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

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Message-ID: <vw4qkj6wtets6dx4irslusnyz2oztjljymzzcmomqxlcphxnvd@gpxrdgzhu5xu>
Date: Thu, 10 Apr 2025 12:16:54 +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 Thu, Apr 10, 2025 at 08:08:17AM +0200, Krzysztof Kozlowski wrote:
> On 09/04/2025 17:24, Dmitry Baryshkov wrote:
> > 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.
> How does it differ? The clock handling does not matter - this is just
> select of schema for the child node.

Ah.... I'm sorry, I misinterpreted the email. Yes, having only a single
compat here is perfectly fine. Please excuse me for the confusion.

-- 
With best wishes
Dmitry