linux-kernel - Re: [PATCH] Revert "drm/bridge: lt9611: Do not generate HFP/HBP/HSA and EOT packet"

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Date:   Fri, 4 Aug 2023 10:30:39 +0200
From:   Neil Armstrong <neil.armstrong@...aro.org>
To:     Marek Vasut <marex@...x.de>, Rob Clark <robdclark@...il.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc:     Amit Pundir <amit.pundir@...aro.org>,
        Robert Foss <rfoss@...nel.org>,
        Jonas Karlman <jonas@...boo.se>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Andrzej Hajda <andrzej.hajda@...el.com>,
        Jagan Teki <jagan@...rulasolutions.com>
Subject: Re: [PATCH] Revert "drm/bridge: lt9611: Do not generate HFP/HBP/HSA
 and EOT packet"

Hi Marek,

On 03/08/2023 20:10, Marek Vasut wrote:
> On 8/2/23 20:49, Rob Clark wrote:
>> On Wed, Aug 2, 2023 at 11:16 AM Dmitry Baryshkov
>> <dmitry.baryshkov@...aro.org> wrote:
>>>

<snip>

>>>
>>> Can we please end the argument, land the fix (this revert) for 6.5 and
>>> work on the solution for 6.6 or 6.7?
>>>
>>
>> Even if they were in-tree, breaking existing hw means revert and
>> try-again.  Especially as we get into later -rc's
> 
> Then just apply the revert, I don't have time to debug this right this moment, and it is anyway meaningless until I can look at the bus with DSI bus analyzer.

I'm applying it, then I'll like to find an explanation when you'll be able to run the DSI bus analyzer.

I'll be able to test for regressions on the db845c board if you require, just ping me on irc.

We should clearly define those flags actions and probably add new flags to reflect the way the qcom
dsi controller acts.

Thanks,
Neil