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[v10,4/4] dt-bindings: Document the Rockchip RGA bindings

Message ID 20171003092839.26236-5-jacob-chen@iotwrt.com (mailing list archive)
State New, archived
Headers show

Commit Message

Jacob Chen Oct. 3, 2017, 9:28 a.m. UTC 
Add DT bindings documentation for Rockchip RGA

Signed-off-by: Jacob Chen <jacob-chen@iotwrt.com>
Signed-off-by: Yakir Yang <ykk@rock-chips.com>
Acked-by: Rob Herring <robh@kernel.org>
---
 .../devicetree/bindings/media/rockchip-rga.txt     | 33 ++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/rockchip-rga.txt
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diff --git a/Documentation/devicetree/bindings/media/rockchip-rga.txt b/Documentation/devicetree/bindings/media/rockchip-rga.txt
new file mode 100644
index 000000000000..fd5276abfad6
--- /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@ff680000 {
+		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";
+	};