1NVIDIA Tegra audio complex 2 3Required properties: 4- compatible : "nvidia,tegra-audio-wm8903" 5- clocks : Must contain an entry for each entry in clock-names. 6 See ../clocks/clock-bindings.txt for details. 7- clock-names : Must include the following entries: 8 - pll_a 9 - pll_a_out0 10 - mclk (The Tegra cdev1/extern1 clock, which feeds the CODEC's mclk) 11- nvidia,model : The user-visible name of this sound complex. 12- nvidia,audio-routing : A list of the connections between audio components. 13 Each entry is a pair of strings, the first being the connection's sink, 14 the second being the connection's source. Valid names for sources and 15 sinks are the WM8903's pins (documented in the WM8903 binding document), 16 and the jacks on the board: 17 18 * Headphone Jack 19 * Int Spk 20 * Mic Jack 21 * Int Mic 22 23- nvidia,i2s-controller : The phandle of the Tegra I2S1 controller 24- nvidia,audio-codec : The phandle of the WM8903 audio codec 25 26Optional properties: 27- nvidia,spkr-en-gpios : The GPIO that enables the speakers 28- nvidia,hp-mute-gpios : The GPIO that mutes the headphones 29- nvidia,hp-det-gpios : The GPIO that detect headphones are plugged in 30- nvidia,int-mic-en-gpios : The GPIO that enables the internal microphone 31- nvidia,ext-mic-en-gpios : The GPIO that enables the external microphone 32- nvidia,headset : The Mic Jack represents state of the headset microphone pin 33 34Example: 35 36sound { 37 compatible = "nvidia,tegra-audio-wm8903-harmony", 38 "nvidia,tegra-audio-wm8903" 39 nvidia,model = "tegra-wm8903-harmony"; 40 41 nvidia,audio-routing = 42 "Headphone Jack", "HPOUTR", 43 "Headphone Jack", "HPOUTL", 44 "Int Spk", "ROP", 45 "Int Spk", "RON", 46 "Int Spk", "LOP", 47 "Int Spk", "LON", 48 "Mic Jack", "MICBIAS", 49 "IN1L", "Mic Jack"; 50 51 nvidia,i2s-controller = <&i2s1>; 52 nvidia,audio-codec = <&wm8903>; 53 54 nvidia,spkr-en-gpios = <&codec 2 0>; 55 nvidia,hp-det-gpios = <&gpio 178 0>; /* gpio PW2 */ 56 nvidia,int-mic-en-gpios = <&gpio 184 0>; /*gpio PX0 */ 57 nvidia,ext-mic-en-gpios = <&gpio 185 0>; /* gpio PX1 */ 58 59 clocks = <&tegra_car 112>, <&tegra_car 113>, <&tegra_car 93>; 60 clock-names = "pll_a", "pll_a_out0", "mclk"; 61}; 62 63