1Device-Tree bindings for Digital microphone (DMIC) codec 2 3This device support generic PDM digital microphone. 4 5Required properties: 6 - compatible: should be "dmic-codec". 7 8Optional properties: 9 - dmicen-gpios: GPIO specifier for dmic to control start and stop 10 - num-channels: Number of microphones on this DAI 11 - wakeup-delay-ms: Delay (in ms) after enabling the DMIC 12 - modeswitch-delay-ms: Delay (in ms) to complete DMIC mode switch 13 14Example node: 15 16 dmic_codec: dmic@0 { 17 compatible = "dmic-codec"; 18 dmicen-gpios = <&gpio4 3 GPIO_ACTIVE_HIGH>; 19 num-channels = <1>; 20 wakeup-delay-ms <50>; 21 modeswitch-delay-ms <35>; 22 }; 23