1 Rockchip RK3399 specific extensions to the cdn Display Port
2 ================================
3
4 Required properties:
5 - compatible: must be "rockchip,rk3399-cdn-dp"
6
7 - reg: physical base address of the controller and length
8
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 pairs
15 - reset-names : string of reset names
16 Required elements: "apb", "core", "dptx", "spdif"
17 - power-domains : power-domain property defined with a phandle
18 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: 100000000
21
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 in
25 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 Delivery
31
32 - #sound-dai-cells = it must be 1 if your system is using 2 DAIs: I2S, SPDIF
33
34 -------------------------------------------------------------------------------
35
36 Example:
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 };
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