child_count;
+
+	for_each_child_of_node(node, child) {
+		timing = &tegra->timings[i++];
+
+		err = load_one_timing_from_dt(tegra, timing, child);
+		if (err)
+			return err;
+	}
+
+	sort(tegra->timings, tegra->num_timings, sizeof(*timing),
+	     cmp_timings, NULL);
+
+	return 0;
+}
+
+static const struct of_device_id tegra_emc_of_match[] = {
+	{ .compatible = "nvidia,tegra124-emc" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, tegra_emc_of_match);
+
+static struct device_node *tegra_emc_find_node_by_ram_code(
+		struct device_node *emc_node, u32 ram_code)
+{
+	struct device_node *node;
+	int err;
+
+	for_each_child_of_node(emc_node, node) {
+		u32 value;
+
+		err = of_property_read_u32(node, "nvidia,ram-code", &value);
+		if (err || (value != ram_code)) {
+			of_node_put(node);
+			continue;
+		}
+
+		return node;
+	}
+
+	return NULL;
+}
+
+static int tegra_emc_probe(struct platform_device *pdev)
+{
+	struct tegra_emc *tegra;
+	struct device_node *node;
+	struct platform_device *mc;
+	struct resource *res;
+	u32 ram_code;
+	int err;
+
+	tegra = devm_kzalloc(&pdev->dev, sizeof(*tegra), GFP_KERNEL);
+	if (!tegra)
+		return -ENOMEM;
+
+	tegra->dev = &pdev->dev;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	tegra->regs = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(tegra->regs))
+		return PTR_ERR(tegra->regs);
+
+	node = of_parse_phandle(pdev->dev.of_node,
+				"nvidia,memory-controller", 0);
+	if (!node) {
+		dev_err(&pdev->dev, "could not get memory controller\n");
+		return -ENOENT;
+	}
+
+	mc = of_find_device_by_node(node);
+	if (!mc)
+		return -ENOENT;
+
+	of_node_put(node);
+
+	tegra->mc = platform_get_drvdata(mc);
+	if (!tegra->mc)
+		return -EPROBE_DEFER;
+
+	ram_code = tegra_read_ram_code();
+
+	node = tegra_emc_find_node_by_ram_code(pdev->dev.of_node, ram_code);
+	if (!node) {
+		dev_err(&pdev->dev,
+			 "no memory timings for ram code %u found in DT\n",
+			 ram_code);
+		return -ENOENT;
+	}
+
+	err = tegra_emc_load_timings_from_dt(tegra, node);
+
+	of_node_put(node);
+
+	if (err)
+		return err;
+
+	if (tegra->num_timings == 0) {
+		dev_err(&pdev->dev,
+			 "no memory timings for ram code %u registered\n",
+			 ram_code);
+		return -ENOENT;
+	}
+
+	err = emc_init(tegra);
+	if (err) {
+		dev_err(&pdev->dev, "initialization failed: %d\n", err);
+		return err;
+	}
+
+	platform_set_drvdata(pdev, tegra);
+
+
+	return 0;
+};
+
+static struct platform_driver tegra_emc_driver = {
+	.probe = tegra_emc_probe,
+	.driver = {
+		.name = "tegra-emc",
+		.of_match_table = tegra_emc_of_match,
+		.suppress_bind_attrs = true,
+	},
+};
+
+static int tegra_emc_init(void)
+{
+	return platform_driver_register(&tegra_emc_driver);
+}
+subsys_initcall(tegra_emc_init);
+
+MODULE_AUTHOR("Mikko Perttunen <mperttunen@nvidia.com>");
+MODULE_DESCRIPTION("Tegra124 EMC memory driver");
+MODULE_LICENSE("GPL v2");
diff --git a/include/soc/tegra/emc.h b/include/soc/tegra/emc.h
new file mode 100644
index 0000000..56412d3
--- /dev/null
+++ b/include/soc/tegra/emc.h
@@ -0,0 +1,19 @@
+/*
+ * Copyright (C) 2014 NVIDIA Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __SOC_TEGRA_EMC_H__
+#define __SOC_TEGRA_EMC_H__
+
+struct tegra_emc;
+
+int tegra_emc_prepare_timing_change(struct tegra_emc *tegra,
+				    unsigned long rate);
+void tegra_emc_complete_timing_change(struct tegra_emc *tegra,
+				      unsigned long rate);
+
+#endif /* __SOC_TEGRA_EMC_H__ */
-- 
1.9.3


^ permalink raw reply	[flat|nested] 21+ messages in thread

* [PATCH v6 12/15] clk: Expose clk_hw_reparent to providers
  2015-02-12 14:06 [PATCH v6 00/15] Tegra124 EMC (external memory controller) support Tomeu Vizoso
                   ` (10 preceding siblings ...)
  2015-02-12 14:06 ` [PATCH v6 11/15] memory: tegra: Add EMC (external memory controller) driver Tomeu Vizoso
@ 2015-02-12 14:06 ` Tomeu Vizoso
  2015-02-12 14:06 ` [PATCH v6 13/15] clk: tegra: Add EMC clock driver Tomeu Vizoso
                   ` (2 subsequent siblings)
  14 siblings, 0 replies; 21+ messages in thread
From: Tomeu Vizoso @ 2015-02-12 14:06 UTC (permalink / raw)
  To: linux-tegra
  Cc: Javier Martinez Canillas, Mikko Perttunen, Tomeu Vizoso,
	Mike Turquette, Stephen Boyd, linux-kernel

To be used by clock implementations for switching to a new parent during
rate change.

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
---
 drivers/clk/clk.c            | 8 ++++++++
 include/linux/clk-provider.h | 1 +
 2 files changed, 9 insertions(+)

diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index 4bb2250..db89258 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -1968,6 +1968,14 @@ static void clk_core_reparent(struct clk_core *clk,
 	__clk_recalc_rates(clk, POST_RATE_CHANGE);
 }
 
+void clk_hw_reparent(struct clk_hw *hw, struct clk_hw *new_parent)
+{
+	if (!hw)
+		return;
+
+	clk_core_reparent(hw->core, !new_parent ? NULL : new_parent->core);
+}
+
 /**
  * clk_has_parent - check if a clock is a possible parent for another
  * @clk: clock source
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index 17dd6e9..b1db1cc 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -589,6 +589,7 @@ long __clk_mux_determine_rate_closest(struct clk_hw *hw, unsigned long rate,
 			      unsigned long max_rate,
 			      unsigned long *best_parent_rate,
 			      struct clk_hw **best_parent_p);
+void clk_hw_reparent(struct clk_hw *hw, struct clk_hw *new_parent);
 
 /*
  * FIXME clock api without lock protection
-- 
1.9.3


^ permalink raw reply	[flat|nested] 21+ messages in thread

* [PATCH v6 13/15] clk: tegra: Add EMC clock driver
  2015-02-12 14:06 [PATCH v6 00/15] Tegra124 EMC (external memory controller) support Tomeu Vizoso
                   ` (11 preceding siblings ...)
  2015-02-12 14:06 ` [PATCH v6 12/15] clk: Expose clk_hw_reparent to providers Tomeu Vizoso
@ 2015-02-12 14:06 ` Tomeu Vizoso
  2015-02-12 14:06 ` [PATCH v6 14/15] memory: tegra: Add debugfs entry for getting and setting the EMC rate Tomeu Vizoso
  2015-02-12 14:06 ` [PATCH v6 15/15] clk: tegra: Set the EMC clock as the parent of the MC clock Tomeu Vizoso
  14 siblings, 0 replies; 21+ messages in thread
From: Tomeu Vizoso @ 2015-02-12 14:06 UTC (permalink / raw)
  To: linux-tegra
  Cc: Javier Martinez Canillas, Mikko Perttunen, Mikko Perttunen,
	Tomeu Vizoso, Peter De Schrijver, Prashant Gaikwad,
	Mike Turquette, Stephen Boyd, Stephen Warren, Thierry Reding,
	Alexandre Courbot, linux-kernel

