Documentation/devicetree/bindings/display/rockchip/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                 "rockchip,rk3399-vop-big";
  11                 "rockchip,rk3399-vop-lit";
  12
  13 - interrupts: should contain a list of all VOP IP block interrupts in the
  14                  order: VSYNC, LCD_SYSTEM. The interrupt specifier
  15                  format depends on the interrupt controller used.
  16
  17 - clocks: must include clock specifiers corresponding to entries in the
  18                 clock-names property.
  19
  20 - clock-names: Must contain
  21                 aclk_vop: for ddr buffer transfer.
  22                 hclk_vop: for ahb bus to R/W the phy regs.
  23                 dclk_vop: pixel clock.
  24
  25 - resets: Must contain an entry for each entry in reset-names.
  26   See ../reset/reset.txt for details.
  27 - reset-names: Must include the following entries:
  28   - axi
  29   - ahb
  30   - dclk
  31
  32 - iommus: required a iommu node
  33
  34 - port: A port node with endpoint definitions as defined in
  35   Documentation/devicetree/bindings/media/video-interfaces.txt.
  36
  37 Example:
  38 SoC specific DT entry:
  39         vopb: vopb@ff930000 {
  40                 compatible = "rockchip,rk3288-vop";
  41                 reg = <0xff930000 0x19c>;
  42                 interrupts = <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>;
  43                 clocks = <&cru ACLK_VOP0>, <&cru DCLK_VOP0>, <&cru HCLK_VOP0>;
  44                 clock-names = "aclk_vop", "dclk_vop", "hclk_vop";
  45                 resets = <&cru SRST_LCDC1_AXI>, <&cru SRST_LCDC1_AHB>, <&cru SRST_LCDC1_DCLK>;
  46                 reset-names = "axi", "ahb", "dclk";
  47                 iommus = <&vopb_mmu>;
  48                 vopb_out: port {
  49                         #address-cells = <1>;
  50                         #size-cells = <0>;
  51                         vopb_out_edp: endpoint@0 {
  52                                 reg = <0>;
  53                                 remote-endpoint=<&edp_in_vopb>;
  54                         };
  55                         vopb_out_hdmi: endpoint@1 {
  56                                 reg = <1>;
  57                                 remote-endpoint=<&hdmi_in_vopb>;
  58                         };
  59                 };
  60         };