1sii902x HDMI bridge bindings 2 3Required properties: 4 - compatible: "sil,sii9022" 5 - reg: i2c address of the bridge 6 7Optional properties: 8 - interrupts: describe the interrupt line used to inform the host 9 about hotplug events. 10 - reset-gpios: OF device-tree gpio specification for RST_N pin. 11 12 HDMI audio properties: 13 - #sound-dai-cells: <0> or <1>. <0> if only i2s or spdif pin 14 is wired, <1> if the both are wired. HDMI audio is 15 configured only if this property is found. 16 - sil,i2s-data-lanes: Array of up to 4 integers with values of 0-3 17 Each integer indicates which i2s pin is connected to which 18 audio fifo. The first integer selects i2s audio pin for the 19 first audio fifo#0 (HDMI channels 1&2), second for fifo#1 20 (HDMI channels 3&4), and so on. There is 4 fifos and 4 i2s 21 pins (SD0 - SD3). Any i2s pin can be connected to any fifo, 22 but there can be no gaps. E.g. an i2s pin must be mapped to 23 fifo#0 and fifo#1 before mapping a channel to fifo#2. Default 24 value is <0>, describing SD0 pin beiging routed to hdmi audio 25 fifo #0. 26 - clocks: phandle and clock specifier for each clock listed in 27 the clock-names property 28 - clock-names: "mclk" 29 Describes SII902x MCLK input. MCLK can be used to produce 30 HDMI audio CTS values. This property follows 31 Documentation/devicetree/bindings/clock/clock-bindings.txt 32 consumer binding. 33 34 If HDMI audio is configured the sii902x device becomes an I2S 35 and/or spdif audio codec component (e.g a digital audio sink), 36 that can be used in configuring a full audio devices with 37 simple-card or audio-graph-card binding. See their binding 38 documents on how to describe the way the sii902x device is 39 connected to the rest of the audio system: 40 Documentation/devicetree/bindings/sound/simple-card.yaml 41 Documentation/devicetree/bindings/sound/audio-graph-card.txt 42 Note: In case of the audio-graph-card binding the used port 43 index should be 3. 44 45Optional subnodes: 46 - video input: this subnode can contain a video input port node 47 to connect the bridge to a display controller output (See this 48 documentation [1]). 49 50[1]: Documentation/devicetree/bindings/media/video-interfaces.txt 51 52Example: 53 hdmi-bridge@39 { 54 compatible = "sil,sii9022"; 55 reg = <0x39>; 56 reset-gpios = <&pioA 1 0>; 57 58 #sound-dai-cells = <0>; 59 sil,i2s-data-lanes = < 0 1 2 >; 60 clocks = <&mclk>; 61 clock-names = "mclk"; 62 63 ports { 64 #address-cells = <1>; 65 #size-cells = <0>; 66 67 port@0 { 68 reg = <0>; 69 bridge_in: endpoint { 70 remote-endpoint = <&dc_out>; 71 }; 72 }; 73 }; 74 }; 75