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