From: Mikko Perttunen <mperttunen@nvidia.com>

The driver is currently only tested on Tegra124 Jetson TK1, but should
work with other Tegra124 boards, provided that correct EMC tables are
provided through the device tree. Older chip models have differing
timing change sequences, so they are not currently supported.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>

---

v6:	* Rebase
	* Use clk_hw_reparent as __clk_reparent isn't any more
	* Simplify emc_round_rate a bit

v5:	* Get a pointer to the EMC driver at runtime, to be used when
	  calling the EMC API.
	* Misc. style fixes
	* Fix logic for rounding down to a high rate

v4:	* Adapt to changes in the OF bindings
	* Improve error handling
	* Fix comment style
	* Make static a few more functions

v3:	* Add some locking to protect the registers that are shared with the MC
	  clock

v2:	* Make sure that the clock is properly registered
	* Bail out early from attempts to set the same rate
---
 drivers/clk/tegra/Makefile       |   2 +-
 drivers/clk/tegra/clk-emc.c      | 528 +++++++++++++++++++++++++++++++++++++++
 drivers/clk/tegra/clk-tegra124.c |   4 +-
 drivers/clk/tegra/clk.h          |   3 +
 4 files changed, 535 insertions(+), 2 deletions(-)
 create mode 100644 drivers/clk/tegra/clk-emc.c

