Unverified Commit 8da313ad authored by Rob Herring's avatar Rob Herring Committed by Mark Brown
Browse files

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: default avatarArnaud Pouliquen <arnaud.pouliquen@foss.st.com>
Signed-off-by: default avatarRob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20221021175721.4005601-1-robh@kernel.org


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent b700672e

Documentation/devicetree/bindings/sound/dmic-codec.yaml

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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: name-prefix.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>;

    };

...

Documentation/devicetree/bindings/sound/dmic.txt

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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>;

	};