linux-kernel - Re: [PATCH] ASoC: dt-bindings: Convert dmic-codec to DT schema

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Date:   Wed, 12 Oct 2022 11:15:00 +0200
From:   Arnaud POULIQUEN <arnaud.pouliquen@...s.st.com>
To:     Rob Herring <robh@...nel.org>, Liam Girdwood <lgirdwood@...il.com>,
        "Mark Brown" <broonie@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Arnaud Pouliquen <arnaud.pouliquen@...com>,
        <arnaud.pouliquen@...s.st.com>, Heiko Stuebner <heiko@...ech.de>
CC:     <devicetree@...r.kernel.org>, <alsa-devel@...a-project.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ASoC: dt-bindings: Convert dmic-codec to DT schema

Hi Rob,

On 10/11/22 20:41, Rob Herring wrote:
> 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.
> 
> Signed-off-by: Rob Herring <robh@...nel.org>
> ---
>  .../devicetree/bindings/sound/dmic-codec.yaml | 55 +++++++++++++++++++
>  .../devicetree/bindings/sound/dmic.txt        | 22 --------
>  2 files changed, 55 insertions(+), 22 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/sound/dmic-codec.yaml
>  delete mode 100644 Documentation/devicetree/bindings/sound/dmic.txt
> 
> diff --git a/Documentation/devicetree/bindings/sound/dmic-codec.yaml b/Documentation/devicetree/bindings/sound/dmic-codec.yaml
> new file mode 100644
> index 000000000000..767152fa99cc
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/dmic-codec.yaml
> @@ -0,0 +1,55 @@
> +# 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@...com>

I don't have much activity on the audio topic anymore, so I don't know if I'm
the best person.
But if one maintainer is needed, that's fine.
Please just change my email address to arnaud.pouliquen@...s.st.com
With that and the fix reported by the bot
Reviewed-by: Arnaud Pouliquen <arnaud.pouliquen@...s.st.com>

Thanks,
Arnaud

> +
> +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.h>
> +
> +    dmic {
> +        compatible = "dmic-codec";
> +        dmicen-gpios = <&gpio4 3 GPIO_ACTIVE_HIGH>;
> +        num-channels = <1>;
> +        wakeup-delay-ms <50>;
> +        modeswitch-delay-ms <35>;
> +    };
> +...
> diff --git a/Documentation/devicetree/bindings/sound/dmic.txt b/Documentation/devicetree/bindings/sound/dmic.txt
> deleted file mode 100644
> index 32e871037269..000000000000
> --- a/Documentation/devicetree/bindings/sound/dmic.txt
> +++ /dev/null
> @@ -1,22 +0,0 @@
> -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>;
> -	};