linux-kernel - Re: [PATCH 1/2] ASoC: dt-bindings: Add adi,ssm3515 amp schema

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Date:   Wed, 10 May 2023 10:15:55 +0200
From:   Martin Povišer <povik+lin@...ebit.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Nuno Sá <nuno.sa@...log.com>,
        asahi@...ts.linux.dev, alsa-devel@...a-project.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] ASoC: dt-bindings: Add adi,ssm3515 amp schema


> On 10. 5. 2023, at 9:51, Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org> wrote:
> 
> On 09/05/2023 18:38, Martin Povišer wrote:
>> Add a DT schema for the SSM3515 amp by Analog Devices. It's a simple
>> mono amplifier with digital input.
>> 
>> Signed-off-by: Martin Povišer <povik+lin@...ebit.org>
> 
> 
>> +  reg:
>> +    maxItems: 1
>> +
>> +  adi,ana-gain:
>> +    $ref: /schemas/types.yaml#/definitions/uint32
>> +    enum: [0, 1, 2, 3]
>> +    description: |
>> +      The value to be set in the ANA_GAIN register field on the codec. This determines
>> +      the full voltage span of the codec's analog output.
>> +
>> +      To quote the datasheet on the available options:
>> +
>> +        00: 8.4 V Full-Scale Gain Mapping
>> +        01: 12.6 V Full-Scale Gain Mapping
>> +        10: 14 V Full-Scale Gain Mapping
>> +        11: 15 V Full-Scale Gain Mapping
>> +
>> +  '#sound-dai-cells':
>> +    const: 0
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - adi,ana-gain
>> +
>> +additionalProperties: true
> 
> uinevaluatedProperties: false instead, so users can have name-prefix.

I actually tweaked this to have the example passing, which has sound-name-prefix,
which I guess is what you have in mind. Not that I exactly understand what these
options do (both additionalProperties and unevaluatedProperties), the schema docs
didn’t enlighten me right away when I looked into it.

If 'unevaluatedProperties: false' is the way to go here, I will change it.

Kind regards,
Martin

> Best regards,
> Krzysztof