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1Rockchip RK3399 specific extensions to the cdn Display Port2================================3 4Required properties:5- compatible: must be "rockchip,rk3399-cdn-dp"6 7- reg: physical base address of the controller and length8 9- clocks: from common clock binding: handle to dp clock.10 11- clock-names: from common clock binding:12 Required elements: "core-clk" "pclk" "spdif" "grf"13 14- resets : a list of phandle + reset specifier pairs15- reset-names : string of reset names16 Required elements: "apb", "core", "dptx", "spdif"17- power-domains : power-domain property defined with a phandle18 to respective power domain.19- assigned-clocks: main clock, should be <&cru SCLK_DP_CORE>20- assigned-clock-rates : the DP core clk frequency, shall be: 10000000021 22- rockchip,grf: this soc should set GRF regs, so need get grf here.23 24- ports: contain a port nodes with endpoint definitions as defined in25 Documentation/devicetree/bindings/media/video-interfaces.txt.26 contained 2 endpoints, connecting to the output of vop.27 28- phys: from general PHY binding: the phandle for the PHY device.29 30- extcon: extcon specifier for the Power Delivery31 32- #sound-dai-cells = it must be 1 if your system is using 2 DAIs: I2S, SPDIF33 34-------------------------------------------------------------------------------35 36Example:37 cdn_dp: dp@fec00000 {38 compatible = "rockchip,rk3399-cdn-dp";39 reg = <0x0 0xfec00000 0x0 0x100000>;40 interrupts = <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>;41 clocks = <&cru SCLK_DP_CORE>, <&cru PCLK_DP_CTRL>,42 <&cru SCLK_SPDIF_REC_DPTX>, <&cru PCLK_VIO_GRF>;43 clock-names = "core-clk", "pclk", "spdif", "grf";44 assigned-clocks = <&cru SCLK_DP_CORE>;45 assigned-clock-rates = <100000000>;46 power-domains = <&power RK3399_PD_HDCP>;47 phys = <&tcphy0_dp>, <&tcphy1_dp>;48 resets = <&cru SRST_DPTX_SPDIF_REC>;49 reset-names = "spdif";50 extcon = <&fusb0>, <&fusb1>;51 rockchip,grf = <&grf>;52 #address-cells = <1>;53 #size-cells = <0>;54 #sound-dai-cells = <1>;55 56 ports {57 #address-cells = <1>;58 #size-cells = <0>;59 60 dp_in: port {61 #address-cells = <1>;62 #size-cells = <0>;63 dp_in_vopb: endpoint@0 {64 reg = <0>;65 remote-endpoint = <&vopb_out_dp>;66 };67 68 dp_in_vopl: endpoint@1 {69 reg = <1>;70 remote-endpoint = <&vopl_out_dp>;71 };72 };73 };74 };75