Documentation/devicetree/bindings/video/rockchip-vop.txt

   1 device-tree bindings for rockchip soc display controller (vop)
   2
   3 VOP (Visual Output Processor) is the Display Controller for the Rockchip
   4 series of SoCs which transfers the image data from a video memory
   5 buffer to an external LCD interface.
   6
   7 Required properties:
   8 - compatible: value should be one of the following
   9                 "rockchip,rk3288-vop";
  10
  11 - interrupts: should contain a list of all VOP IP block interrupts in the
  12                  order: VSYNC, LCD_SYSTEM. The interrupt specifier
  13                  format depends on the interrupt controller used.
  14
  15 - clocks: must include clock specifiers corresponding to entries in the
  16                 clock-names property.
  17
  18 - clock-names: Must contain
  19                 aclk_vop: for ddr buffer transfer.
  20                 hclk_vop: for ahb bus to R/W the phy regs.
  21                 dclk_vop: pixel clock.
  22
  23 - resets: Must contain an entry for each entry in reset-names.
  24   See ../reset/reset.txt for details.
  25 - reset-names: Must include the following entries:
  26   - axi
  27   - ahb
  28   - dclk
  29
  30 - iommus: required a iommu node
  31
  32 - port: A port node with endpoint definitions as defined in
  33   Documentation/devicetree/bindings/media/video-interfaces.txt.
  34
  35 Example:
  36 SoC specific DT entry:
  37         vopb: vopb@ff930000 {
  38                 compatible = "rockchip,rk3288-vop";
  39                 reg = <0xff930000 0x19c>;
  40                 interrupts = <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>;
  41                 clocks = <&cru ACLK_VOP0>, <&cru DCLK_VOP0>, <&cru HCLK_VOP0>;
  42                 clock-names = "aclk_vop", "dclk_vop", "hclk_vop";
  43                 resets = <&cru SRST_LCDC1_AXI>, <&cru SRST_LCDC1_AHB>, <&cru SRST_LCDC1_DCLK>;
  44                 reset-names = "axi", "ahb", "dclk";
  45                 iommus = <&vopb_mmu>;
  46                 vopb_out: port {
  47                         #address-cells = <1>;
  48                         #size-cells = <0>;
  49                         vopb_out_edp: endpoint@0 {
  50                                 reg = <0>;
  51                                 remote-endpoint=<&edp_in_vopb>;
  52                         };
  53                         vopb_out_hdmi: endpoint@1 {
  54                                 reg = <1>;
  55                                 remote-endpoint=<&hdmi_in_vopb>;
  56                         };
  57                 };
  58         };