LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Mason Yang <masonccyang@mxic.com.tw>
To: broonie@kernel.org, marek.vasut@gmail.com,
	linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org,
	bbrezillon@kernel.org, linux-renesas-soc@vger.kernel.org,
	Geert Uytterhoeven <geert+renesas@glider.be>,
	lee.jones@linaro.org, sergei.shtylyov@cogentembedded.com,
	robh+dt@kernel.org, mark.rutland@arm.com,
	devicetree@vger.kernel.org
Cc: juliensu@mxic.com.tw, Simon Horman <horms@verge.net.au>,
	Mason Yang <masonccyang@mxic.com.tw>,
	miquel.raynal@bootlin.com
Subject: [PATCH v13 3/3] dt-bindings: mfd: Document Renesas R-Car Gen3 RPC-IF controller bindings
Date: Tue, 21 May 2019 15:19:34 +0800	[thread overview]
Message-ID: <1558423174-10748-4-git-send-email-masonccyang@mxic.com.tw> (raw)
In-Reply-To: <1558423174-10748-1-git-send-email-masonccyang@mxic.com.tw>

Document the bindings used by the Renesas R-Car Gen3 RPC-IF controller.

Signed-off-by: Mason Yang <masonccyang@mxic.com.tw>
---
 .../devicetree/bindings/mfd/renesas-rpc-if.txt     | 65 ++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/renesas-rpc-if.txt

diff --git a/Documentation/devicetree/bindings/mfd/renesas-rpc-if.txt b/Documentation/devicetree/bindings/mfd/renesas-rpc-if.txt
new file mode 100644
index 0000000..20ec85b
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/renesas-rpc-if.txt
@@ -0,0 +1,65 @@
+Renesas R-Car Gen3 RPC-IF controller Device Tree Bindings
+---------------------------------------------------------
+
+RPC-IF supports both SPI NOR and HyperFlash (CFI-compliant flash)
+
+Required properties:
+- compatible: should be an SoC-specific compatible value, followed by
+		"renesas,rcar-gen3-rpc" as a fallback.
+		supported SoC-specific values are:
+		"renesas,r8a77995-rpc"	(R-Car D3)
+- reg: should contain three register areas:
+	first for RPC-IF registers,
+	second for the direct mapping read mode and
+	third for the write buffer area.
+- reg-names: should contain "regs", "dirmap" and "wbuf"
+- clocks: should contain 1 entries for the module's clock
+- clock-names: should contain "rpc"
+- power-domains: should contain system-controller(sysc) for power-domain-cell
+- resets: should contain clock pulse generator(cpg) for reset-cell,
+	  power-domain-cell and clock-cell
+- #address-cells: should be 1
+- #size-cells: should be 0
+
+Example:
+- SPI mode:
+
+	rpc: spi@ee200000 {
+		compatible = "renesas,r8a77995-rpc", "renesas,rcar-gen3-rpc";
+		reg = <0 0xee200000 0 0x200>, <0 0x08000000 0 0x4000000>,
+		      <0 0xee208000 0 0x100>;
+		reg-names = "regs", "dirmap", "wbuf";
+		clocks = <&cpg CPG_MOD 917>;
+		clock-names = "rpc";
+		power-domains = <&sysc R8A77995_PD_ALWAYS_ON>;
+		resets = <&cpg 917>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		flash@0 {
+			compatible = "jedec,spi-nor";
+			reg = <0>;
+			spi-max-frequency = <40000000>;
+			spi-tx-bus-width = <1>;
+			spi-rx-bus-width = <1>;
+		};
+	};
+
+- HF mode:
+	rpc: spi@ee200000 {
+		compatible = "renesas,r8a77995-rpc", "renesas,rcar-gen3-rpc";
+		reg = <0 0xee200000 0 0x200>, <0 0x08000000 0 0x4000000>,
+		      <0 0xee208000 0 0x100>;
+		reg-names = "regs", "dirmap", "wbuf";
+		clocks = <&cpg CPG_MOD 917>;
+		clock-names = "rpc";
+		power-domains = <&sysc R8A77995_PD_ALWAYS_ON>;
+		resets = <&cpg 917>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		flash@0 {
+			compatible = "cypress,hyperflash", "cfi-flash";
+			reg = <0>;
+		};
+	};
-- 
1.9.1


  parent reply	other threads:[~2019-05-21  6:58 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-21  7:19 [PATCH v13 0/3] mfd: Add Renesas R-Car Gen3 RPC-IF MFD & SPI driver Mason Yang
2019-05-21  7:19 ` [PATCH v13 1/3] mfd: Add Renesas R-Car Gen3 RPC-IF MFD driver Mason Yang
2019-06-03 13:02   ` Lee Jones
2019-06-04  0:52     ` masonccyang
2019-05-21  7:19 ` [PATCH v13 2/3] spi: Add Renesas R-Car Gen3 RPC-IF SPI controller driver Mason Yang
2019-05-21  7:19 ` Mason Yang [this message]
2019-05-22 16:50   ` [PATCH v13 3/3] dt-bindings: mfd: Document Renesas R-Car Gen3 RPC-IF controller bindings Sergei Shtylyov
2019-05-23  9:16     ` masonccyang
2019-06-03 13:04     ` Lee Jones
2019-06-03 14:55       ` Sergei Shtylyov
2019-06-06  7:40         ` masonccyang
2019-06-18 12:01           ` Marek Vasut
2019-06-19  7:36             ` masonccyang

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1558423174-10748-4-git-send-email-masonccyang@mxic.com.tw \
    --to=masonccyang@mxic.com.tw \
    --cc=bbrezillon@kernel.org \
    --cc=broonie@kernel.org \
    --cc=devicetree@vger.kernel.org \
    --cc=geert+renesas@glider.be \
    --cc=horms@verge.net.au \
    --cc=juliensu@mxic.com.tw \
    --cc=lee.jones@linaro.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-renesas-soc@vger.kernel.org \
    --cc=linux-spi@vger.kernel.org \
    --cc=marek.vasut@gmail.com \
    --cc=mark.rutland@arm.com \
    --cc=miquel.raynal@bootlin.com \
    --cc=robh+dt@kernel.org \
    --cc=sergei.shtylyov@cogentembedded.com \
    --subject='Re: [PATCH v13 3/3] dt-bindings: mfd: Document Renesas R-Car Gen3 RPC-IF controller bindings' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).