[PATCH v1 0/5] Add I2C Support on STM32MP157C

[PATCH v1 0/5] Add I2C Support on STM32MP157C

[Pierre-Yves MORDRET]

This patch adds I2C support on STM32MP157C with configs and device tree.
In the same way I2C4 is enabled for STM32MP157C ED1 Daughter bord.
I2C2/5 is enabled on STM32MP157C EV1 Daughter board on Evaluation board.
---
  Version history:
     v1:
        * Initial
---

Pierre-Yves MORDRET (5):
  ARM: configs: multi_v7: Add I2C support
  ARM: dts: stm32: Add I2C support for STM32MP157C SoC
  ARM: dts: stm32: Add I2Cs pin control on STM32MP157C
  ARM: dts: stm32: Add I2C4 support for STM32MP157C-ED1
  ARM: dts: stm32: Add I2C2/5 support for STM32MP157C-EV1

 arch/arm/boot/dts/stm32mp157-pinctrl.dtsi | 40 ++++++++++++++++
 arch/arm/boot/dts/stm32mp157c-ed1.dts     |  8 ++++
 arch/arm/boot/dts/stm32mp157c-ev1.dts     | 17 +++++++
 arch/arm/boot/dts/stm32mp157c.dtsi        | 77 +++++++++++++++++++++++++++++++
 arch/arm/configs/multi_v7_defconfig       |  1 +
 5 files changed, 143 insertions(+)

-- 
2.7.4

[PATCH v1 1/5] ARM: configs: multi_v7: Add I2C support

[Pierre-Yves MORDRET]

This patch adds I2C F7 support to multi_v7_defconfig

Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
---
  Version history:
     v1:
        * Initial
---
---
 arch/arm/configs/multi_v7_defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig
index e6b3c96..2a87784 100644
--- a/arch/arm/configs/multi_v7_defconfig
+++ b/arch/arm/configs/multi_v7_defconfig
@@ -385,6 +385,7 @@ CONFIG_I2C_S3C2410=y
 CONFIG_I2C_SH_MOBILE=y
 CONFIG_I2C_SIRF=y
 CONFIG_I2C_ST=y
+CONFIG_I2C_STM32F7=y
 CONFIG_I2C_SUN6I_P2WI=y
 CONFIG_I2C_TEGRA=y
 CONFIG_I2C_UNIPHIER=y
-- 
2.7.4

Re: [PATCH v1 1/5] ARM: configs: multi_v7: Add I2C support

[Geert Uytterhoeven]

Hi Pierre-Yves,

On Fri, Apr 20, 2018 at 11:17 AM, Pierre-Yves MORDRET
<pierre-yves.mordret@st.com> wrote:
> This patch adds I2C F7 support to multi_v7_defconfig
>
> Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>

Thanks for your patch!

I think the subject should be "ARM: multi_v7_defconfig: Add STM32F7
I2C support",
as generic I2C support is already enabled.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

[PATCH v1 2/5] ARM: dts: stm32: Add I2C support for STM32MP157C SoC

[Pierre-Yves MORDRET]

This patch adds all I2C instances for STM32MP157C SoC.

Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
---
  Version history:
     v1:
       * Initial
---
---
 arch/arm/boot/dts/stm32mp157c.dtsi | 77 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)

diff --git a/arch/arm/boot/dts/stm32mp157c.dtsi b/arch/arm/boot/dts/stm32mp157c.dtsi
index bc3eddc..9e94186 100644
--- a/arch/arm/boot/dts/stm32mp157c.dtsi
+++ b/arch/arm/boot/dts/stm32mp157c.dtsi
@@ -136,6 +136,57 @@
 			status = "disabled";
 		};
 
+		i2c1: i2c@40012000 {
+			compatible = "st,stm32f7-i2c";
+			reg = <0x40012000 0x400>;
+			interrupt-names = "event", "error";
+			interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&rcc I2C1_K>;
+			resets = <&rcc I2C1_R>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		i2c2: i2c@40013000 {
+			compatible = "st,stm32f7-i2c";
+			reg = <0x40013000 0x400>;
+			interrupt-names = "event", "error";
+			interrupts = <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&rcc I2C2_K>;
+			resets = <&rcc I2C2_R>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		i2c3: i2c@40014000 {
+			compatible = "st,stm32f7-i2c";
+			reg = <0x40014000 0x400>;
+			interrupt-names = "event", "error";
+			interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&rcc I2C3_K>;
+			resets = <&rcc I2C3_R>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+		};
+
+		i2c5: i2c@40015000 {
+			compatible = "st,stm32f7-i2c";
+			reg = <0x40015000 0x400>;
+			interrupt-names = "event", "error";
+			interrupts = <GIC_SPI 107 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&rcc I2C5_K>;
+			resets = <&rcc I2C5_R>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
 		uart7: serial@40018000 {
 			compatible = "st,stm32h7-uart";
 			reg = <0x40018000 0x400>;
@@ -174,5 +225,31 @@
 			clocks = <&rcc USART1_K>;
 			status = "disabled";
 		};
+
+		i2c4: i2c@5c002000 {
+			compatible = "st,stm32f7-i2c";
+			reg = <0x5c002000 0x400>;
+			interrupt-names = "event", "error";
+			interrupts = <GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&rcc I2C4_K>;
+			resets = <&rcc I2C4_R>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		i2c6: i2c@5c009000 {
+			compatible = "st,stm32f7-i2c";
+			reg = <0x5c009000 0x400>;
+			interrupt-names = "event", "error";
+			interrupts = <GIC_SPI 135 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 136 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&rcc I2C6_K>;
+			resets = <&rcc I2C6_R>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
 	};
 };
-- 
2.7.4

