linux-kernel - Re: [PATCH] dt-bindings: msm/dsi: Don't require vdds-supply on 7nm PHY

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Date:   Mon, 16 Jan 2023 15:18:36 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc:     linux-arm-msm@...r.kernel.org, andersson@...nel.org,
        agross@...nel.org, krzysztof.kozlowski@...aro.org,
        marijn.suijten@...ainline.org, Rob Clark <robdclark@...il.com>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Sean Paul <sean@...rly.run>, David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Jonathan Marek <jonathan@...ek.ca>,
        dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dt-bindings: msm/dsi: Don't require vdds-supply on 7nm
 PHY



On 16.01.2023 13:52, Dmitry Baryshkov wrote:
> On Mon, 16 Jan 2023 at 13:51, Konrad Dybcio <konrad.dybcio@...aro.org> wrote:
>>
>> On some SoCs (hello SM6375) vdds-supply is not wired to any smd-rpm
>> or rpmh regulator, but instead powered by the VDD_MX/mx.lvl line,
>> which is voted for in the DSI ctrl node.
> 
> I think we should have an explicit `if compatible then required:
> vdds-supply' clause. WDYT?
Well, the driver will still probe and function without it,
so I'm not sure if it's strictly required..


Konrad
> 
>>
>> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
>> ---
>>  Documentation/devicetree/bindings/display/msm/dsi-phy-7nm.yaml | 1 -
>>  1 file changed, 1 deletion(-)
>>
>> diff --git a/Documentation/devicetree/bindings/display/msm/dsi-phy-7nm.yaml b/Documentation/devicetree/bindings/display/msm/dsi-phy-7nm.yaml
>> index 9c9184f94c44..8e9031bbde73 100644
>> --- a/Documentation/devicetree/bindings/display/msm/dsi-phy-7nm.yaml
>> +++ b/Documentation/devicetree/bindings/display/msm/dsi-phy-7nm.yaml
>> @@ -48,7 +48,6 @@ required:
>>    - compatible
>>    - reg
>>    - reg-names
>> -  - vdds-supply
>>
>>  unevaluatedProperties: false
>>
>> --
>> 2.39.0
>>
> 
>