Documentation/devicetree/bindings/display/rockchip/dw_hdmi-rockchip.txt

   1 Rockchip specific extensions to the Synopsys Designware HDMI
   2 ================================
   3
   4 Required properties:
   5 - compatible: "rockchip,rk3288-dw-hdmi",
   6               "rockchip,rk3399-dw-hdmi";
   7 - reg: Physical base address and length of the controller's registers.
   8 - clocks: phandle to hdmi iahb and isfr clocks.
   9 - clock-names: should be "iahb" "isfr"
  10 - rockchip,grf: this soc should set GRF regs to mux vopl/vopb.
  11 - interrupts: HDMI interrupt number
  12 - ports: contain a port node with endpoint definitions as defined in
  13   Documentation/devicetree/bindings/media/video-interfaces.txt. For
  14   vopb,set the reg = <0> and set the reg = <1> for vopl.
  15 - reg-io-width: the width of the reg:1,4, the value should be 4 on
  16   rk3288 platform
  17
  18 Optional properties
  19 - ddc-i2c-bus: phandle of an I2C controller used for DDC EDID probing
  20 - clocks, clock-names: phandle to the HDMI CEC clock, name should be "cec",
  21                        phandle to the VPLL clock, name should be "vpll".
  22
  23 Example:
  24 hdmi: hdmi@ff980000 {
  25         compatible = "rockchip,rk3288-dw-hdmi";
  26         reg = <0xff980000 0x20000>;
  27         reg-io-width = <4>;
  28         ddc-i2c-bus = <&i2c5>;
  29         rockchip,grf = <&grf>;
  30         interrupts = <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>;
  31         clocks = <&cru  PCLK_HDMI_CTRL>, <&cru SCLK_HDMI_HDCP>;
  32         clock-names = "iahb", "isfr";
  33         status = "disabled";
  34         ports {
  35                 hdmi_in: port {
  36                         #address-cells = <1>;
  37                         #size-cells = <0>;
  38                         hdmi_in_vopb: endpoint@0 {
  39                                 reg = <0>;
  40                                 remote-endpoint = <&vopb_out_hdmi>;
  41                         };
  42                         hdmi_in_vopl: endpoint@1 {
  43                                 reg = <1>;
  44                                 remote-endpoint = <&vopl_out_hdmi>;
  45                         };
  46                 };
  47         };
  48 };