linux-kernel - Re: [PATCH v11 3/3] dt-bindings: mfd: Document Renesas R-Car Gen3 RPC-IF MFD bindings

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Message-ID: <2714b406-1038-c3e2-be6b-326c073497ea@cogentembedded.com>
Date:   Mon, 22 Apr 2019 14:45:56 +0300
From:   Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:     Mason Yang <masonccyang@...c.com.tw>, 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, robh+dt@...nel.org, mark.rutland@....com,
        devicetree@...r.kernel.org
Cc:     juliensu@...c.com.tw, Simon Horman <horms@...ge.net.au>,
        zhengxunli@...c.com.tw
Subject: Re: [PATCH v11 3/3] dt-bindings: mfd: Document Renesas R-Car Gen3
 RPC-IF MFD bindings

Hello!

On 04/22/2019 06:32 AM, Mason Yang wrote:

> 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,

   RPC-IF.

> +	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";

  You forgot to add back the "wbuf" entrees above.

> +		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>;
> +		};
> +	};
> 

MBR, Sergei