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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/sound/dmic-codec.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Generic PDM Digital microphone (DMIC) codec
maintainers:
- Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
allOf:
- $ref: dai-common.yaml#
properties:
compatible:
const: dmic-codec
'#sound-dai-cells':
const: 0
dmicen-gpios:
description: GPIO specifier for DMIC to control start and stop
maxItems: 1
num-channels:
description: Number of microphones on this DAI
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 1
maximum: 8
default: 8
modeswitch-delay-ms:
description: Delay (in ms) to complete DMIC mode switch
wakeup-delay-ms:
description: Delay (in ms) after enabling the DMIC
required:
- compatible
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/gpio/gpio.h>
dmic {
compatible = "dmic-codec";
dmicen-gpios = <&gpio4 3 GPIO_ACTIVE_HIGH>;
num-channels = <1>;
wakeup-delay-ms = <50>;
modeswitch-delay-ms = <35>;
};
...
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