From 5ac4837b12f533de5d9f8f66b45494c58e805536 Mon Sep 17 00:00:00 2001 From: Mark Yao Date: Fri, 29 Aug 2014 12:38:41 +0800 Subject: [PATCH] dt-bindings: video: Add documentation for rockchip vop This adds binding documentation for Rockchip SoC VOP driver. Signed-off-by: Mark Yao --- .../bindings/video/rockchip-vop.txt | 58 +++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 Documentation/devicetree/bindings/video/rockchip-vop.txt diff --git a/Documentation/devicetree/bindings/video/rockchip-vop.txt b/Documentation/devicetree/bindings/video/rockchip-vop.txt new file mode 100644 index 000000000000..d15351f2313d --- /dev/null +++ b/Documentation/devicetree/bindings/video/rockchip-vop.txt @@ -0,0 +1,58 @@ +device-tree bindings for rockchip soc display controller (vop) + +VOP (Visual Output Processor) is the Display Controller for the Rockchip +series of SoCs which transfers the image data from a video memory +buffer to an external LCD interface. + +Required properties: +- compatible: value should be one of the following + "rockchip,rk3288-vop"; + +- interrupts: should contain a list of all VOP IP block interrupts in the + order: VSYNC, LCD_SYSTEM. The interrupt specifier + format depends on the interrupt controller used. + +- clocks: must include clock specifiers corresponding to entries in the + clock-names property. + +- clock-names: Must contain + aclk_vop: for ddr buffer transfer. + hclk_vop: for ahb bus to R/W the phy regs. + dclk_vop: pixel clock. + +- resets: Must contain an entry for each entry in reset-names. + See ../reset/reset.txt for details. +- reset-names: Must include the following entries: + - axi + - ahb + - dclk + +- iommus: required a iommu node + +- port: A port node with endpoint definitions as defined in + Documentation/devicetree/bindings/media/video-interfaces.txt. + +Example: +SoC specific DT entry: + vopb: vopb@ff930000 { + compatible = "rockchip,rk3288-vop"; + reg = <0xff930000 0x19c>; + interrupts = ; + clocks = <&cru ACLK_VOP0>, <&cru DCLK_VOP0>, <&cru HCLK_VOP0>; + clock-names = "aclk_vop", "dclk_vop", "hclk_vop"; + resets = <&cru SRST_LCDC1_AXI>, <&cru SRST_LCDC1_AHB>, <&cru SRST_LCDC1_DCLK>; + reset-names = "axi", "ahb", "dclk"; + iommus = <&vopb_mmu>; + vopb_out: port { + #address-cells = <1>; + #size-cells = <0>; + vopb_out_edp: endpoint@0 { + reg = <0>; + remote-endpoint=<&edp_in_vopb>; + }; + vopb_out_hdmi: endpoint@1 { + reg = <1>; + remote-endpoint=<&hdmi_in_vopb>; + }; + }; + }; -- 2.20.1