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