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Documentation / devicetree / bindings / sound / nvidia,tegra-audio-wm8903.txt




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Based on kernel version 3.9. Page generated on 2013-05-02 23:01 EST.

1	NVIDIA Tegra audio complex
2	
3	Required properties:
4	- compatible : "nvidia,tegra-audio-wm8903"
5	- nvidia,model : The user-visible name of this sound complex.
6	- nvidia,audio-routing : A list of the connections between audio components.
7	  Each entry is a pair of strings, the first being the connection's sink,
8	  the second being the connection's source. Valid names for sources and
9	  sinks are the WM8903's pins, and the jacks on the board:
10	
11	  WM8903 pins:
12	
13	  * IN1L
14	  * IN1R
15	  * IN2L
16	  * IN2R
17	  * IN3L
18	  * IN3R
19	  * DMICDAT
20	  * HPOUTL
21	  * HPOUTR
22	  * LINEOUTL
23	  * LINEOUTR
24	  * LOP
25	  * LON
26	  * ROP
27	  * RON
28	  * MICBIAS
29	
30	  Board connectors:
31	
32	  * Headphone Jack
33	  * Int Spk
34	  * Mic Jack
35	
36	- nvidia,i2s-controller : The phandle of the Tegra I2S1 controller
37	- nvidia,audio-codec : The phandle of the WM8903 audio codec
38	
39	Optional properties:
40	- nvidia,spkr-en-gpios : The GPIO that enables the speakers
41	- nvidia,hp-mute-gpios : The GPIO that mutes the headphones
42	- nvidia,hp-det-gpios : The GPIO that detect headphones are plugged in
43	- nvidia,int-mic-en-gpios : The GPIO that enables the internal microphone
44	- nvidia,ext-mic-en-gpios : The GPIO that enables the external microphone
45	
46	Example:
47	
48	sound {
49		compatible = "nvidia,tegra-audio-wm8903-harmony",
50			     "nvidia,tegra-audio-wm8903"
51		nvidia,model = "tegra-wm8903-harmony";
52	
53		nvidia,audio-routing =
54			"Headphone Jack", "HPOUTR",
55			"Headphone Jack", "HPOUTL",
56			"Int Spk", "ROP",
57			"Int Spk", "RON",
58			"Int Spk", "LOP",
59			"Int Spk", "LON",
60			"Mic Jack", "MICBIAS",
61			"IN1L", "Mic Jack";
62	
63		nvidia,i2s-controller = <&i2s1>;
64		nvidia,audio-codec = <&wm8903>;
65	
66		nvidia,spkr-en-gpios = <&codec 2 0>;
67		nvidia,hp-det-gpios = <&gpio 178 0>; /* gpio PW2 */
68		nvidia,int-mic-en-gpios = <&gpio 184 0>; /*gpio PX0 */
69		nvidia,ext-mic-en-gpios = <&gpio 185 0>; /* gpio PX1 */
70	};
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