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Message-Id: <1505351957-14479-5-git-send-email-jacob-chen@iotwrt.com> Date: Thu, 14 Sep 2017 09:19:17 +0800 From: Jacob Chen <jacob-chen@...wrt.com> To: linux-rockchip@...ts.infradead.org Cc: linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, heiko@...ech.de, robh+dt@...nel.org, mchehab@...nel.org, linux-media@...r.kernel.org, laurent.pinchart+renesas@...asonboard.com, hans.verkuil@...co.com, tfiga@...omium.org, nicolas@...fresne.ca, Jacob Chen <jacob-chen@...wrt.com>, Yakir Yang <ykk@...k-chips.com> Subject: [PATCH v9 4/4] dt-bindings: Document the Rockchip RGA bindings Add DT bindings documentation for Rockchip RGA Signed-off-by: Jacob Chen <jacob-chen@...wrt.com> Signed-off-by: Yakir Yang <ykk@...k-chips.com> Acked-by: Rob Herring <robh@...nel.org> --- .../devicetree/bindings/media/rockchip-rga.txt | 33 ++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/rockchip-rga.txt diff --git a/Documentation/devicetree/bindings/media/rockchip-rga.txt b/Documentation/devicetree/bindings/media/rockchip-rga.txt new file mode 100644 index 0000000..fd5276a --- /dev/null +++ b/Documentation/devicetree/bindings/media/rockchip-rga.txt @@ -0,0 +1,33 @@ +device-tree bindings for rockchip 2D raster graphic acceleration controller (RGA) + +RGA is a standalone 2D raster graphic acceleration unit. It accelerates 2D +graphics operations, such as point/line drawing, image scaling, rotation, +BitBLT, alpha blending and image blur/sharpness. + +Required properties: +- compatible: value should be one of the following + "rockchip,rk3288-rga"; + "rockchip,rk3399-rga"; + +- interrupts: RGA interrupt specifier. + +- clocks: phandle to RGA sclk/hclk/aclk clocks + +- clock-names: should be "aclk", "hclk" and "sclk" + +- resets: Must contain an entry for each entry in reset-names. + See ../reset/reset.txt for details. +- reset-names: should be "core", "axi" and "ahb" + +Example: +SoC-specific DT entry: + rga: rga@...80000 { + compatible = "rockchip,rk3399-rga"; + reg = <0xff680000 0x10000>; + interrupts = <GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&cru ACLK_RGA>, <&cru HCLK_RGA>, <&cru SCLK_RGA_CORE>; + clock-names = "aclk", "hclk", "sclk"; + + resets = <&cru SRST_RGA_CORE>, <&cru SRST_A_RGA>, <&cru SRST_H_RGA>; + reset-names = "core, "axi", "ahb"; + }; -- 2.7.4
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