diff --git a/drivers/clk/tegra/Makefile b/drivers/clk/tegra/Makefile
index edb8358..18c28d1 100644
--- a/drivers/clk/tegra/Makefile
+++ b/drivers/clk/tegra/Makefile
@@ -14,5 +14,5 @@ obj-y					+= clk-tegra-super-gen4.o
 obj-$(CONFIG_ARCH_TEGRA_2x_SOC)         += clk-tegra20.o
 obj-$(CONFIG_ARCH_TEGRA_3x_SOC)         += clk-tegra30.o
 obj-$(CONFIG_ARCH_TEGRA_114_SOC)	+= clk-tegra114.o
-obj-$(CONFIG_ARCH_TEGRA_124_SOC)	+= clk-tegra124.o
+obj-$(CONFIG_ARCH_TEGRA_124_SOC)	+= clk-tegra124.o clk-emc.o
 obj-$(CONFIG_ARCH_TEGRA_132_SOC)	+= clk-tegra124.o
diff --git a/drivers/clk/tegra/clk-emc.c b/drivers/clk/tegra/clk-emc.c
new file mode 100644
index 0000000..704fff7
--- /dev/null
+++ b/drivers/clk/tegra/clk-emc.c
@@ -0,0 +1,528 @@
+/*
+ * drivers/clk/tegra/clk-emc.c
+ *
+ * Copyright (c) 2014, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * Author:
+ *	Mikko Perttunen <mperttunen@nvidia.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/sort.h>
+#include <linux/string.h>
+
+#include <soc/tegra/fuse.h>
+#include <soc/tegra/emc.h>
+
+#include "clk.h"
+
+#define CLK_SOURCE_EMC 0x19c
+
+#define CLK_SOURCE_EMC_EMC_2X_CLK_DIVISOR_SHIFT 0
+#define CLK_SOURCE_EMC_EMC_2X_CLK_DIVISOR_MASK 0xff
+#define CLK_SOURCE_EMC_EMC_2X_CLK_DIVISOR(x) (((x) & CLK_SOURCE_EMC_EMC_2X_CLK_DIVISOR_MASK) << \
+					      CLK_SOURCE_EMC_EMC_2X_CLK_DIVISOR_SHIFT)
+
+#define CLK_SOURCE_EMC_EMC_2X_CLK_SRC_SHIFT 29
+#define CLK_SOURCE_EMC_EMC_2X_CLK_SRC_MASK 0x7
+#define CLK_SOURCE_EMC_EMC_2X_CLK_SRC(x) (((x) & CLK_SOURCE_EMC_EMC_2X_CLK_SRC_MASK) << \
+					  CLK_SOURCE_EMC_EMC_2X_CLK_SRC_SHIFT)
+
+static const char const *emc_parent_clk_names[] = {
+	"pll_m", "pll_c", "pll_p", "clk_m", "pll_m_ud",
+	"pll_c2", "pll_c3", "pll_c_ud"
+};
+
+/*
+ * List of clock sources for various parents the EMC clock can have.
+ * When we change the timing to a timing with a parent that has the same
+ * clock source as the current parent, we must first change to a backup
+ * timing that has a different clock source.
+ */
+
+#define EMC_SRC_PLL_M 0
+#define EMC_SRC_PLL_C 1
+#define EMC_SRC_PLL_P 2
+#define EMC_SRC_CLK_M 3
+#define EMC_SRC_PLL_C2 4
+#define EMC_SRC_PLL_C3 5
+
+static const char emc_parent_clk_sources[] = {
+	EMC_SRC_PLL_M, EMC_SRC_PLL_C, EMC_SRC_PLL_P, EMC_SRC_CLK_M,
+	EMC_SRC_PLL_M, EMC_SRC_PLL_C2, EMC_SRC_PLL_C3, EMC_SRC_PLL_C
+};
+
+struct emc_timing {
+	unsigned long rate, parent_rate;
+	u8 parent_index;
+	struct clk *parent;
+	u32 ram_code;
+};
+
+struct tegra_clk_emc {
+	struct clk_hw hw;
+	void __iomem *clk_regs;
+	struct clk *prev_parent;
+	bool changing_timing;
+
+	struct device_node *emc_node;
+	struct tegra_emc *emc;
+
+	int num_timings;
+	struct emc_timing *timings;
+	spinlock_t *lock;
+};
+
+/* Common clock framework callback implementations */
+
+static unsigned long emc_recalc_rate(struct clk_hw *hw,
+				     unsigned long parent_rate)
+{
+	struct tegra_clk_emc *tegra;
+	u32 val, div;
+
+	tegra = container_of(hw, struct tegra_clk_emc, hw);
+
+	/*
+	 * CCF wrongly assumes that the parent won't change during set_rate,
+	 * so get the parent rate explicitly.
+	 */
+	parent_rate = __clk_get_rate(__clk_get_parent(hw->clk));
+
+	val = readl(tegra->clk_regs + CLK_SOURCE_EMC);
+	div = val & CLK_SOURCE_EMC_EMC_2X_CLK_DIVISOR_MASK;
+
+	return parent_rate / (div + 2) * 2;
+}
+
+/*
+ * Rounds up unless no higher rate exists, in which case down. This way is
+ * safer since things have EMC rate floors. Also don't touch parent_rate
+ * since we don't want the CCF to play with our parent clocks.
+ */
+static long emc_round_rate(struct clk_hw *hw, unsigned long rate,
+		    unsigned long *parent_rate)
+{
+	struct tegra_clk_emc *tegra;
+	u8 ram_code = tegra_read_ram_code();
+	struct emc_timing *timing = NULL;
+	int i;
+
+	tegra = container_of(hw, struct tegra_clk_emc, hw);
+
+         for (i = 0; i < tegra->num_timings; i++) {
+                if (tegra->timings[i].ram_code != ram_code)
+                        continue;
+
+                timing = tegra->timings + i;
+
+                if (timing->rate >= rate)
+                        return timing->rate;
+        }
+
+        if (timing)
+                return timing->rate;
+
+	return __clk_get_rate(hw->clk);
+}
+
+static u8 emc_get_parent(struct clk_hw *hw)
+{
+	struct tegra_clk_emc *tegra;
+	u32 val;
+
+	tegra = container_of(hw, struct tegra_clk_emc, hw);
+
+	val = readl(tegra->clk_regs + CLK_SOURCE_EMC);
+
+	return (val >> CLK_SOURCE_EMC_EMC_2X_CLK_SRC_SHIFT)
+		& CLK_SOURCE_EMC_EMC_2X_CLK_SRC_MASK;
+}
+
+static struct tegra_emc *emc_ensure_emc_driver(struct tegra_clk_emc *tegra)
+{
+	struct platform_device *pdev;
+
+	if (tegra->emc)
+		return tegra->emc;
+
+	if (!tegra->emc_node)
+		return NULL;
+
+	pdev = of_find_device_by_node(tegra->emc_node);
+	if (!pdev) {
+		pr_err("%s: could not get external memory controller\n",
+		       __func__);
+		return NULL;
+	}
+
+	of_node_put(tegra->emc_node);
+	tegra->emc_node = NULL;
+
+	tegra->emc = platform_get_drvdata(pdev);
+	if (!tegra->emc) {
+		pr_err("%s: cannot find EMC driver\n", __func__);
+		return NULL;
+	}
+
+	return tegra->emc;
+}
+
+static int emc_set_timing(struct tegra_clk_emc *tegra,
+			  struct emc_timing *timing)
+{
+	int err;
+	u8 div;
+	u32 car_value;
+	unsigned long flags = 0;
+	struct tegra_emc *emc = emc_ensure_emc_driver(tegra);
+
+	if (!emc)
+		return -ENOENT;
+
+	pr_debug("going to rate %ld prate %ld p %s\n", timing->rate,
+		 timing->parent_rate, __clk_get_name(timing->parent));
+
+	if (emc_get_parent(&tegra->hw) == timing->parent_index &&
+	    clk_get_rate(timing->parent) != timing->parent_rate) {
+		BUG();
+		return -EINVAL;
+	}
+
+	tegra->changing_timing = true;
+
+	err = clk_set_rate(timing->parent, timing->parent_rate);
+	if (err) {
+		pr_err("cannot change parent %s rate to %ld: %d\n",
+		       __clk_get_name(timing->parent), timing->parent_rate,
+		       err);
+
+		return err;
+	}
+
+	err = clk_prepare_enable(timing->parent);
+	if (err) {
+		pr_err("cannot enable parent clock: %d\n", err);
+		return err;
+	}
+
+	div = timing->parent_rate / (timing->rate / 2) - 2;
+
+	err = tegra_emc_prepare_timing_change(emc, timing->rate);
+	if (err)
+		return err;
+
+	spin_lock_irqsave(tegra->lock, flags);
+
+	car_value = readl(tegra->clk_regs + CLK_SOURCE_EMC);
+
+	car_value &= ~CLK_SOURCE_EMC_EMC_2X_CLK_SRC(~0);
+	car_value |= CLK_SOURCE_EMC_EMC_2X_CLK_SRC(timing->parent_index);
+
+	car_value &= ~CLK_SOURCE_EMC_EMC_2X_CLK_DIVISOR(~0);
+	car_value |= CLK_SOURCE_EMC_EMC_2X_CLK_DIVISOR(div);
+
+	writel(car_value, tegra->clk_regs + CLK_SOURCE_EMC);
+
+	spin_unlock_irqrestore(tegra->lock, flags);
+
+	tegra_emc_complete_timing_change(emc, timing->rate);
+
+	clk_hw_reparent(&tegra->hw, __clk_get_hw(timing->parent));
+	clk_disable_unprepare(tegra->prev_parent);
+
+	tegra->prev_parent = timing->parent;
+	tegra->changing_timing = false;
+
+	return 0;
+}
+
+/*
+ * Get backup timing to use as an intermediate step when a change between
+ * two timings with the same clock source has been requested. First try to
+ * find a timing with a higher clock rate to avoid a rate below any set rate
+ * floors. If that is not possible, find a lower rate.
+ */
+static struct emc_timing *get_backup_timing(struct tegra_clk_emc *tegra,
+					    int timing_index)
+{
+	int i;
+	u32 ram_code = tegra_read_ram_code();
+	struct emc_timing *timing;
+
+	for (i = timing_index+1; i < tegra->num_timings; i++) {
+		timing = tegra->timings + i;
+		if (timing->ram_code != ram_code)
+			continue;
+
+		if (emc_parent_clk_sources[timing->parent_index] !=
+		    emc_parent_clk_sources[
+		      tegra->timings[timing_index].parent_index])
+			return timing;
+	}
+
+	for (i = timing_index-1; i >= 0; --i) {
+		timing = tegra->timings + i;
+		if (timing->ram_code != ram_code)
+			continue;
+
+		if (emc_parent_clk_sources[timing->parent_index] !=
+		    emc_parent_clk_sources[
+		      tegra->timings[timing_index].parent_index])
+			return timing;
+	}
+
+	return NULL;
+}
+
+static int emc_set_rate(struct clk_hw *hw, unsigned long rate,
+			unsigned long parent_rate)
+{
+	struct tegra_clk_emc *tegra;
+	struct emc_timing *timing = NULL;
+	int i, err;
+	u32 ram_code = tegra_read_ram_code();
+
+	tegra = container_of(hw, struct tegra_clk_emc, hw);
+
+	if (__clk_get_rate(hw->clk) == rate)
+		return 0;
+
+	/*
+	 * When emc_set_timing changes the parent rate, CCF will propagate
+	 * that downward to us, so ignore any set_rate calls while a rate
+	 * change is already going on.
+	 */
+	if (tegra->changing_timing)
+		return 0;
+
+	for (i = 0; i < tegra->num_timings; i++) {
+		if (tegra->timings[i].rate == rate &&
+		    tegra->timings[i].ram_code == ram_code) {
+			timing = tegra->timings + i;
+			break;
+		}
+	}
+
+	if (!timing) {
+		pr_err("cannot switch to rate %ld without emc table\n", rate);
+		return -EINVAL;
+	}
+
+	if (emc_parent_clk_sources[emc_get_parent(hw)] ==
+	    emc_parent_clk_sources[timing->parent_index] &&
+	    clk_get_rate(timing->parent) != timing->parent_rate) {
+		/*
+		 * Parent clock source not changed but parent rate has changed,
+		 * need to temporarily switch to another parent
+		 */
+
+		struct emc_timing *backup_timing;
+
+		backup_timing = get_backup_timing(tegra, i);
+		if (!backup_timing) {
+			pr_err("cannot find backup timing\n");
+			return -EINVAL;
+		}
+
+		pr_debug("using %ld as backup rate when going to %ld\n",
+			 backup_timing->rate, rate);
+
+		err = emc_set_timing(tegra, backup_timing);
+		if (err) {
+			pr_err("cannot set backup timing: %d\n", err);
+			return err;
+		}
+	}
+
+	return emc_set_timing(tegra, timing);
+}
+
+/* Initialization and deinitialization */
+
+static int load_one_timing_from_dt(struct tegra_clk_emc *tegra,
+				   struct emc_timing *timing,
+				   struct device_node *node)
+{
+	int err, i;
+	u32 tmp;
+
+	err = of_property_read_u32(node, "clock-frequency", &tmp);
+	if (err) {
+		pr_err("timing %s: failed to read rate\n", node->full_name);
+		return err;
+	}
+
+	timing->rate = tmp;
+
+	err = of_property_read_u32(node, "nvidia,parent-clock-frequency", &tmp);
+	if (err) {
+		pr_err("timing %s: failed to read parent rate\n",
+		       node->full_name);
+		return err;
+	}
+
+	timing->parent_rate = tmp;
+
+	timing->parent = of_clk_get_by_name(node, "emc-parent");
+	if (IS_ERR(timing->parent)) {
+		pr_err("timing %s: failed to get parent clock\n",
+		       node->full_name);
+		return PTR_ERR(timing->parent);
+	}
+
+	timing->parent_index = 0xff;
+	for (i = 0; i < ARRAY_SIZE(emc_parent_clk_names); i++) {
+		if (!strcmp(emc_parent_clk_names[i],
+			    __clk_get_name(timing->parent))) {
+			timing->parent_index = i;
+			break;
+		}
+	}
+	if (timing->parent_index == 0xff) {
+		pr_err("timing %s: %s is not a valid parent\n",
+		       node->full_name, __clk_get_name(timing->parent));
+		clk_put(timing->parent);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int cmp_timings(const void *_a, const void *_b)
+{
+	const struct emc_timing *a = _a;
+	const struct emc_timing *b = _b;
+
+	if (a->rate < b->rate)
+		return -1;
+	else if (a->rate == b->rate)
+		return 0;
+	else
+		return 1;
+}
+
+static int load_timings_from_dt(struct tegra_clk_emc *tegra,
+				struct device_node *node,
+				u32 ram_code)
+{
+	struct device_node *child;
+	int child_count = of_get_child_count(node);
+	int i = 0, err;
+
+	tegra->timings = kcalloc(child_count, sizeof(struct emc_timing),
+				 GFP_KERNEL);
+	if (!tegra->timings)
+		return -ENOMEM;
+
+	tegra->num_timings = child_count;
+
+	for_each_child_of_node(node, child) {
+		struct emc_timing *timing = tegra->timings + (i++);
+
+		err = load_one_timing_from_dt(tegra, timing, child);
+		if (err)
+			return err;
+
+		timing->ram_code = ram_code;
+	}
+
+	sort(tegra->timings, tegra->num_timings, sizeof(struct emc_timing),
+	     cmp_timings, NULL);
+
+	return 0;
+}
+
+static const struct clk_ops tegra_clk_emc_ops = {
+	.recalc_rate = emc_recalc_rate,
+	.round_rate = emc_round_rate,
+	.set_rate = emc_set_rate,
+	.get_parent = emc_get_parent,
+};
+
+struct clk *tegra_emc_init(struct device_node *np, void __iomem *clk_regs,
+			   spinlock_t *lock)
+{
+	struct tegra_clk_emc *tegra;
+	struct clk *clk;
+	struct clk_init_data init;
+	struct device_node *node;
+	u32 node_ram_code;
+	int err;
+
+	tegra = kcalloc(1, sizeof(*tegra), GFP_KERNEL);
+	if (!tegra)
+		return ERR_PTR(-ENOMEM);
+
+	tegra->clk_regs = clk_regs;
+	tegra->lock = lock;
+
+	tegra->num_timings = 0;
+
+	for_each_child_of_node(np, node) {
+		err = of_property_read_u32(node, "nvidia,ram-code",
+					   &node_ram_code);
+		if (err) {
+			of_node_put(node);
+			continue;
+		}
+
+		/*
+		 * Store timings for all ram codes as we cannot read the
+		 * fuses until the apbmisc driver is loaded.
+		 */
+		err = load_timings_from_dt(tegra, node, node_ram_code);
+		if (err)
+			return ERR_PTR(err);
+		of_node_put(node);
+		break;
+	}
+
+	if (tegra->num_timings == 0)
+		pr_warn("%s: no memory timings registered\n", __func__);
+
+	tegra->emc_node = of_parse_phandle(np,
+			"nvidia,external-memory-controller", 0);
+	if (!tegra->emc_node)
+		pr_warn("%s: couldn't find node for EMC driver\n", __func__);
+
+	init.name = "emc";
+	init.ops = &tegra_clk_emc_ops;
+	init.flags = 0;
+	init.parent_names = emc_parent_clk_names;
+	init.num_parents = ARRAY_SIZE(emc_parent_clk_names);
+
+	tegra->hw.init = &init;
+
+	clk = clk_register(NULL, &tegra->hw);
+	if (IS_ERR(clk))
+		return clk;
+
+	tegra->prev_parent = clk_get_parent_by_index(
+		tegra->hw.clk, emc_get_parent(&tegra->hw));
+	tegra->changing_timing = false;
+
+	/* Allow debugging tools to see the EMC clock */
+	clk_register_clkdev(clk, "emc", "tegra-clk-debug");
+
+	clk_prepare_enable(clk);
+
+	return clk;
+};
diff --git a/drivers/clk/tegra/clk-tegra124.c b/drivers/clk/tegra/clk-tegra124.c
index d370134..8a813c4 100644
--- a/drivers/clk/tegra/clk-tegra124.c
+++ b/drivers/clk/tegra/clk-tegra124.c
@@ -1383,7 +1383,6 @@ static struct tegra_clk_init_table common_init_table[] __initdata = {
 	{TEGRA124_CLK_XUSB_HOST_SRC, TEGRA124_CLK_PLL_RE_OUT, 112000000, 0},
 	{TEGRA124_CLK_SATA, TEGRA124_CLK_PLL_P, 104000000, 0},
 	{TEGRA124_CLK_SATA_OOB, TEGRA124_CLK_PLL_P, 204000000, 0},
-	{TEGRA124_CLK_EMC, TEGRA124_CLK_CLK_MAX, 0, 1},
 	{TEGRA124_CLK_MSELECT, TEGRA124_CLK_CLK_MAX, 0, 1},
 	{TEGRA124_CLK_CSITE, TEGRA124_CLK_CLK_MAX, 0, 1},
 	{TEGRA124_CLK_TSENSOR, TEGRA124_CLK_CLK_M, 400000, 0},
@@ -1504,6 +1503,9 @@ static void __init tegra124_132_clock_init_post(struct device_node *np)
 	tegra_super_clk_gen4_init(clk_base, pmc_base, tegra124_clks,
 				  &pll_x_params);
 	tegra_add_of_provider(np);
+
+	clks[TEGRA124_CLK_EMC] = tegra_emc_init(np, clk_base, &emc_lock);
+
 	tegra_register_devclks(devclks, ARRAY_SIZE(devclks));
 
