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[sfrench/cifs-2.6.git] / 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         };