Documentation/devicetree/bindings/sound/dmic.txt

   1 Device-Tree bindings for Digital microphone (DMIC) codec
   2
   3 This device support generic PDM digital microphone.
   4
   5 Required properties:
   6         - compatible: should be "dmic-codec".
   7
   8 Optional properties:
   9         - dmicen-gpios: GPIO specifier for dmic to control start and stop
  10         - num-channels: Number of microphones on this DAI
  11
  12 Example node:
  13
  14         dmic_codec: dmic@0 {
  15                 compatible = "dmic-codec";
  16                 dmicen-gpios = <&gpio4 3 GPIO_ACTIVE_HIGH>;
  17                 num-channels = <1>;
  18         };