 	tegra_cpu_car_ops = &tegra124_cpu_car_ops;
diff --git a/drivers/clk/tegra/clk.h b/drivers/clk/tegra/clk.h
index 4e458aa..097f972 100644
--- a/drivers/clk/tegra/clk.h
+++ b/drivers/clk/tegra/clk.h
@@ -623,6 +623,9 @@ void tegra_super_clk_gen4_init(void __iomem *clk_base,
 			void __iomem *pmc_base, struct tegra_clk *tegra_clks,
 			struct tegra_clk_pll_params *pll_params);
 
+struct clk *tegra_emc_init(struct device_node *np, void __iomem *clk_regs,
+			   spinlock_t *lock);
+
 void tegra114_clock_tune_cpu_trimmers_high(void);
 void tegra114_clock_tune_cpu_trimmers_low(void);
 void tegra114_clock_tune_cpu_trimmers_init(void);
-- 
1.9.3


^ permalink raw reply	[flat|nested] 21+ messages in thread

* [PATCH v6 14/15] memory: tegra: Add debugfs entry for getting and setting the EMC rate
  2015-02-12 14:06 [PATCH v6 00/15] Tegra124 EMC (external memory controller) support Tomeu Vizoso
                   ` (12 preceding siblings ...)
  2015-02-12 14:06 ` [PATCH v6 13/15] clk: tegra: Add EMC clock driver Tomeu Vizoso
@ 2015-02-12 14:06 ` Tomeu Vizoso
  2015-02-12 14:06 ` [PATCH v6 15/15] clk: tegra: Set the EMC clock as the parent of the MC clock Tomeu Vizoso
  14 siblings, 0 replies; 21+ messages in thread
From: Tomeu Vizoso @ 2015-02-12 14:06 UTC (permalink / raw)
  To: linux-tegra
  Cc: Javier Martinez Canillas, Mikko Perttunen, Mikko Perttunen,
	Tomeu Vizoso, Stephen Warren, Thierry Reding, Alexandre Courbot,
	linux-kernel

