mirror of https://gitee.com/openkylin/linux.git
83 lines
1.8 KiB
Plaintext
83 lines
1.8 KiB
Plaintext
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.
|
|
|
|
- AVDD-supply : Analog power supply regulator on the AVDD pin.
|
|
|
|
- CPVDD-supply : Charge pump supply regulator on the CPVDD pin.
|
|
|
|
- DBVDD-supply : Digital buffer supply regulator for the DBVDD pin.
|
|
|
|
- DCVDD-supply : Digital core supply regulator for the DCVDD pin.
|
|
|
|
Pins on the device (for linking into audio routes):
|
|
|
|
* IN1L
|
|
* IN1R
|
|
* IN2L
|
|
* IN2R
|
|
* IN3L
|
|
* IN3R
|
|
* DMICDAT
|
|
* HPOUTL
|
|
* HPOUTR
|
|
* LINEOUTL
|
|
* LINEOUTR
|
|
* LOP
|
|
* LON
|
|
* ROP
|
|
* RON
|
|
* MICBIAS
|
|
|
|
Example:
|
|
|
|
wm8903: codec@1a {
|
|
compatible = "wlf,wm8903";
|
|
reg = <0x1a>;
|
|
interrupts = < 347 >;
|
|
|
|
AVDD-supply = <&fooreg_a>;
|
|
CPVDD-supply = <&fooreg_b>;
|
|
DBVDD-supply = <&fooreg_c>;
|
|
DCVDC-supply = <&fooreg_d>;
|
|
|
|
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 */
|
|
>;
|
|
};
|