Kernel-4.18.0-80.el8_dmic

Device-Tree bindings for Digital microphone (DMIC) codec

This device support generic PDM digital microphone.

Required properties:
- compatible: should be “dmic-codec”.

Optional properties:
- dmicen-gpios: GPIO specifier for dmic to control start and stop
- num-channels: Number of microphones on this DAI
- wakeup-delay-ms: Delay (in ms) after enabling the DMIC

Example node:

dmic_codec: dmic@0 {
    compatible = "dmic-codec";
    dmicen-gpios = <&gpio4 3 GPIO_ACTIVE_HIGH>;
    num-channels = <1>;
    wakeup-delay-ms <50>;
};