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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
31Example:
32
33codec: wm8903@1a {
34 compatible = "wlf,wm8903";
35 reg = <0x1a>;
36 interrupts = < 347 >;
37
38 gpio-controller;
39 #gpio-cells = <2>;
40
41 micdet-cfg = <0>;
42 micdet-delay = <100>;
43 gpio-cfg = <
44 0x0600 /* DMIC_LR, output */
45 0x0680 /* DMIC_DAT, input */
46 0x0000 /* GPIO, output, low */
47 0x0200 /* Interrupt, output */
48 0x01a0 /* BCLK, input, active high */
49 >;
50};