[PATCH v1 3/5] ARM: dts: stm32: Add I2Cs pin control on STM32MP157C

[Pierre-Yves MORDRET]

This patch adds a dedicated pin control applied on I2C1,2,4 & 5

Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
---
  Version history:
     v1:
        * Initial
---
---
 arch/arm/boot/dts/stm32mp157-pinctrl.dtsi | 40 +++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi b/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi
index 6f044100..862e626 100644
--- a/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi
+++ b/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi
@@ -146,6 +146,36 @@
 				gpio-ranges = <&pinctrl 0 160 8>;
 			};
 
+			i2c1_pins_a: i2c1@0 {
+				pins {
+					pinmux = <STM32_PINMUX('D', 12, AF5)>, /* I2C1_SCL */
+						 <STM32_PINMUX('F', 15, AF5)>; /* I2C1_SDA */
+					bias-disable;
+					drive-open-drain;
+					slew-rate = <0>;
+				};
+			};
+
+			i2c2_pins_a: i2c2@0 {
+				pins {
+					pinmux = <STM32_PINMUX('H', 4, AF4)>, /* I2C2_SCL */
+						 <STM32_PINMUX('H', 5, AF4)>; /* I2C2_SDA */
+					bias-disable;
+					drive-open-drain;
+					slew-rate = <0>;
+				};
+			};
+
+			i2c5_pins_a: i2c5@0 {
+				pins {
+					pinmux = <STM32_PINMUX('A', 11, AF4)>, /* I2C5_SCL */
+						 <STM32_PINMUX('A', 12, AF4)>; /* I2C5_SDA */
+					bias-disable;
+					drive-open-drain;
+					slew-rate = <0>;
+				};
+			};
+
 			uart4_pins_a: uart4@0 {
 				pins1 {
 					pinmux = <STM32_PINMUX('G', 11, AF6)>; /* UART4_TX */
@@ -180,6 +210,16 @@
 				ngpios = <8>;
 				gpio-ranges = <&pinctrl_z 0 400 8>;
 			};
+
+			i2c4_pins_a: i2c4@0 {
+				pins {
+					pinmux = <STM32_PINMUX('Z', 4, AF6)>, /* I2C4_SCL */
+						 <STM32_PINMUX('Z', 5, AF6)>; /* I2C4_SDA */
+					bias-disable;
+					drive-open-drain;
+					slew-rate = <0>;
+				};
+			};
 		};
 	};
 };
-- 
2.7.4

[PATCH v1 4/5] ARM: dts: stm32: Add I2C4 support for STM32MP157C-ED1

[Pierre-Yves MORDRET]

Add I2C4 support for STM32MP157C evaluation daughter.
Required for PMIC.

Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
---
  Version history:
     v1:
        * Initial
---
---
 arch/arm/boot/dts/stm32mp157c-ed1.dts | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm/boot/dts/stm32mp157c-ed1.dts b/arch/arm/boot/dts/stm32mp157c-ed1.dts
index 9f90337a..490b712 100644
--- a/arch/arm/boot/dts/stm32mp157c-ed1.dts
+++ b/arch/arm/boot/dts/stm32mp157c-ed1.dts
@@ -25,6 +25,14 @@
 	};
 };
 
+&i2c4 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c4_pins_a>;
+	i2c-scl-rising-time-ns = <185>;
+	i2c-scl-falling-time-ns = <20>;
+	status = "okay";
+};
+
 &uart4 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart4_pins_a>;
-- 
2.7.4

[PATCH v1 5/5] ARM: dts: stm32: Add I2C2/5 support for STM32MP157C-EV1

[Pierre-Yves MORDRET]

Add I2C1/5 support for STM32MP157C evaluation daughter on evaluation
mother board.

Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
---
  Version history:
     v1:
        * Initial
---
---
 arch/arm/boot/dts/stm32mp157c-ev1.dts | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/arch/arm/boot/dts/stm32mp157c-ev1.dts b/arch/arm/boot/dts/stm32mp157c-ev1.dts
index 57e6dbc..20dd8aa 100644
--- a/arch/arm/boot/dts/stm32mp157c-ev1.dts
+++ b/arch/arm/boot/dts/stm32mp157c-ev1.dts
@@ -19,3 +19,20 @@
 		serial0 = &uart4;
 	};
 };
+
+&i2c2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c2_pins_a>;
+	i2c-scl-rising-time-ns = <185>;
+	i2c-scl-falling-time-ns = <20>;
+	status = "okay";
+};
+
+&i2c5 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c5_pins_a>;
+	i2c-scl-rising-time-ns = <185>;
+	i2c-scl-falling-time-ns = <20>;
+	status = "okay";
+};
+
-- 
2.7.4