linux-kernel - Re: [PATCH v3 2/3] dt-bindings: input: qcom,pm8xxx-vib: add new SPMI vibrator module

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Date:   Tue, 25 Jul 2023 14:26:36 +0800
From:   Fenglin Wu <quic_fenglinw@...cinc.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        <linux-arm-msm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <robh+dt@...nel.org>,
        <agross@...nel.org>, <andersson@...nel.org>,
        <dmitry.baryshkov@...aro.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        <linux-input@...r.kernel.org>, <devicetree@...r.kernel.org>
CC:     <quic_collinsd@...cinc.com>, <quic_subbaram@...cinc.com>,
        <quic_kamalw@...cinc.com>, <jestar@....qualcomm.com>
Subject: Re: [PATCH v3 2/3] dt-bindings: input: qcom,pm8xxx-vib: add new SPMI
 vibrator module



On 7/25/2023 1:53 PM, Krzysztof Kozlowski wrote:
> On 25/07/2023 07:41, Fenglin Wu wrote:
>> Add compatible string 'qcom,spmi-vib-gen2' for vibrator module inside
>> PMI632, PMI7250B, PM7325B, PM7550BA. Also, add 'qcom,spmi-vib-gen1'
>> string for the SPMI vibrator inside PM8916 to maintain the completeness
>> of the hardware version history for SPMI vibrators.
>>
>> Signed-off-by: Fenglin Wu <quic_fenglinw@...cinc.com>
>> ---
>>   .../bindings/input/qcom,pm8xxx-vib.yaml        | 18 ++++++++++++++----
>>   1 file changed, 14 insertions(+), 4 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/input/qcom,pm8xxx-vib.yaml b/Documentation/devicetree/bindings/input/qcom,pm8xxx-vib.yaml
>> index c8832cd0d7da..ab778714ad29 100644
>> --- a/Documentation/devicetree/bindings/input/qcom,pm8xxx-vib.yaml
>> +++ b/Documentation/devicetree/bindings/input/qcom,pm8xxx-vib.yaml
>> @@ -11,10 +11,20 @@ maintainers:
>>   
>>   properties:
>>     compatible:
>> -    enum:
>> -      - qcom,pm8058-vib
>> -      - qcom,pm8916-vib
>> -      - qcom,pm8921-vib
>> +    oneOf:
>> +      - enum:
>> +          - qcom,pm8058-vib
>> +          - qcom,pm8916-vib
>> +          - qcom,pm8921-vib
>> +          - qcom,spmi-vib-gen1
>> +          - qcom,spmi-vib-gen2
> 
> Generic compatibles should not be alone. Drop both lines.

Sure. I will remove 'qcom,spmi-vib-gen2'.
Should I also keep 'qcom,spmi-vib-gen1' as generic compatible and move 
'qcom,pm8916-vib' as its fallback as following?

   compatible:
     oneOf:
       - enum:
           - qcom,pm8058-vib
           - qcom,pm8921-vib
       - items:
           - enum:
               - qcom,pm8916-vib
           - const: qcom,spmi-vib-gen1
       - items:
           - enum:
               - qcom,pmi632-vib
               - qcom,pm7250b-vib
               - qcom,pm7325b-vib
               - qcom,pm7550b-vib
           - const: qcom,spmi-vib-gen2

I saw 'qcom,pm8916-vib' has been used in multiple DTS files and updating 
it as a fallback will result updating those DTS files as well.
Or please help to suggest if there is any way to keep 'qcom,pm8916-vib' 
and 'qcom,spmi-vib-gen1' compatible without updating existing DTS nodes.

Thanks

> 
>> +      - items:
>> +          - enum:
>> +              - qcom,pmi632-vib
>> +              - qcom,pm7250b-vib
>> +              - qcom,pm7325b-vib
>> +              - qcom,pm7550b-vib
>> +          - const: qcom,spmi-vib-gen2
> 
> 
> Best regards,
> Krzysztof
>