From: Mikko Perttunen <mperttunen@nvidia.com>

Will be very useful when tuning memory scaling.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
---
 drivers/memory/tegra/tegra124-emc.c | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/drivers/memory/tegra/tegra124-emc.c b/drivers/memory/tegra/tegra124-emc.c
index 7036ad5..d4817b6 100644
--- a/drivers/memory/tegra/tegra124-emc.c
+++ b/drivers/memory/tegra/tegra124-emc.c
@@ -18,6 +18,7 @@
 #include <linux/clk-provider.h>
 #include <linux/clk.h>
 #include <linux/clkdev.h>
+#include <linux/debugfs.h>
 #include <linux/delay.h>
 #include <linux/module.h>
 #include <linux/of_address.h>
@@ -1036,6 +1037,38 @@ static struct device_node *tegra_emc_find_node_by_ram_code(
 	return NULL;
 }
 
+/* Debugfs entry */
+
+static int emc_debug_rate_get(void *data, u64 *rate)
+{
+	struct clk *c = data;
+
+	*rate = clk_get_rate(c);
+
+	return 0;
+}
+
+static int emc_debug_rate_set(void *data, u64 rate)
+{
+	struct clk *c = data;
+
+	return clk_set_rate(c, rate);
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(emc_debug_rate_fops, emc_debug_rate_get,
+			emc_debug_rate_set, "%lld\n");
+
+void emc_debugfs_init(void)
+{
+	struct dentry *d;
+
+	d = debugfs_create_file("emc_rate", S_IRUGO | S_IWUSR, NULL,
+				clk_get_sys("tegra-clk-debug", "emc"),
+				&emc_debug_rate_fops);
+	if (!d)
+		pr_warn("failed to create debugfs entries\n");
+}
+
 static int tegra_emc_probe(struct platform_device *pdev)
 {
 	struct tegra_emc *tegra;
@@ -1106,6 +1139,8 @@ static int tegra_emc_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, tegra);
 
 
+	emc_debugfs_init();
+
 	return 0;
 };
 
-- 
1.9.3


^ permalink raw reply	[flat|nested] 21+ messages in thread

* [PATCH v6 15/15] clk: tegra: Set the EMC clock as the parent of the MC clock
  2015-02-12 14:06 [PATCH v6 00/15] Tegra124 EMC (external memory controller) support Tomeu Vizoso
                   ` (13 preceding siblings ...)
  2015-02-12 14:06 ` [PATCH v6 14/15] memory: tegra: Add debugfs entry for getting and setting the EMC rate Tomeu Vizoso
@ 2015-02-12 14:06 ` Tomeu Vizoso
  14 siblings, 0 replies; 21+ messages in thread
From: Tomeu Vizoso @ 2015-02-12 14:06 UTC (permalink / raw)
  To: linux-tegra
  Cc: Javier Martinez Canillas, Mikko Perttunen, Tomeu Vizoso,
	Peter De Schrijver, Prashant Gaikwad, Mike Turquette,
	Stephen Boyd, Stephen Warren, Thierry Reding, Alexandre Courbot,
	linux-kernel

On Tegra124, as we now have a proper driver for the EMC.

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
---
 drivers/clk/tegra/clk-tegra124.c | 13 +------------
 1 file changed, 1 insertion(+), 12 deletions(-)

diff --git a/drivers/clk/tegra/clk-tegra124.c b/drivers/clk/tegra/clk-tegra124.c
index 8a813c4..5c13ba4 100644
--- a/drivers/clk/tegra/clk-tegra124.c
+++ b/drivers/clk/tegra/clk-tegra124.c
@@ -152,11 +152,6 @@ static unsigned long tegra124_input_freq[] = {
 	[12] = 260000000,
 };
 
-static const char *mux_pllmcp_clkm[] = {
-	"pll_m", "pll_c", "pll_p", "clk_m", "pll_m_ud", "pll_c2", "pll_c3",
-};
-#define mux_pllmcp_clkm_idx NULL
-
 static struct div_nmp pllxc_nmp = {
 	.divm_shift = 0,
 	.divm_width = 8,
@@ -1121,13 +1116,7 @@ static __init void tegra124_periph_clk_init(void __iomem *clk_base,
 					     0, 82, periph_clk_enb_refcnt);
 	clks[TEGRA124_CLK_DSIB] = clk;
 
-	/* emc mux */
-	clk = clk_register_mux(NULL, "emc_mux", mux_pllmcp_clkm,
-			       ARRAY_SIZE(mux_pllmcp_clkm), 0,
-			       clk_base + CLK_SOURCE_EMC,
-			       29, 3, 0, &emc_lock);
-
-	clk = tegra_clk_register_mc("mc", "emc_mux", clk_base + CLK_SOURCE_EMC,
+	clk = tegra_clk_register_mc("mc", "emc", clk_base + CLK_SOURCE_EMC,
 				    &emc_lock);
 	clks[TEGRA124_CLK_MC] = clk;
 
-- 
1.9.3


^ permalink raw reply	[flat|nested] 21+ messages in thread

* Re: [PATCH v6 03/15] soc/tegra: Add ram code reader helper
  2015-02-12 14:06 ` [PATCH v6 03/15] soc/tegra: Add ram code reader helper Tomeu Vizoso
@ 2015-03-02  8:46   ` Alexandre Courbot
  2015-03-02  9:52     ` Mikko Perttunen
  0 siblings, 1 reply; 21+ messages in thread
From: Alexandre Courbot @ 2015-03-02  8:46 UTC (permalink / raw)
  To: Tomeu Vizoso
  Cc: linux-tegra, Javier Martinez Canillas, Mikko Perttunen,
	Mikko Perttunen, Stephen Warren, Thierry Reding,
	Peter De Schrijver, Linux Kernel Mailing List

On Thu, Feb 12, 2015 at 11:06 PM, Tomeu Vizoso
<tomeu.vizoso@collabora.com> wrote:
> From: Mikko Perttunen <mperttunen@nvidia.com>
>
> Needed for the EMC and MC drivers to know what timings from the DT to use.
>
> Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
> Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
>
> ---
>
> v4: Replace magic number with PMC_STRAPPING_OPT_A_RAM_CODE_SHIFT
> ---
>  drivers/soc/tegra/fuse/tegra-apbmisc.c | 19 +++++++++++++++++++
>  include/soc/tegra/fuse.h               |  1 +
>  2 files changed, 20 insertions(+)
>
> diff --git a/drivers/soc/tegra/fuse/tegra-apbmisc.c b/drivers/soc/tegra/fuse/tegra-apbmisc.c
> index 3bf5aba..dc96a62 100644
> --- a/drivers/soc/tegra/fuse/tegra-apbmisc.c
> +++ b/drivers/soc/tegra/fuse/tegra-apbmisc.c
> @@ -28,8 +28,13 @@
>  #define APBMISC_SIZE   0x64
>  #define FUSE_SKU_INFO  0x10
>
> +#define PMC_STRAPPING_OPT_A_RAM_CODE_SHIFT     4
> +#define PMC_STRAPPING_OPT_A_RAM_CODE_MASK_LONG (0xf << PMC_STRAPPING_OPT_A_RAM_CODE_SHIFT)
> +#define PMC_STRAPPING_OPT_A_RAM_CODE_MASK_SHORT        (0x3 << PMC_STRAPPING_OPT_A_RAM_CODE_SHIFT)

I think you are slightly over 80 chars here.

