| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 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 | }; |