linux-kernel - Re: [PATCH v3 02/12] dt-bindings: arm: qcom-soc: ignore "wsa" from being selected as SoC component

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Message-ID: <9c8fe115-97e8-4966-b332-6de94015f832@kernel.org>
Date: Thu, 29 May 2025 08:58:08 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Konrad Dybcio <konrad.dybcio@....qualcomm.com>,
 Alexey Klimov <alexey.klimov@...aro.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc: Srinivas Kandagatla <srini@...nel.org>, Mark Brown <broonie@...nel.org>,
 linux-sound@...r.kernel.org, Liam Girdwood <lgirdwood@...il.com>,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, Bjorn Andersson <andersson@...nel.org>,
 Dmitry Baryshkov <lumag@...nel.org>, Konrad Dybcio <konradybcio@...nel.org>,
 Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>,
 linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org
Subject: Re: [PATCH v3 02/12] dt-bindings: arm: qcom-soc: ignore "wsa" from
 being selected as SoC component

On 28/05/2025 18:58, Konrad Dybcio wrote:
> On 5/28/25 4:37 PM, Alexey Klimov wrote:
>> On Fri May 23, 2025 at 9:12 AM BST, Krzysztof Kozlowski wrote:
>>> On Thu, May 22, 2025 at 06:40:52PM GMT, Alexey Klimov wrote:
>>>> The pattern matching incorrectly selects "wsa" because of "sa" substring
>>>> and evaluates it as a SoC component or block.
>>>>
>>>> Wsa88xx are family of amplifiers and should not be evaluated here.
>>>>
>>>> Signed-off-by: Alexey Klimov <alexey.klimov@...aro.org>
>>>> ---
>>>>  Documentation/devicetree/bindings/arm/qcom-soc.yaml | 2 +-
>>>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>>>
>>>> diff --git a/Documentation/devicetree/bindings/arm/qcom-soc.yaml b/Documentation/devicetree/bindings/arm/qcom-soc.yaml
>>>> index a77d68dcad4e52e4fee43729ac8dc1caf957262e..99521813a04ca416fe90454a811c4a13143efce3 100644
>>>> --- a/Documentation/devicetree/bindings/arm/qcom-soc.yaml
>>>> +++ b/Documentation/devicetree/bindings/arm/qcom-soc.yaml
>>>> @@ -23,7 +23,7 @@ description: |
>>>>  select:
>>>>    properties:
>>>>      compatible:
>>>> -      pattern: "^qcom,.*(apq|ipq|mdm|msm|qcm|qcs|q[dr]u|sa|sar|sc|sd[amx]|sm|x1[ep])[0-9]+.*$"
>>>> +      pattern: "^qcom,(?!.*wsa)(apq|ipq|mdm|msm|qcm|qcs|q[dr]u|sa|sar|sc|sd[amx]|smx1[ep])[0-9]+.*$"
>>>
>>> Why dropping front .*? Are you sure this matches what we want - so
>>> incorrect compatibles? To me it breaks the entire point of this select,
>>> so I am sure you did not test whether it still works. To remind: this is
>>> to select incorrect compatibles.
>>
>> Thanks, great point. I tested it with regular dtbs checks with different
>> dtb files but I didn't check if it selects incorrect compatibles.
> 
> Maybe we can introduce a '-' before or after the socname, to also officially
> disallow using other connecting characters

It is already there.


Best regards,
Krzysztof