[PATCH v4 4/5] dt-bindings: video: Add documentation for rockchip edp

[Mark yao <mark.yao@rock-chips.com>]

Add binding documentation for Rockchip SoC EDP driver.

Signed-off-by: Jeff Chen <jeff.chen@rock-chips.com>
Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
---
Changes in v2:
- add edp reset
- add panel node
- add port for display-subsystem

Changes in v3: None

Changes in v4: None

 .../devicetree/bindings/video/rockchip-edp.txt     |   50 ++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/video/rockchip-edp.txt

diff --git a/Documentation/devicetree/bindings/video/rockchip-edp.txt b/Documentation/devicetree/bindings/video/rockchip-edp.txt
new file mode 100644
index 0000000..515e806
--- /dev/null
+++ b/Documentation/devicetree/bindings/video/rockchip-edp.txt
@@ -0,0 +1,50 @@
+Rockchip RK3288 EDP interface
+================================
+
+Required properties:
+- compatible: "rockchip,rk3288-edp";
+
+- reg: physical base address of the controller and length
+- clocks: from common clock binding: handle to dp clock.
+	of memory mapped region.
+- clock-names: from common clock binding:
+	Required elements: "clk_edp"
+			"clk_edp_24m"
+			"pclk_edp"
+- resets: Must contain an entry for each entry in reset-names.
+	See ../reset/reset.txt for details.
+- reset-names: Must include the name "edp"
+
+- rockchip,grf: this soc should set GRF regs, so need get grf here.
+- rockchip,panel: required a simple panel node as described by
+	Documentation/devicetree/bindings/panel/simple-panel.txt
+
+- ports: contain a port node with endpoint definitions as defined in
+  Documentation/devicetree/bindings/media/video-interfaces.txt.
+
+Example:
+	edp: edp@ff970000 {
+		compatible = "rockchip,rk3288-edp";
+		reg = <0xff970000 0x4000>;
+		interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&cru SCLK_EDP>, <&cru SCLK_EDP_24M>, <&cru PCLK_EDP_CTRL>;
+		clock-names = "clk_edp", "clk_edp_24m", "pclk_edp";
+		rockchip,grf = <&grf>;
+		resets = <&cru 111>;
+		reset-names = "edp";
+		rockchip,panel = <&panel>;
+		ports {
+			edp_in: port {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				edp_in_vopb: endpoint@0 {
+					reg = <0>;
+					remote-endpoint = <&vopb_out_edp>;
+				};
+				edp_in_vopl: endpoint@1 {
+					reg = <1>;
+					remote-endpoint = <&vopl_out_edp>;
+				};
+			};
+		};
+	};
-- 
1.7.9.5