> +
>  static void __iomem *apbmisc_base;
>  static void __iomem *strapping_base;
> +static bool          long_ram_code;
>
>  u32 tegra_read_chipid(void)
>  {
> @@ -54,6 +59,18 @@ u32 tegra_read_straps(void)
>                 return 0;
>  }
>
> +u32 tegra_read_ram_code(void)
> +{
> +       u32 straps = tegra_read_straps();
> +
> +       if (long_ram_code)
> +               straps &= PMC_STRAPPING_OPT_A_RAM_CODE_MASK_LONG;
> +       else
> +               straps &= PMC_STRAPPING_OPT_A_RAM_CODE_MASK_SHORT;
> +
> +       return straps >> PMC_STRAPPING_OPT_A_RAM_CODE_SHIFT;
> +}
> +
>  static const struct of_device_id apbmisc_match[] __initconst = {
>         { .compatible = "nvidia,tegra20-apbmisc", },
>         {},
> @@ -112,4 +129,6 @@ void __init tegra_init_apbmisc(void)
>         strapping_base = of_iomap(np, 1);
>         if (!strapping_base)
>                 pr_err("ioremap tegra strapping_base failed\n");
> +
> +       long_ram_code = of_property_read_bool(np, "nvidia,long-ram-code");

Is this long-ram property chip-dependent? If so, couldn't we just use
the chip ID or matched compatible string to decide whether the RAM
code length, instead of having a dedicated property for it?

^ permalink raw reply	[flat|nested] 21+ messages in thread

* Re: [PATCH v6 06/15] of: Add Tegra124 EMC bindings
  2015-02-12 14:06 ` [PATCH v6 06/15] of: Add Tegra124 EMC bindings Tomeu Vizoso
@ 2015-03-02  8:47   ` Alexandre Courbot
  2015-03-02  9:51     ` Mikko Perttunen
  0 siblings, 1 reply; 21+ messages in thread
From: Alexandre Courbot @ 2015-03-02  8:47 UTC (permalink / raw)
  To: Tomeu Vizoso
  Cc: linux-tegra, Javier Martinez Canillas, Mikko Perttunen,
	Mikko Perttunen, Rob Herring, Pawel Moll, Mark Rutland,
	Ian Campbell, Kumar Gala, Stephen Warren, Thierry Reding,
	devicetree, Linux Kernel Mailing List

On Thu, Feb 12, 2015 at 11:06 PM, Tomeu Vizoso
<tomeu.vizoso@collabora.com> wrote:
> From: Mikko Perttunen <mperttunen@nvidia.com>
>
> Add binding documentation for the nvidia,tegra124-emc device tree node.
>
> Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
> Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
>
> ---
>
> v5:     * Add a short description for each of the register properties
>
> v4:     * Remove mandatory naming of the timings subnode
>         * Remove constraint on the unit-address of the timings and timing subnodes
>         * Add some more information about nvidia,emc-configuration
>         * Make the example complete
>
> v2:     * Specify the unit addresses for the timings and timing nodes
> ---
>  .../bindings/memory-controllers/tegra-emc.txt      | 379 +++++++++++++++++++++
>  1 file changed, 379 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt
>
> diff --git a/Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt b/Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt
> new file mode 100644
> index 0000000..da923b1
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt
> @@ -0,0 +1,379 @@
> +NVIDIA Tegra124 SoC EMC (external memory controller)
> +====================================================
> +
> +Required properties :
> +- compatible : Should be "nvidia,tegra124-emc".
> +- reg : physical base address and length of the controller's registers.
> +- nvidia,memory-controller : phandle of the MC driver.
> +
> +The node should contain a "emc-timings" subnode for each supported RAM type (see field RAM_CODE in
> +register PMC_STRAPPING_OPT_A), with its unit address being its RAM_CODE.
> +
> +Required properties for "emc-timings" nodes :
> +- nvidia,ram-code : Should contain the value of RAM_CODE this timing set is used for.
> +
> +Each "emc-timings" node should contain a "timing" subnode for every supported EMC clock rate. The
> +"timing" subnodes should have the clock rate in Hz as their unit address.
> +
> +Required properties for "timing" nodes :
> +- clock-frequency : Should contain the memory clock rate in Hz.
> +- The following properties contain EMC timing characterization values (specified in the board
> +documentation) :
> +  - nvidia,emc-auto-cal-config : EMC_AUTO_CAL_CONFIG
> +  - nvidia,emc-auto-cal-config2 : EMC_AUTO_CAL_CONFIG2
> +  - nvidia,emc-auto-cal-config3 : EMC_AUTO_CAL_CONFIG3
> +  - nvidia,emc-auto-cal-interval : EMC_AUTO_CAL_INTERVAL
> +  - nvidia,emc-bgbias-ctl0 : EMC_BGBIAS_CTL0
> +  - nvidia,emc-cfg : EMC_CFG
> +  - nvidia,emc-cfg-2 : EMC_CFG_2
> +  - nvidia,emc-cfg-dig-dll : EMC_CFG_DIG_DLL
> +  - nvidia,emc-ctt-term-ctrl : EMC_CTT_TERM_CTRL
> +  - nvidia,emc-mode-1 : Mode Register 1
> +  - nvidia,emc-mode-2 : Mode Register 2
> +  - nvidia,emc-mode-4 : Mode Register 4
> +  - nvidia,emc-mode-reset : Mode Register 0
> +  - nvidia,emc-mrs-wait-cnt : EMC_MRS_WAIT_CNT
> +  - nvidia,emc-sel-dpd-ctrl : EMC_SEL_DPD_CTRL
> +  - nvidia,emc-xm2dqspadctrl2 : EMC_XM2DQSPADCTRL2
> +  - nvidia,emc-zcal-cnt-long : EMC_ZCAL_WAIT_CNT
> +  - nvidia,emc-zcal-interval : EMC_ZCAL_INTERVAL
> +- nvidia,emc-configuration : EMC timing characterization data. These are the registers (see section
> +"15.6.2 EMC Registers" in the TRM) whose values need to be specified, according to the board
> +documentation:

I'm a little bit confused by this. On the one hand, some registers are
defined by dedicated DT properties, and on the other some are simply
specified in the nvidia,emc-configuration array. I guess the rationale
for this is to isolate the registers whose value may control the
driver vs. those that simply needs to be written as-is.

But in this case, why are some registers (like EMC_CFG_DIG_DLL)
present in both lists, sometimes with different values? In the case of
EMC_CFG_DIG_DLL, I also see that the read value of
"nvidia,emc-cfg-dig-dll" seems to never be used anywhere in
tegra124-emc.c. Should this property exist at all? Note that I have
only checked this one, there might be others in the same case.

Or maybe I completely misunderstood the intent here, in which case,
please enlighten me. :)

^ permalink raw reply	[flat|nested] 21+ messages in thread

* Re: [PATCH v6 06/15] of: Add Tegra124 EMC bindings
  2015-03-02  8:47   ` Alexandre Courbot
@ 2015-03-02  9:51     ` Mikko Perttunen
  0 siblings, 0 replies; 21+ messages in thread
From: Mikko Perttunen @ 2015-03-02  9:51 UTC (permalink / raw)
  To: Alexandre Courbot, Tomeu Vizoso
  Cc: linux-tegra, Javier Martinez Canillas, Mikko Perttunen,
	Rob Herring, Pawel Moll, Mark Rutland, Ian Campbell, Kumar Gala,
	Stephen Warren, Thierry Reding, devicetree,
	Linux Kernel Mailing List

