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Message-ID: <481abafd-33af-44a6-8460-068b4a85d764@linaro.org>
Date: Tue, 9 Apr 2024 17:55:42 +0200
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Subject: Re: [PATCH v3 03/18] ASoC: dt-bindings: mt6357: Add audio codec
 document
To: Alexandre Mergnat <amergnat@baylibre.com>,
 Liam Girdwood <lgirdwood@gmail.com>, Mark Brown <broonie@kernel.org>,
 Rob Herring <robh+dt@kernel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
 Conor Dooley <conor+dt@kernel.org>, Matthias Brugger
 <matthias.bgg@gmail.com>,
 AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>,
 Lee Jones <lee@kernel.org>, Flora Fu <flora.fu@mediatek.com>,
 Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>,
 Sumit Semwal <sumit.semwal@linaro.org>,
 =?UTF-8?Q?Christian_K=C3=B6nig?= <christian.koenig@amd.com>,
 Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>,
 Rob Herring <robh@kernel.org>
Cc: linux-sound@vger.kernel.org, devicetree@vger.kernel.org,
 linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
 linux-mediatek@lists.infradead.org, linux-media@vger.kernel.org,
 dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org
References: <20240226-audio-i350-v3-0-16bb2c974c55@baylibre.com>
 <20240226-audio-i350-v3-3-16bb2c974c55@baylibre.com>
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From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
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In-Reply-To: <20240226-audio-i350-v3-3-16bb2c974c55@baylibre.com>
Content-Type: text/plain; charset=UTF-8
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On 09/04/2024 15:42, Alexandre Mergnat wrote:
> Add MT8365 audio codec bindings to set required
> and optional voltage properties between the codec and the board.
> The properties are:
> - phandle of the requiered power supply.

typo

> - Setup of microphone bias voltage.
> - Setup of the speaker pin pull-down.
> 
> Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
> ---
>  .../devicetree/bindings/sound/mt6357.yaml          | 54 ++++++++++++++++++++++

Filename using compatible syntax, so missing vendor prefix.

>  1 file changed, 54 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/sound/mt6357.yaml b/Documentation/devicetree/bindings/sound/mt6357.yaml
> new file mode 100644
> index 000000000000..381cb71b959f
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/mt6357.yaml
> @@ -0,0 +1,54 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/sound/mt6357.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Mediatek MT6357 Codec
> +
> +maintainers:
> +  - Alexandre Mergnat <amergnat@baylibre.com>
> +
> +description: |

Do not need '|' unless you need to preserve formatting.

> +  This is the required and optional voltage properties for this subdevice.
> +  The communication between MT6357 and SoC is through Mediatek PMIC wrapper.
> +  For more detail, please visit Mediatek PMIC wrapper documentation.
> +  Must be a child node of PMIC wrapper.

Why?

> +
> +properties:
> +

Drop blank line

> +  mediatek,hp-pull-down:
> +    description:
> +      Earphone driver positive output stage short to
> +      the audio reference ground.
> +    type: boolean
> +
> +  mediatek,micbias0-microvolt:
> +    description: Selects MIC Bias 0 output voltage.
> +    enum: [1700000, 1800000, 1900000, 2000000,
> +           2100000, 2500000, 2600000, 2700000]
> +    default: 1700000
> +
> +  mediatek,micbias1-microvolt:
> +    description: Selects MIC Bias 1 output voltage.
> +    enum: [1700000, 1800000, 1900000, 2000000,
> +           2100000, 2500000, 2600000, 2700000]
> +    default: 1700000
> +
> +  mediatek,vaud28-supply:
> +    description: 2.8 volt supply phandle for the audio codec

Supplies go without vendor prefixes.

> +
> +required:
> +  - mediatek,vaud28-supply

That's basically no-op schema. I do not understand what you are trying
to achieve here.


> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    codec {
> +        mediatek,micbias0-microvolt = <1900000>;
> +        mediatek,micbias1-microvolt = <1700000>;
> +        mediatek,vaud28-supply = <&mt6357_vaud28_reg>;

Sorry, this does not work. Change voltage to 1111111 and check the results.

Best regards,
Krzysztof