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- WM8903 audio CODEC
- This device supports I2C only.
- Required properties:
- - compatible : "wlf,wm8903"
- - reg : the I2C address of the device.
- - gpio-controller : Indicates this device is a GPIO controller.
- - #gpio-cells : Should be two. The first cell is the pin number and the
- second cell is used to specify optional parameters (currently unused).
- Optional properties:
- - interrupts : The interrupt line the codec is connected to.
- - micdet-cfg : Default register value for R6 (Mic Bias). If absent, the
- default is 0.
- - micdet-delay : The debounce delay for microphone detection in mS. If
- absent, the default is 100.
- - gpio-cfg : A list of GPIO configuration register values. The list must
- be 5 entries long. If absent, no configuration of these registers is
- performed. If any entry has the value 0xffffffff, that GPIO's
- configuration will not be modified.
- Example:
- codec: wm8903@1a {
- compatible = "wlf,wm8903";
- reg = <0x1a>;
- interrupts = < 347 >;
- gpio-controller;
- #gpio-cells = <2>;
- micdet-cfg = <0>;
- micdet-delay = <100>;
- gpio-cfg = <
- 0x0600 /* DMIC_LR, output */
- 0x0680 /* DMIC_DAT, input */
- 0x0000 /* GPIO, output, low */
- 0x0200 /* Interrupt, output */
- 0x01a0 /* BCLK, input, active high */
- >;
- };
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