FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/display/bridge/sii902x.txt

     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.
            - iovcc-supply: I/O Supply Voltage (1.8V or 3.3V)
            - cvcc12-supply: Digital Core Supply Voltage (1.2V)
    
            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.yaml
            Documentation/devicetree/bindings/sound/audio-graph-card.yaml
            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>;
                    iovcc-supply = <&v3v3_hdmi>;
                    cvcc12-supply = <&v1v2_hdmi>;
    
                    #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>;
                                    };
                            };
                    };
            };

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