[mirror_ubuntu-jammy-kernel.git] / Documentation / devicetree / bindings / sound / dmic.txt

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
	- modeswitch-delay-ms: Delay (in ms) to complete DMIC mode switch

Example node:

	dmic_codec: dmic@0 {
		compatible = "dmic-codec";
		dmicen-gpios = <&gpio4 3 GPIO_ACTIVE_HIGH>;
		num-channels = <1>;
		wakeup-delay-ms <50>;
		modeswitch-delay-ms <35>;
	};
Commit	Line	Data
5863e57c AP	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
8c9741b1	8	Optional properties:
8c9741b1	9	- dmicen-gpios: GPIO specifier for dmic to control start and stop
7fb59e94	10	- num-channels: Number of microphones on this DAI
05c9b302	11	- wakeup-delay-ms: Delay (in ms) after enabling the DMIC
bc0a7dbc	12	- modeswitch-delay-ms: Delay (in ms) to complete DMIC mode switch
8c9741b1	13
5863e57c AP	14	Example node:
	15
	16	dmic_codec: dmic@0 {
	17	compatible = "dmic-codec";
8c9741b1	18	dmicen-gpios = <&gpio4 3 GPIO_ACTIVE_HIGH>;
7fb59e94	19	num-channels = <1>;
05c9b302	20	wakeup-delay-ms <50>;
bc0a7dbc	21	modeswitch-delay-ms <35>;
5863e57c	22	};