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,rk3036-vop";
  10                 "rockchip,rk3126-vop";
  11                 "rockchip,px30-vop-lit";
  12                 "rockchip,px30-vop-big";
  13                 "rockchip,rk3066-vop";
  14                 "rockchip,rk3188-vop";
  15                 "rockchip,rk3288-vop";
  16                 "rockchip,rk3368-vop";
  17                 "rockchip,rk3366-vop";
  18                 "rockchip,rk3399-vop-big";
  19                 "rockchip,rk3399-vop-lit";
  20                 "rockchip,rk3228-vop";
  21                 "rockchip,rk3328-vop";
  22
  23 - reg: Must contain one entry corresponding to the base address and length
  24         of the register space. Can optionally contain a second entry
  25         corresponding to the CRTC gamma LUT address.
  26
  27 - interrupts: should contain a list of all VOP IP block interrupts in the
  28                  order: VSYNC, LCD_SYSTEM. The interrupt specifier
  29                  format depends on the interrupt controller used.
  30
  31 - clocks: must include clock specifiers corresponding to entries in the
  32                 clock-names property.
  33
  34 - clock-names: Must contain
  35                 aclk_vop: for ddr buffer transfer.
  36                 hclk_vop: for ahb bus to R/W the phy regs.
  37                 dclk_vop: pixel clock.
  38
  39 - resets: Must contain an entry for each entry in reset-names.
  40   See ../reset/reset.txt for details.
  41 - reset-names: Must include the following entries:
  42   - axi
  43   - ahb
  44   - dclk
  45
  46 - iommus: required a iommu node
  47
  48 - port: A port node with endpoint definitions as defined in
  49   Documentation/devicetree/bindings/media/video-interfaces.txt.
  50
  51 Example:
  52 SoC specific DT entry:
  53         vopb: vopb@ff930000 {
  54                 compatible = "rockchip,rk3288-vop";
  55                 reg = <0x0 0xff930000 0x0 0x19c>, <0x0 0xff931000 0x0 0x1000>;
  56                 interrupts = <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>;
  57                 clocks = <&cru ACLK_VOP0>, <&cru DCLK_VOP0>, <&cru HCLK_VOP0>;
  58                 clock-names = "aclk_vop", "dclk_vop", "hclk_vop";
  59                 resets = <&cru SRST_LCDC1_AXI>, <&cru SRST_LCDC1_AHB>, <&cru SRST_LCDC1_DCLK>;
  60                 reset-names = "axi", "ahb", "dclk";
  61                 iommus = <&vopb_mmu>;
  62                 vopb_out: port {
  63                         #address-cells = <1>;
  64                         #size-cells = <0>;
  65                         vopb_out_edp: endpoint@0 {
  66                                 reg = <0>;
  67                                 remote-endpoint=<&edp_in_vopb>;
  68                         };
  69                         vopb_out_hdmi: endpoint@1 {
  70                                 reg = <1>;
  71                                 remote-endpoint=<&hdmi_in_vopb>;
  72                         };
  73                 };
  74         };