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: <7938374e-85fb-42b9-893c-ec3f7274f9c0@oss.qualcomm.com>
Date: Wed, 28 May 2025 18:58:09 +0200
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: 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 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

Konrad