sii902x.txt (2731B)
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 - iovcc-supply: I/O Supply Voltage (1.8V or 3.3V) 12 - cvcc12-supply: Digital Core Supply Voltage (1.2V) 13 14 HDMI audio properties: 15 - #sound-dai-cells: <0> or <1>. <0> if only i2s or spdif pin 16 is wired, <1> if the both are wired. HDMI audio is 17 configured only if this property is found. 18 - sil,i2s-data-lanes: Array of up to 4 integers with values of 0-3 19 Each integer indicates which i2s pin is connected to which 20 audio fifo. The first integer selects i2s audio pin for the 21 first audio fifo#0 (HDMI channels 1&2), second for fifo#1 22 (HDMI channels 3&4), and so on. There is 4 fifos and 4 i2s 23 pins (SD0 - SD3). Any i2s pin can be connected to any fifo, 24 but there can be no gaps. E.g. an i2s pin must be mapped to 25 fifo#0 and fifo#1 before mapping a channel to fifo#2. Default 26 value is <0>, describing SD0 pin beiging routed to hdmi audio 27 fifo #0. 28 - clocks: phandle and clock specifier for each clock listed in 29 the clock-names property 30 - clock-names: "mclk" 31 Describes SII902x MCLK input. MCLK can be used to produce 32 HDMI audio CTS values. This property follows 33 Documentation/devicetree/bindings/clock/clock-bindings.txt 34 consumer binding. 35 36 If HDMI audio is configured the sii902x device becomes an I2S 37 and/or spdif audio codec component (e.g a digital audio sink), 38 that can be used in configuring a full audio devices with 39 simple-card or audio-graph-card binding. See their binding 40 documents on how to describe the way the sii902x device is 41 connected to the rest of the audio system: 42 Documentation/devicetree/bindings/sound/simple-card.yaml 43 Documentation/devicetree/bindings/sound/audio-graph-card.yaml 44 Note: In case of the audio-graph-card binding the used port 45 index should be 3. 46 47Optional subnodes: 48 - video input: this subnode can contain a video input port node 49 to connect the bridge to a display controller output (See this 50 documentation [1]). 51 52[1]: Documentation/devicetree/bindings/media/video-interfaces.txt 53 54Example: 55 hdmi-bridge@39 { 56 compatible = "sil,sii9022"; 57 reg = <0x39>; 58 reset-gpios = <&pioA 1 0>; 59 iovcc-supply = <&v3v3_hdmi>; 60 cvcc12-supply = <&v1v2_hdmi>; 61 62 #sound-dai-cells = <0>; 63 sil,i2s-data-lanes = < 0 1 2 >; 64 clocks = <&mclk>; 65 clock-names = "mclk"; 66 67 ports { 68 #address-cells = <1>; 69 #size-cells = <0>; 70 71 port@0 { 72 reg = <0>; 73 bridge_in: endpoint { 74 remote-endpoint = <&dc_out>; 75 }; 76 }; 77 }; 78 };