linux-kernel - Re: [PATCH 1/2] dt-bindings: add simple-audio-mux binding

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Date:   Wed, 9 Dec 2020 20:05:45 -0600
From:   Rob Herring <robh@...nel.org>
To:     Alexandre Belloni <alexandre.belloni@...tlin.com>
Cc:     Mark Brown <broonie@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        alsa-devel@...a-project.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings: add simple-audio-mux binding

On Sat, Dec 05, 2020 at 01:15:07AM +0100, Alexandre Belloni wrote:
> Add devicetree documentation for simple audio multiplexers
> 
> Signed-off-by: Alexandre Belloni <alexandre.belloni@...tlin.com>
> ---
> Cc: Rob Herring <robh+dt@...nel.org>
> 
>  .../bindings/sound/simple-audio-mux.yaml      | 41 +++++++++++++++++++
>  1 file changed, 41 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/sound/simple-audio-mux.yaml
> 
> diff --git a/Documentation/devicetree/bindings/sound/simple-audio-mux.yaml b/Documentation/devicetree/bindings/sound/simple-audio-mux.yaml
> new file mode 100644
> index 000000000000..5986d1fcbb54
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/simple-audio-mux.yaml
> @@ -0,0 +1,41 @@
> +# SPDX-License-Identifier: (GPL-2.0+ OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/sound/simple-audio-mux.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Simple Audio Multiplexer
> +
> +maintainers:
> +  - Alexandre Belloni <aleandre.belloni@...tlin.com>

typo

> +
> +description: |
> +  Simple audio multiplexers are driven using gpios, allowing to select which of
> +  their input line is connected to the output line.

What's wrong with the generic mux binding and driver(s)?

> +
> +properties:
> +  compatible:
> +    const: simple-audio-mux
> +
> +  mux-gpios:
> +    description: |
> +      GPIOs used to select the input line.
> +
> +  sound-name-prefix:
> +    $ref: /schemas/types.yaml#/definitions/string
> +    description:
> +      Used as prefix for sink/source names of the component. Must be a
> +      unique string among multiple instances of the same component.
> +
> +required:
> +  - compatible
> +  - mux-gpios
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    mux {
> +        compatible = "simple-audio-mux";
> +        mux-gpios = <&gpio 3 0>;
> +    };
> -- 
> 2.28.0
>