linux-kernel - Re: [PATCH v6 07/18] dt-bindings: display/msm: Add list of mdss-dsi-ctrl compats

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Date:   Wed, 4 Jan 2023 11:37:56 +0200
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Rob Herring <robh@...nel.org>,
        Bryan O'Donoghue <bryan.odonoghue@...aro.org>
Cc:     linux-arm-msm@...r.kernel.org, freedreno@...ts.freedesktop.org,
        devicetree@...r.kernel.org, robdclark@...il.com,
        quic_abhinavk@...cinc.com, sean@...rly.run, airlied@...il.com,
        daniel@...ll.ch, dianders@...omium.org, david@...t.cz,
        krzysztof.kozlowski+dt@...aro.org, swboyd@...omium.org,
        konrad.dybcio@...ainline.org, agross@...nel.org,
        andersson@...nel.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 07/18] dt-bindings: display/msm: Add list of
 mdss-dsi-ctrl compats

On 04/01/2023 02:29, Rob Herring wrote:
> On Fri, Dec 23, 2022 at 02:10:14AM +0000, Bryan O'Donoghue wrote:
>> Add the list of current compats absent the deprecated qcm2290 to the list
>> of dsi compats listed here.
>>
>> Several MDSS yaml files exist which document the dsi sub-node.
>> For each existing SoC MDSS yaml, provide the right dsi compat string.
>>
>> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
>> ---
>>   .../bindings/display/msm/qcom,mdss.yaml          | 16 +++++++++++++++-
>>   .../bindings/display/msm/qcom,msm8998-mdss.yaml  |  8 +++++---
>>   .../bindings/display/msm/qcom,sc7180-mdss.yaml   |  6 ++++--
>>   .../bindings/display/msm/qcom,sc7280-mdss.yaml   |  6 ++++--
>>   .../bindings/display/msm/qcom,sdm845-mdss.yaml   |  8 +++++---
>>   .../bindings/display/msm/qcom,sm8250-mdss.yaml   |  8 +++++---
>>   6 files changed, 38 insertions(+), 14 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/display/msm/qcom,mdss.yaml b/Documentation/devicetree/bindings/display/msm/qcom,mdss.yaml
>> index ba0460268731b..86bb43489bf4a 100644
>> --- a/Documentation/devicetree/bindings/display/msm/qcom,mdss.yaml
>> +++ b/Documentation/devicetree/bindings/display/msm/qcom,mdss.yaml
>> @@ -94,7 +94,21 @@ patternProperties:
>>       type: object
>>       properties:
>>         compatible:
>> -        const: qcom,mdss-dsi-ctrl
>> +        items:
>> +          - enum:
>> +              - qcom,apq8064-dsi-ctrl
>> +              - qcom,msm8916-dsi-ctrl
>> +              - qcom,msm8953-dsi-ctrl
>> +              - qcom,msm8974-dsi-ctrl
>> +              - qcom,msm8996-dsi-ctrl
>> +              - qcom,msm8998-dsi-ctrl
>> +              - qcom,qcm2290-dsi-ctrl
>> +              - qcom,sc7180-dsi-ctrl
>> +              - qcom,sc7280-dsi-ctrl
>> +              - qcom,sdm660-dsi-ctrl
>> +              - qcom,sdm845-dsi-ctrl
>> +              - qcom,sm8250-dsi-ctrl
>> +          - const: qcom,mdss-dsi-ctrl
> 
> No need to have an exact match here. Just this is enough:
> 
> compatible:
>    contains:
>      const: qcom,mdss-dsi-ctrl
> 
> Then the DSI schema will check the rest.

I think the intent here should have been to list DSI variants usable 
with the qcom,mdss device. But then the list should be shortened a bit. 
E.g. apq8064 is pre-MDSS  and sc7180/7280 and sm8250 are used with 
qcom,SoC-mdss devices rather than just qcom,mdss.

> Same for the rest.
> 
> Rob

-- 
With best wishes
Dmitry