On 03/02/2015 10:47 AM, Alexandre Courbot wrote:
> On Thu, Feb 12, 2015 at 11:06 PM, Tomeu Vizoso
> <tomeu.vizoso@collabora.com> wrote:
>> From: Mikko Perttunen <mperttunen@nvidia.com>
>>
>> Add binding documentation for the nvidia,tegra124-emc device tree node.
>>
>> Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
>> Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
>>
>> ---
>>
>> v5:     * Add a short description for each of the register properties
>>
>> v4:     * Remove mandatory naming of the timings subnode
>>          * Remove constraint on the unit-address of the timings and timing subnodes
>>          * Add some more information about nvidia,emc-configuration
>>          * Make the example complete
>>
>> v2:     * Specify the unit addresses for the timings and timing nodes
>> ---
>>   .../bindings/memory-controllers/tegra-emc.txt      | 379 +++++++++++++++++++++
>>   1 file changed, 379 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt
>>
>> diff --git a/Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt b/Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt
>> new file mode 100644
>> index 0000000..da923b1
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt
>> @@ -0,0 +1,379 @@
>> +NVIDIA Tegra124 SoC EMC (external memory controller)
>> +====================================================
>> +
>> +Required properties :
>> +- compatible : Should be "nvidia,tegra124-emc".
>> +- reg : physical base address and length of the controller's registers.
>> +- nvidia,memory-controller : phandle of the MC driver.
>> +
>> +The node should contain a "emc-timings" subnode for each supported RAM type (see field RAM_CODE in
>> +register PMC_STRAPPING_OPT_A), with its unit address being its RAM_CODE.
>> +
>> +Required properties for "emc-timings" nodes :
>> +- nvidia,ram-code : Should contain the value of RAM_CODE this timing set is used for.
>> +
>> +Each "emc-timings" node should contain a "timing" subnode for every supported EMC clock rate. The
>> +"timing" subnodes should have the clock rate in Hz as their unit address.
>> +
>> +Required properties for "timing" nodes :
>> +- clock-frequency : Should contain the memory clock rate in Hz.
>> +- The following properties contain EMC timing characterization values (specified in the board
>> +documentation) :
>> +  - nvidia,emc-auto-cal-config : EMC_AUTO_CAL_CONFIG
>> +  - nvidia,emc-auto-cal-config2 : EMC_AUTO_CAL_CONFIG2
>> +  - nvidia,emc-auto-cal-config3 : EMC_AUTO_CAL_CONFIG3
>> +  - nvidia,emc-auto-cal-interval : EMC_AUTO_CAL_INTERVAL
>> +  - nvidia,emc-bgbias-ctl0 : EMC_BGBIAS_CTL0
>> +  - nvidia,emc-cfg : EMC_CFG
>> +  - nvidia,emc-cfg-2 : EMC_CFG_2
>> +  - nvidia,emc-cfg-dig-dll : EMC_CFG_DIG_DLL
>> +  - nvidia,emc-ctt-term-ctrl : EMC_CTT_TERM_CTRL
>> +  - nvidia,emc-mode-1 : Mode Register 1
>> +  - nvidia,emc-mode-2 : Mode Register 2
>> +  - nvidia,emc-mode-4 : Mode Register 4
>> +  - nvidia,emc-mode-reset : Mode Register 0
>> +  - nvidia,emc-mrs-wait-cnt : EMC_MRS_WAIT_CNT
>> +  - nvidia,emc-sel-dpd-ctrl : EMC_SEL_DPD_CTRL
>> +  - nvidia,emc-xm2dqspadctrl2 : EMC_XM2DQSPADCTRL2
>> +  - nvidia,emc-zcal-cnt-long : EMC_ZCAL_WAIT_CNT
>> +  - nvidia,emc-zcal-interval : EMC_ZCAL_INTERVAL
>> +- nvidia,emc-configuration : EMC timing characterization data. These are the registers (see section
>> +"15.6.2 EMC Registers" in the TRM) whose values need to be specified, according to the board
>> +documentation:
>
> I'm a little bit confused by this. On the one hand, some registers are
> defined by dedicated DT properties, and on the other some are simply
> specified in the nvidia,emc-configuration array. I guess the rationale
> for this is to isolate the registers whose value may control the
> driver vs. those that simply needs to be written as-is.
>
> But in this case, why are some registers (like EMC_CFG_DIG_DLL)
> present in both lists, sometimes with different values? In the case of
> EMC_CFG_DIG_DLL, I also see that the read value of
> "nvidia,emc-cfg-dig-dll" seems to never be used anywhere in
> tegra124-emc.c. Should this property exist at all? Note that I have
> only checked this one, there might be others in the same case.
>
> Or maybe I completely misunderstood the intent here, in which case,
> please enlighten me. :)
>

Well spotted! Looks like the nvidia,emc-cfg-dig-dll property should not 
be there. The list was essentially copied from the downstream kernel; 
looks like there the list of variables was probably based on that of 
Tegra148, where the cfg-dig-dll seems to be used. (The downstream 
Tegra124 does not use it.) Should check this for the other properties as 
well.

Mikko


^ permalink raw reply	[flat|nested] 21+ messages in thread

* Re: [PATCH v6 03/15] soc/tegra: Add ram code reader helper
  2015-03-02  8:46   ` Alexandre Courbot
@ 2015-03-02  9:52     ` Mikko Perttunen
  2015-03-09 14:36       ` Tomeu Vizoso
  0 siblings, 1 reply; 21+ messages in thread
From: Mikko Perttunen @ 2015-03-02  9:52 UTC (permalink / raw)
  To: Alexandre Courbot, Tomeu Vizoso
  Cc: linux-tegra, Javier Martinez Canillas, Mikko Perttunen,
	Stephen Warren, Thierry Reding, Peter De Schrijver,
	Linux Kernel Mailing List

On 03/02/2015 10:46 AM, Alexandre Courbot wrote:
> On Thu, Feb 12, 2015 at 11:06 PM, Tomeu Vizoso
> <tomeu.vizoso@collabora.com> wrote:
>> From: Mikko Perttunen <mperttunen@nvidia.com>
>>
>> Needed for the EMC and MC drivers to know what timings from the DT to use.
>>
>> Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
>> Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
>>
>> ---
>>
>> v4: Replace magic number with PMC_STRAPPING_OPT_A_RAM_CODE_SHIFT
>> ---
>>   drivers/soc/tegra/fuse/tegra-apbmisc.c | 19 +++++++++++++++++++
>>   include/soc/tegra/fuse.h               |  1 +
>>   2 files changed, 20 insertions(+)
>>
>> diff --git a/drivers/soc/tegra/fuse/tegra-apbmisc.c b/drivers/soc/tegra/fuse/tegra-apbmisc.c
>> index 3bf5aba..dc96a62 100644
>> --- a/drivers/soc/tegra/fuse/tegra-apbmisc.c
>> +++ b/drivers/soc/tegra/fuse/tegra-apbmisc.c
>> @@ -28,8 +28,13 @@
>>   #define APBMISC_SIZE   0x64
>>   #define FUSE_SKU_INFO  0x10
>>
>> +#define PMC_STRAPPING_OPT_A_RAM_CODE_SHIFT     4
>> +#define PMC_STRAPPING_OPT_A_RAM_CODE_MASK_LONG (0xf << PMC_STRAPPING_OPT_A_RAM_CODE_SHIFT)
>> +#define PMC_STRAPPING_OPT_A_RAM_CODE_MASK_SHORT        (0x3 << PMC_STRAPPING_OPT_A_RAM_CODE_SHIFT)
>
> I think you are slightly over 80 chars here.
>
>> +
>>   static void __iomem *apbmisc_base;
>>   static void __iomem *strapping_base;
>> +static bool          long_ram_code;
>>
>>   u32 tegra_read_chipid(void)
>>   {
>> @@ -54,6 +59,18 @@ u32 tegra_read_straps(void)
>>                  return 0;
>>   }
>>
>> +u32 tegra_read_ram_code(void)
>> +{
>> +       u32 straps = tegra_read_straps();
>> +
>> +       if (long_ram_code)
>> +               straps &= PMC_STRAPPING_OPT_A_RAM_CODE_MASK_LONG;
>> +       else
>> +               straps &= PMC_STRAPPING_OPT_A_RAM_CODE_MASK_SHORT;
>> +
>> +       return straps >> PMC_STRAPPING_OPT_A_RAM_CODE_SHIFT;
>> +}
>> +
>>   static const struct of_device_id apbmisc_match[] __initconst = {
>>          { .compatible = "nvidia,tegra20-apbmisc", },
>>          {},
>> @@ -112,4 +129,6 @@ void __init tegra_init_apbmisc(void)
>>          strapping_base = of_iomap(np, 1);
>>          if (!strapping_base)
>>                  pr_err("ioremap tegra strapping_base failed\n");
>> +
>> +       long_ram_code = of_property_read_bool(np, "nvidia,long-ram-code");
>
> Is this long-ram property chip-dependent? If so, couldn't we just use
> the chip ID or matched compatible string to decide whether the RAM
> code length, instead of having a dedicated property for it?
>

I am under the impression that it is board-specific.

