Kernel-4.18.0-80.el8_cdn-dp-rockchip

Rockchip RK3399 specific extensions to the cdn Display Port

Required properties:

• compatible: must be “rockchip,rk3399-cdn-dp”

• reg: physical base address of the controller and length

• clocks: from common clock binding: handle to dp clock.

• clock-names: from common clock binding:

       Required elements: "core-clk" "pclk" "spdif" "grf"
  

• resets : a list of phandle + reset specifier pairs

• reset-names : string of reset names

    Required elements: "apb", "core", "dptx", "spdif"
  

• power-domains : power-domain property defined with a phandle

      to respective power domain.
  

• assigned-clocks: main clock, should be <&cru SCLK_DP_CORE>

• assigned-clock-rates : the DP core clk frequency, shall be: 100000000

• rockchip,grf: this soc should set GRF regs, so need get grf here.

• ports: contain a port nodes with endpoint definitions as defined in
  Documentation/devicetree/bindings/media/video-interfaces.txt.
  contained 2 endpoints, connecting to the output of vop.

• phys: from general PHY binding: the phandle for the PHY device.

• extcon: extcon specifier for the Power Delivery

• #sound-dai-cells = it must be 1 if your system is using 2 DAIs: I2S, SPDIF

---

Example:
cdn_dp: dp@fec00000 {
compatible = “rockchip,rk3399-cdn-dp”;
reg = <0x0 0xfec00000 0x0 0x100000>;
interrupts = <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&cru SCLK_DP_CORE>, <&cru PCLK_DP_CTRL>,
<&cru SCLK_SPDIF_REC_DPTX>, <&cru PCLK_VIO_GRF>;
clock-names = “core-clk”, “pclk”, “spdif”, “grf”;
assigned-clocks = <&cru SCLK_DP_CORE>;
assigned-clock-rates = <100000000>;
power-domains = <&power RK3399_PD_HDCP>;
phys = <&tcphy0_dp>, <&tcphy1_dp>;
resets = <&cru SRST_DPTX_SPDIF_REC>;
reset-names = “spdif”;
extcon = <&fusb0>, <&fusb1>;
rockchip,grf = <&grf>;
#address-cells = <1>;
#size-cells = <0>;
#sound-dai-cells = <1>;

    ports {
        #address-cells = <1>;
        #size-cells = <0>;

        dp_in: port {
            #address-cells = <1>;
            #size-cells = <0>;
            dp_in_vopb: endpoint@0 {
                reg = <0>;
                remote-endpoint = <&vopb_out_dp>;
            };

            dp_in_vopl: endpoint@1 {
                reg = <1>;
                remote-endpoint = <&vopl_out_dp>;
            };
        };
    };
};