xref: /linux/Documentation/devicetree/bindings/display/rockchip/rockchip,dw-hdmi.yaml (revision d53b8e36925256097a08d7cb749198d85cbf9b2b) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/display/rockchip/rockchip,dw-hdmi.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Rockchip DWC HDMI TX Encoder
8
9maintainers:
10  - Mark Yao <markyao0591@gmail.com>
11
12description: |
13  The HDMI transmitter is a Synopsys DesignWare HDMI 1.4 TX controller IP
14  with a companion PHY IP.
15
16allOf:
17  - $ref: ../bridge/synopsys,dw-hdmi.yaml#
18  - $ref: /schemas/sound/dai-common.yaml#
19
20properties:
21  compatible:
22    enum:
23      - rockchip,rk3228-dw-hdmi
24      - rockchip,rk3288-dw-hdmi
25      - rockchip,rk3328-dw-hdmi
26      - rockchip,rk3399-dw-hdmi
27      - rockchip,rk3568-dw-hdmi
28
29  reg-io-width:
30    const: 4
31
32  avdd-0v9-supply:
33    description:
34      A 0.9V supply that powers up the SoC internal circuitry. The actual pin name
35      varies between the different SoCs and is usually HDMI_TX_AVDD_0V9 or sometimes
36      HDMI_AVDD_1V0.
37
38  avdd-1v8-supply:
39    description:
40      A 1.8V supply that powers up the SoC internal circuitry. The pin name on the
41      SoC usually is HDMI_TX_AVDD_1V8.
42
43  clocks:
44    minItems: 2
45    items:
46      - {}
47      - {}
48      # The next three clocks are all optional, but shall be specified in this
49      # order when present.
50      - description: The HDMI CEC controller main clock
51      - description: Power for GRF IO
52      - description: External clock for some HDMI PHY (old clock name, deprecated)
53      - description: External clock for some HDMI PHY (new name)
54
55  clock-names:
56    minItems: 2
57    items:
58      - {}
59      - {}
60      - enum:
61          - cec
62          - grf
63          - vpll
64          - ref
65      - enum:
66          - grf
67          - vpll
68          - ref
69      - enum:
70          - vpll
71          - ref
72
73  phys:
74    maxItems: 1
75    description: The HDMI PHY
76
77  phy-names:
78    const: hdmi
79
80  pinctrl-names:
81    description:
82      The unwedge pinctrl entry shall drive the DDC SDA line low. This is
83      intended to work around a hardware errata that can cause the DDC I2C
84      bus to be wedged.
85    minItems: 1
86    items:
87      - const: default
88      - const: unwedge
89
90  power-domains:
91    maxItems: 1
92
93  ports:
94    $ref: /schemas/graph.yaml#/properties/ports
95
96    properties:
97      port@0:
98        $ref: /schemas/graph.yaml#/properties/port
99        description: Input of the DWC HDMI TX
100        properties:
101          endpoint:
102            description: Connection to the VOP
103          endpoint@0:
104            description: Connection to the VOPB
105          endpoint@1:
106            description: Connection to the VOPL
107      port@1:
108        $ref: /schemas/graph.yaml#/properties/port
109        description: Output of the DWC HDMI TX
110
111    required:
112      - port@0
113      - port@1
114
115  rockchip,grf:
116    $ref: /schemas/types.yaml#/definitions/phandle
117    description:
118      phandle to the GRF to mux vopl/vopb.
119
120  "#sound-dai-cells":
121    const: 0
122
123required:
124  - compatible
125  - reg
126  - reg-io-width
127  - clocks
128  - clock-names
129  - interrupts
130  - ports
131  - rockchip,grf
132
133unevaluatedProperties: false
134
135examples:
136  - |
137    #include <dt-bindings/clock/rk3288-cru.h>
138    #include <dt-bindings/interrupt-controller/arm-gic.h>
139    #include <dt-bindings/interrupt-controller/irq.h>
140    #include <dt-bindings/power/rk3288-power.h>
141
142    hdmi: hdmi@ff980000 {
143        compatible = "rockchip,rk3288-dw-hdmi";
144        reg = <0xff980000 0x20000>;
145        reg-io-width = <4>;
146        interrupts = <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>;
147        clocks = <&cru  PCLK_HDMI_CTRL>, <&cru SCLK_HDMI_HDCP>;
148        clock-names = "iahb", "isfr";
149        ddc-i2c-bus = <&i2c5>;
150        power-domains = <&power RK3288_PD_VIO>;
151        rockchip,grf = <&grf>;
152        #sound-dai-cells = <0>;
153
154        ports {
155            #address-cells = <1>;
156            #size-cells = <0>;
157
158            port@0 {
159                reg = <0>;
160                #address-cells = <1>;
161                #size-cells = <0>;
162
163                hdmi_in_vopb: endpoint@0 {
164                    reg = <0>;
165                    remote-endpoint = <&vopb_out_hdmi>;
166                };
167
168                hdmi_in_vopl: endpoint@1 {
169                    reg = <1>;
170                    remote-endpoint = <&vopl_out_hdmi>;
171                };
172            };
173
174            port@1 {
175                reg = <1>;
176
177                hdmi_out_con: endpoint {
178                    remote-endpoint = <&hdmi_con_in>;
179                };
180            };
181        };
182    };
183
184...
185