linux-kernel - Re: [PATCH v2 1/4] ASoC: dt-bindings: stm32: i2s: add audio-graph-card port

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Date:   Fri, 26 Nov 2021 11:25:27 +0100
From:   Olivier MOYSAN <olivier.moysan@...s.st.com>
To:     Rob Herring <robh@...nel.org>
CC:     <linux-kernel@...r.kernel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Olivier Moysan <olivier.moysan@...com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        <fabrice.gasnier@...s.st.com>, <alain.volmat@...s.st.com>,
        Rob Herring <robh+dt@...nel.org>,
        <alsa-devel@...a-project.org>, <amelie.delaunay@...s.st.com>,
        <linux-stm32@...md-mailman.stormreply.com>,
        Mark Brown <broonie@...nel.org>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        <devicetree@...r.kernel.org>, <arnaud.pouliquen@...s.st.com>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v2 1/4] ASoC: dt-bindings: stm32: i2s: add
 audio-graph-card port

Hi Rob,

On 11/25/21 10:26 PM, Rob Herring wrote:
> On Thu, 25 Nov 2021 15:40:50 +0100, Olivier Moysan wrote:
>> The STM2 I2S DAI can be connected via the audio-graph-card.
>> Add port entry into the bindings.
>>
>> Signed-off-by: Olivier Moysan <olivier.moysan@...s.st.com>
>> ---
>>   Documentation/devicetree/bindings/sound/st,stm32-i2s.yaml | 5 +++++
>>   1 file changed, 5 insertions(+)
>>
> 
> Running 'make dtbs_check' with the schema in this patch gives the
> following warnings. Consider if they are expected or the schema is
> incorrect. These may not be new warnings.
> 
> Note that it is not yet a requirement to have 0 warnings for dtbs_check.
> This will change in the future.
> 
> Full log is available here: https://patchwork.ozlabs.org/patch/1559750
> 
> 
> audio-controller@...0b000: 'port' does not match any of the regexes: '^port@[0-9]', 'pinctrl-[0-9]+'
> 	arch/arm/boot/dts/stm32mp157a-dk1.dt.yaml
> 	arch/arm/boot/dts/stm32mp157c-dk2.dt.yaml
> 

This warning is not a new one.

The i2s2 node in stm32mp15xx-dkx.dtsi would require the following binding:
port:
	$ref: audio-graph-port.yaml#
	unevaluatedProperties: false

However the spi binding requires to introduce a unit address:
patternProperties:
   '^port@[0-9]':
     $ref: audio-graph-port.yaml#
     unevaluatedProperties: false

The warning can be removed by re-ordering the bindings patches in the 
serie, as "additionalProperties: true" makes the check more tolerant on 
extra properties.
The patch "ASoC: dt-bindings: stm32: i2s: add audio-graph-card port" can 
even be merely dropped.
So, I suggest to resend the serie without audio-graph-card patch.

Does it sound too permissive to you ?

Thanks
Olivier