1WM8903 audio CODEC 2 3This device supports I2C only. 4 5Required properties: 6 7 - compatible : "wlf,wm8903" 8 9 - reg : the I2C address of the device. 10 11 - gpio-controller : Indicates this device is a GPIO controller. 12 13 - #gpio-cells : Should be two. The first cell is the pin number and the 14 second cell is used to specify optional parameters (currently unused). 15 16Optional properties: 17 18 - interrupts : The interrupt line the codec is connected to. 19 20 - micdet-cfg : Default register value for R6 (Mic Bias). If absent, the 21 default is 0. 22 23 - micdet-delay : The debounce delay for microphone detection in mS. If 24 absent, the default is 100. 25 26 - gpio-cfg : A list of GPIO configuration register values. The list must 27 be 5 entries long. If absent, no configuration of these registers is 28 performed. If any entry has the value 0xffffffff, that GPIO's 29 configuration will not be modified. 30 31 - AVDD-supply : Analog power supply regulator on the AVDD pin. 32 33 - CPVDD-supply : Charge pump supply regulator on the CPVDD pin. 34 35 - DBVDD-supply : Digital buffer supply regulator for the DBVDD pin. 36 37 - DCVDD-supply : Digital core supply regulator for the DCVDD pin. 38 39Pins on the device (for linking into audio routes): 40 41 * IN1L 42 * IN1R 43 * IN2L 44 * IN2R 45 * IN3L 46 * IN3R 47 * DMICDAT 48 * HPOUTL 49 * HPOUTR 50 * LINEOUTL 51 * LINEOUTR 52 * LOP 53 * LON 54 * ROP 55 * RON 56 * MICBIAS 57 58Example: 59 60wm8903: codec@1a { 61 compatible = "wlf,wm8903"; 62 reg = <0x1a>; 63 interrupts = < 347 >; 64 65 AVDD-supply = <&fooreg_a>; 66 CPVDD-supply = <&fooreg_b>; 67 DBVDD-supply = <&fooreg_c>; 68 DCVDC-supply = <&fooreg_d>; 69 70 gpio-controller; 71 #gpio-cells = <2>; 72 73 micdet-cfg = <0>; 74 micdet-delay = <100>; 75 gpio-cfg = < 76 0x0600 /* DMIC_LR, output */ 77 0x0680 /* DMIC_DAT, input */ 78 0x0000 /* GPIO, output, low */ 79 0x0200 /* Interrupt, output */ 80 0x01a0 /* BCLK, input, active high */ 81 >; 82}; 83