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ASoC: dt-bindings: Convert dmic-codec to DT schema
Convert the dmic-codec binding to DT schema format. The '#sound-dai-cells' and 'sound-name-prefix' properties were not documented, but are in use, so add them. Reviewed-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com> Signed-off-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20221021175721.4005601-1-robh@kernel.org Signed-off-by: Mark Brown <broonie@kernel.org>
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Documentation/devicetree/bindings/sound/dmic-codec.yaml
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Documentation/devicetree/bindings/sound/dmic-codec.yaml
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# SPDX-License-Identifier: GPL-2.0
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/sound/dmic-codec.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Generic PDM Digital microphone (DMIC) codec
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maintainers:
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- Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
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allOf:
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- $ref: name-prefix.yaml#
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properties:
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compatible:
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const: dmic-codec
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'#sound-dai-cells':
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const: 0
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dmicen-gpios:
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description: GPIO specifier for DMIC to control start and stop
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maxItems: 1
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num-channels:
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description: Number of microphones on this DAI
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 1
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maximum: 8
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default: 8
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modeswitch-delay-ms:
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description: Delay (in ms) to complete DMIC mode switch
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wakeup-delay-ms:
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description: Delay (in ms) after enabling the DMIC
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required:
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- compatible
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unevaluatedProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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dmic {
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compatible = "dmic-codec";
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dmicen-gpios = <&gpio4 3 GPIO_ACTIVE_HIGH>;
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num-channels = <1>;
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wakeup-delay-ms = <50>;
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modeswitch-delay-ms = <35>;
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};
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...
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Device-Tree bindings for Digital microphone (DMIC) codec
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This device support generic PDM digital microphone.
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Required properties:
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- compatible: should be "dmic-codec".
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Optional properties:
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- dmicen-gpios: GPIO specifier for dmic to control start and stop
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- num-channels: Number of microphones on this DAI
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- wakeup-delay-ms: Delay (in ms) after enabling the DMIC
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- modeswitch-delay-ms: Delay (in ms) to complete DMIC mode switch
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Example node:
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dmic_codec: dmic@0 {
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compatible = "dmic-codec";
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dmicen-gpios = <&gpio4 3 GPIO_ACTIVE_HIGH>;
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num-channels = <1>;
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wakeup-delay-ms <50>;
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modeswitch-delay-ms <35>;
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};
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