Mikko


^ permalink raw reply	[flat|nested] 21+ messages in thread

* Re: [PATCH v6 03/15] soc/tegra: Add ram code reader helper
  2015-03-02  9:52     ` Mikko Perttunen
@ 2015-03-09 14:36       ` Tomeu Vizoso
  0 siblings, 0 replies; 21+ messages in thread
From: Tomeu Vizoso @ 2015-03-09 14:36 UTC (permalink / raw)
  To: Mikko Perttunen
  Cc: Alexandre Courbot, linux-tegra, Javier Martinez Canillas,
	Mikko Perttunen, Stephen Warren, Thierry Reding,
	Peter De Schrijver, Linux Kernel Mailing List

On 2 March 2015 at 10:52, Mikko Perttunen <mikko.perttunen@kapsi.fi> wrote:
> On 03/02/2015 10:46 AM, Alexandre Courbot wrote:
>>
>> On Thu, Feb 12, 2015 at 11:06 PM, Tomeu Vizoso
>> <tomeu.vizoso@collabora.com> wrote:
>>>
>>> From: Mikko Perttunen <mperttunen@nvidia.com>
>>>
>>> Needed for the EMC and MC drivers to know what timings from the DT to
>>> use.
>>>
>>> Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
>>> Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
>>>
>>> ---
>>>
>>> v4: Replace magic number with PMC_STRAPPING_OPT_A_RAM_CODE_SHIFT
>>> ---
>>>   drivers/soc/tegra/fuse/tegra-apbmisc.c | 19 +++++++++++++++++++
>>>   include/soc/tegra/fuse.h               |  1 +
>>>   2 files changed, 20 insertions(+)
>>>
>>> diff --git a/drivers/soc/tegra/fuse/tegra-apbmisc.c
>>> b/drivers/soc/tegra/fuse/tegra-apbmisc.c
>>> index 3bf5aba..dc96a62 100644
>>> --- a/drivers/soc/tegra/fuse/tegra-apbmisc.c
>>> +++ b/drivers/soc/tegra/fuse/tegra-apbmisc.c
>>> @@ -28,8 +28,13 @@
>>>   #define APBMISC_SIZE   0x64
>>>   #define FUSE_SKU_INFO  0x10
>>>
>>> +#define PMC_STRAPPING_OPT_A_RAM_CODE_SHIFT     4
>>> +#define PMC_STRAPPING_OPT_A_RAM_CODE_MASK_LONG (0xf <<
>>> PMC_STRAPPING_OPT_A_RAM_CODE_SHIFT)
>>> +#define PMC_STRAPPING_OPT_A_RAM_CODE_MASK_SHORT        (0x3 <<
>>> PMC_STRAPPING_OPT_A_RAM_CODE_SHIFT)
>>
>>
>> I think you are slightly over 80 chars here.
>>
>>> +
>>>   static void __iomem *apbmisc_base;
>>>   static void __iomem *strapping_base;
>>> +static bool          long_ram_code;
>>>
>>>   u32 tegra_read_chipid(void)
>>>   {
>>> @@ -54,6 +59,18 @@ u32 tegra_read_straps(void)
>>>                  return 0;
>>>   }
>>>
>>> +u32 tegra_read_ram_code(void)
>>> +{
>>> +       u32 straps = tegra_read_straps();
>>> +
>>> +       if (long_ram_code)
>>> +               straps &= PMC_STRAPPING_OPT_A_RAM_CODE_MASK_LONG;
>>> +       else
>>> +               straps &= PMC_STRAPPING_OPT_A_RAM_CODE_MASK_SHORT;
>>> +
>>> +       return straps >> PMC_STRAPPING_OPT_A_RAM_CODE_SHIFT;
>>> +}
>>> +
>>>   static const struct of_device_id apbmisc_match[] __initconst = {
>>>          { .compatible = "nvidia,tegra20-apbmisc", },
>>>          {},
>>> @@ -112,4 +129,6 @@ void __init tegra_init_apbmisc(void)
>>>          strapping_base = of_iomap(np, 1);
>>>          if (!strapping_base)
>>>                  pr_err("ioremap tegra strapping_base failed\n");
>>> +
>>> +       long_ram_code = of_property_read_bool(np,
>>> "nvidia,long-ram-code");
>>
>>
>> Is this long-ram property chip-dependent? If so, couldn't we just use
>> the chip ID or matched compatible string to decide whether the RAM
>> code length, instead of having a dedicated property for it?
>>
>
> I am under the impression that it is board-specific.

Yeah, some boards with the K1 will use only 2 bits for the ram-code
and others (notably the nyan chromebooks) will use 4.

Regards,

Tomeu

> Mikko
>
>
> --
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^ permalink raw reply	[flat|nested] 21+ messages in thread

end of thread, other threads:[~2015-03-09 14:37 UTC | newest]

Thread overview: 21+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2015-02-12 14:06 [PATCH v6 00/15] Tegra124 EMC (external memory controller) support Tomeu Vizoso
2015-02-12 14:06 ` [PATCH v6 01/15] clk: tegra124: Remove old emc clock Tomeu Vizoso
2015-02-12 14:06 ` [PATCH v6 02/15] of: Document long-ram-code property in nvidia,tegra20-apbmisc Tomeu Vizoso
2015-02-12 14:06 ` [PATCH v6 03/15] soc/tegra: Add ram code reader helper Tomeu Vizoso
2015-03-02  8:46   ` Alexandre Courbot
2015-03-02  9:52     ` Mikko Perttunen
2015-03-09 14:36       ` Tomeu Vizoso
2015-02-12 14:06 ` [PATCH v6 04/15] of: document new emc-timings subnode in nvidia,tegra124-car Tomeu Vizoso
2015-02-12 14:06 ` [PATCH v6 05/15] of: Document timings subnode of nvidia,tegra-mc Tomeu Vizoso
2015-02-12 14:06 ` [PATCH v6 06/15] of: Add Tegra124 EMC bindings Tomeu Vizoso
2015-03-02  8:47   ` Alexandre Courbot
2015-03-02  9:51     ` Mikko Perttunen
2015-02-12 14:06 ` [PATCH v6 07/15] of: document external-memory-controller property in tegra124-car Tomeu Vizoso
2015-02-12 14:06 ` [PATCH v6 08/15] ARM: tegra: Add EMC to Tegra124 device tree Tomeu Vizoso
2015-02-12 14:06 ` [PATCH v6 09/15] ARM: tegra: Add EMC timings to Jetson TK1 " Tomeu Vizoso
2015-02-12 14:06 ` [PATCH v6 10/15] memory: tegra: Add API needed by the EMC driver Tomeu Vizoso
2015-02-12 14:06 ` [PATCH v6 11/15] memory: tegra: Add EMC (external memory controller) driver Tomeu Vizoso
2015-02-12 14:06 ` [PATCH v6 12/15] clk: Expose clk_hw_reparent to providers Tomeu Vizoso
2015-02-12 14:06 ` [PATCH v6 13/15] clk: tegra: Add EMC clock driver Tomeu Vizoso
2015-02-12 14:06 ` [PATCH v6 14/15] memory: tegra: Add debugfs entry for getting and setting the EMC rate Tomeu Vizoso
2015-02-12 14:06 ` [PATCH v6 15/15] clk: tegra: Set the EMC clock as the parent of the MC clock Tomeu Vizoso

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