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Date:   Mon, 22 Apr 2019 11:32:05 +0800
From:   Mason Yang <masonccyang@...c.com.tw>
To:     broonie@...nel.org, marek.vasut@...il.com,
        linux-kernel@...r.kernel.org, linux-spi@...r.kernel.org,
        bbrezillon@...nel.org, linux-renesas-soc@...r.kernel.org,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        lee.jones@...aro.org, sergei.shtylyov@...entembedded.com,
        robh+dt@...nel.org, mark.rutland@....com,
        devicetree@...r.kernel.org
Cc:     juliensu@...c.com.tw, Simon Horman <horms@...ge.net.au>,
        Mason Yang <masonccyang@...c.com.tw>, zhengxunli@...c.com.tw
Subject: [PATCH v11 3/3] dt-bindings: mfd: Document Renesas R-Car Gen3 RPC-IF MFD bindings

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

Signed-off-by: Mason Yang <masonccyang@...c.com.tw>
---
 .../devicetree/bindings/mfd/mfd-renesas-rpc.txt    | 39 ++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/mfd-renesas-rpc.txt

diff --git a/Documentation/devicetree/bindings/mfd/mfd-renesas-rpc.txt b/Documentation/devicetree/bindings/mfd/mfd-renesas-rpc.txt
new file mode 100644
index 0000000..ee3bad8
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/mfd-renesas-rpc.txt
@@ -0,0 +1,39 @@
+Renesas R-Car Gen3 RPC-IF MFD controller Device Tree Bindings
+-------------------------------------------------------------
+
+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 the base address of 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"
+- #address-cells: should be 1
+- #size-cells: should be 0
+
+Example:
+
+	rpc: rpc-if@...00000 {
+		compatible = "renesas,r8a77995-rpc", "renesas,rcar-gen3-rpc";
+		reg = <0 0xee200000 0 0x200>, <0 0x08000000 0 0x4000000>;
+		reg-names = "regs", "dirmap";
+		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>;
+		};
+	};
-- 
1.9.1

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