From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mason Yang Subject: [PATCH v7 2/2] dt-bindings: spi: Document Renesas R-Car Gen3 RPC-IF controller bindings Date: Wed, 23 Jan 2019 15:09:12 +0800 Message-ID: <1548227352-14910-3-git-send-email-masonccyang@mxic.com.tw> References: <1548227352-14910-1-git-send-email-masonccyang@mxic.com.tw> Cc: juliensu@mxic.com.tw, Simon Horman , zhengxunli@mxic.com.tw, Mason Yang 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 , sergei.shtylyov@cogentembedded.com Return-path: In-Reply-To: <1548227352-14910-1-git-send-email-masonccyang@mxic.com.tw> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-spi.vger.kernel.org Document the bindings used by the Renesas R-Car Gen3 RPC-IF controller. Signed-off-by: Mason Yang --- .../devicetree/bindings/spi/spi-renesas-rpc.txt | 46 ++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 Documentation/devicetree/bindings/spi/spi-renesas-rpc.txt diff --git a/Documentation/devicetree/bindings/spi/spi-renesas-rpc.txt b/Documentation/devicetree/bindings/spi/spi-renesas-rpc.txt new file mode 100644 index 0000000..305bd10 --- /dev/null +++ b/Documentation/devicetree/bindings/spi/spi-renesas-rpc.txt @@ -0,0 +1,46 @@ +Renesas R-Car Gen3 RPC-IF controller Device Tree Bindings +-------------------------------------------------------------------- + +Required properties: +- compatible: should be an SoC-specific compatible value, followed by + "renesas,rcar-gen3-rpc" as a fallback, i.e., + "renesas,r8a77995-rpc", "renesas,rcar-gen3-rpc". + "renesas,r8a7795-rpc" (R-Car H3) + "renesas,r8a7796-rpc" (R-Car M3-W) + "renesas,r8a77965-rpc" (R-Car M3-N) + "renesas,r8a77970-rpc" (R-Car V3M) + "renesas,r8a77980-rpc" (R-Car V3H) + "renesas,r8a77990-rpc" (R-Car E3) + "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@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