linux-kernel - Re: [PATCH v2 03/10] dt-bindings: display: msm: document DSI controller and phy on SA8775P

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Message-ID: <bcc44dcc-8b8a-427a-9a38-8dc6d59c13e3@oss.qualcomm.com>
Date: Wed, 9 Apr 2025 18:24:18 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Krzysztof Kozlowski <krzk@...nel.org>
Cc: Ayushi Makhija <quic_amakhija@...cinc.com>, linux-arm-msm@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        robdclark@...il.com, dmitry.baryshkov@...aro.org, sean@...rly.run,
        marijn.suijten@...ainline.org, andersson@...nel.org, robh@...nel.org,
        robh+dt@...nel.org, krzk+dt@...nel.org, konradybcio@...nel.org,
        conor+dt@...nel.org, andrzej.hajda@...el.com,
        neil.armstrong@...aro.org, rfoss@...nel.org,
        Laurent.pinchart@...asonboard.com, jonas@...boo.se,
        jernej.skrabec@...il.com, quic_abhinavk@...cinc.com,
        quic_rajeevny@...cinc.com, quic_vproddut@...cinc.com,
        quic_jesszhan@...cinc.com
Subject: Re: [PATCH v2 03/10] dt-bindings: display: msm: document DSI
 controller and phy on SA8775P

On 09/04/2025 09:07, Krzysztof Kozlowski wrote:
> On 08/04/2025 22:26, Dmitry Baryshkov wrote:
>>>>>>>> +          - const: qcom,sa8775p-dsi-ctrl
>>>>>>>> +          - const: qcom,mdss-dsi-ctrl
>>>>>>>
>>>>>>> Drop fallback
>>>>>>>
>>>>>>    
>>>>>> Hi Krzysztof,
>>>>>>
>>>>>> I couldn't understand the meaning of "Drop fallback", could please elaborate it ?
>>>>> Look at SM8750 example on the lists. Keep only front compatible.
>>>>
>>>> Why?
>>>
>>> To make things simpler and shorter.
>>
>> I'd prefer consistency. Previous platforms use qcom,mdss-dsi-ctrl.
> Then you should have objected month(s) ago when Rob asked for dropping
> fallback and since then we consistently drop it.

Well... It's still not merged. is it?
For SM8750 it kinda makes sense, because the clock handling is different 
from all other current platforms. For the existing devices... I'm not 
that sure.

> 
> Best regards,
> Krzysztof


-- 
With best wishes
Dmitry