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[86.49.110.70]) by smtp.gmail.com with ESMTPSA id r6sm14732088wmc.11.2019.04.24.14.54.30 (version=TLS1_3 cipher=AEAD-AES128-GCM-SHA256 bits=128/128); Wed, 24 Apr 2019 14:54:31 -0700 (PDT) Subject: Re: [PATCH v12 3/3] dt-bindings: mfd: Document Renesas R-Car Gen3 RPC-IF MFD bindings To: Rob Herring , Mason Yang Cc: broonie@kernel.org, linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org, bbrezillon@kernel.org, linux-renesas-soc@vger.kernel.org, Geert Uytterhoeven , lee.jones@linaro.org, sergei.shtylyov@cogentembedded.com, mark.rutland@arm.com, devicetree@vger.kernel.org, juliensu@mxic.com.tw, Simon Horman , zhengxunli@mxic.com.tw References: <1556092536-17095-1-git-send-email-masonccyang@mxic.com.tw> <1556092536-17095-4-git-send-email-masonccyang@mxic.com.tw> <20190424212356.GA27103@bogus> From: Marek Vasut Openpgp: preference=signencrypt Message-ID: <65853dc2-6f3c-1494-7e72-54877797cdd2@gmail.com> Date: Wed, 24 Apr 2019 23:54:30 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: <20190424212356.GA27103@bogus> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 4/24/19 11:23 PM, Rob Herring wrote: > On Wed, Apr 24, 2019 at 03:55:36PM +0800, Mason Yang wrote: >> Document the bindings used by the Renesas R-Car Gen3 RPC-IF MFD. >> >> Signed-off-by: Mason Yang >> --- >> .../devicetree/bindings/mfd/mfd-renesas-rpc.txt | 40 ++++++++++++++++++++++ >> 1 file changed, 40 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..668b822 >> --- /dev/null >> +++ b/Documentation/devicetree/bindings/mfd/mfd-renesas-rpc.txt >> @@ -0,0 +1,40 @@ >> +Renesas R-Car Gen3 RPC-IF MFD Device Tree Bindings >> +-------------------------------------------------- > > Looks like a SPI flash controller from the example. What makes it an > MFD? It supports both SPI NOR and HyperFlash (CFI-compliant flash with different bus interface). >> + >> +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@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>; >> + }; >> + }; >> -- >> 1.9.1 >> -- Best regards, Marek Vasut