1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/display/bridge/sil,sii9022.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Silicon Image sii902x HDMI bridge
8
9 maintainers:
10 - Boris Brezillon <bbrezillon@kernel.org>
11
12 properties:
13 compatible:
14 oneOf:
15 - items:
16 - enum:
17 - sil,sii9022-cpi # CEC Programming Interface
18 - sil,sii9022-tpi # Transmitter Programming Interface
19 - const: sil,sii9022
20 - const: sil,sii9022
21
22 reg:
23 maxItems: 1
24
25 interrupts:
26 maxItems: 1
27 description: Interrupt line used to inform the host about hotplug events.
28
29 reset-gpios:
30 maxItems: 1
31
32 iovcc-supply:
33 description: I/O Supply Voltage (1.8V or 3.3V)
34
35 cvcc12-supply:
36 description: Digital Core Supply Voltage (1.2V)
37
38 '#sound-dai-cells':
39 enum: [ 0, 1 ]
40 description: |
41 <0> if only I2S or S/PDIF pin is wired,
42 <1> if both are wired.
43 HDMI audio is configured only if this property is found.
44 If HDMI audio is configured, the sii902x device becomes an I2S and/or
45 S/PDIF audio codec component (e.g. a digital audio sink), that can be
46 used in configuring full audio devices with simple-card or
47 audio-graph-card bindings. See their binding documents on how to describe
48 the way the
49 sii902x device is connected to the rest of the audio system:
50 Documentation/devicetree/bindings/sound/simple-card.yaml
51 Documentation/devicetree/bindings/sound/audio-graph-card.yaml
52 Note: In case of the audio-graph-card binding the used port index should
53 be 3.
54
55 sil,i2s-data-lanes:
56 $ref: /schemas/types.yaml#/definitions/uint32-array
57 minItems: 1
58 maxItems: 4
59 uniqueItems: true
60 items:
61 enum: [ 0, 1, 2, 3 ]
62 description:
63 Each integer indicates which I2S pin is connected to which audio FIFO.
64 The first integer selects the I2S audio pin for the first audio FIFO#0
65 (HDMI channels 1&2), the second for FIFO#1 (HDMI channels 3&4), and so
66 on. There are 4 FIFOs and 4 I2S pins (SD0 - SD3). Any I2S pin can be
67 connected to any FIFO, but there can be no gaps. E.g. an I2S pin must be
68 mapped to FIFO#0 and FIFO#1 before mapping a channel to FIFO#2. The
69 default value is <0>, describing SD0 pin being routed to HDMI audio
70 FIFO#0.
71
72 clocks:
73 maxItems: 1
74 description: MCLK input. MCLK can be used to produce HDMI audio CTS values.
75
76 clock-names:
77 const: mclk
78
79 ports:
80 $ref: /schemas/graph.yaml#/properties/ports
81
82 properties:
83 port@0:
84 $ref: /schemas/graph.yaml#/properties/port
85 description: Parallel RGB input port
86
87 port@1:
88 $ref: /schemas/graph.yaml#/properties/port
89 description: HDMI output port
90
91 port@3:
92 $ref: /schemas/graph.yaml#/properties/port
93 description: Sound input port
94
95 required:
96 - compatible
97 - reg
98
99 additionalProperties: false
100
101 examples:
102 - |
103 i2c {
104 #address-cells = <1>;
105 #size-cells = <0>;
106
107 hdmi-bridge@39 {
108 compatible = "sil,sii9022";
109 reg = <0x39>;
110 reset-gpios = <&pioA 1 0>;
111 iovcc-supply = <&v3v3_hdmi>;
112 cvcc12-supply = <&v1v2_hdmi>;
113
114 #sound-dai-cells = <0>;
115 sil,i2s-data-lanes = < 0 1 2 >;
116 clocks = <&mclk>;
117 clock-names = "mclk";
118
119 ports {
120 #address-cells = <1>;
121 #size-cells = <0>;
122
123 port@0 {
124 reg = <0>;
125 bridge_in: endpoint {
126 remote-endpoint = <&dc_out>;
127 };
128 };
129 };
130 };
131 };
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