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-sii902x HDMI bridge bindings
-
-Required properties:
- - compatible: "sil,sii9022"
- - reg: i2c address of the bridge
-
-Optional properties:
- - interrupts: describe the interrupt line used to inform the host
- about hotplug events.
- - reset-gpios: OF device-tree gpio specification for RST_N pin.
-
- HDMI audio properties:
- - #sound-dai-cells: <0> or <1>. <0> if only i2s or spdif pin
- is wired, <1> if the both are wired. HDMI audio is
- configured only if this property is found.
- - sil,i2s-data-lanes: Array of up to 4 integers with values of 0-3
- Each integer indicates which i2s pin is connected to which
- audio fifo. The first integer selects i2s audio pin for the
- first audio fifo#0 (HDMI channels 1&2), second for fifo#1
- (HDMI channels 3&4), and so on. There is 4 fifos and 4 i2s
- pins (SD0 - SD3). Any i2s pin can be connected to any fifo,
- but there can be no gaps. E.g. an i2s pin must be mapped to
- fifo#0 and fifo#1 before mapping a channel to fifo#2. Default
- value is <0>, describing SD0 pin beiging routed to hdmi audio
- fifo #0.
- - clocks: phandle and clock specifier for each clock listed in
- the clock-names property
- - clock-names: "mclk"
- Describes SII902x MCLK input. MCLK can be used to produce
- HDMI audio CTS values. This property follows
- Documentation/devicetree/bindings/clock/clock-bindings.txt
- consumer binding.
-
- If HDMI audio is configured the sii902x device becomes an I2S
- and/or spdif audio codec component (e.g a digital audio sink),
- that can be used in configuring a full audio devices with
- simple-card or audio-graph-card binding. See their binding
- documents on how to describe the way the sii902x device is
- connected to the rest of the audio system:
- Documentation/devicetree/bindings/sound/simple-card.txt
- Documentation/devicetree/bindings/sound/audio-graph-card.txt
- Note: In case of the audio-graph-card binding the used port
- index should be 3.
-
-Optional subnodes:
- - video input: this subnode can contain a video input port node
- to connect the bridge to a display controller output (See this
- documentation [1]).
-
-[1]: Documentation/devicetree/bindings/media/video-interfaces.txt
-
-Example:
- hdmi-bridge@39 {
- compatible = "sil,sii9022";
- reg = <0x39>;
- reset-gpios = <&pioA 1 0>;
-
- #sound-dai-cells = <0>;
- sil,i2s-data-lanes = < 0 1 2 >;
- clocks = <&mclk>;
- clock-names = "mclk";
-
- ports {
- #address-cells = <1>;
- #size-cells = <0>;
-
- port@0 {
- reg = <0>;
- bridge_in: endpoint {
- remote-endpoint = <&dc_out>;
- };
- };
- };
- };