linux-kernel - Re: [PATCH] drm/panel: boe-tv101wum-nl6: Ensure DSI writes succeed during disable

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Message-ID: <CAE-0n51HAkYAcGdsJ=0gbV7JRJSGt9cZ_vHPC3kDepa4rooyvg@mail.gmail.com>
Date:   Wed, 18 Jan 2023 12:24:40 -0600
From:   Stephen Boyd <swboyd@...omium.org>
To:     Sam Ravnborg <sam@...nborg.org>
Cc:     Thierry Reding <thierry.reding@...il.com>,
        linux-kernel@...r.kernel.org, patches@...ts.linux.dev,
        dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org,
        yangcong <yangcong5@...qin.corp-partner.google.com>,
        Douglas Anderson <dianders@...omium.org>,
        Jitao Shi <jitao.shi@...iatek.com>,
        Rob Clark <robdclark@...omium.org>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Subject: Re: [PATCH] drm/panel: boe-tv101wum-nl6: Ensure DSI writes succeed
 during disable

Quoting Stephen Boyd (2023-01-13 12:49:43)
> Quoting Sam Ravnborg (2023-01-13 06:52:09)
> > Hi Stephen,
> > On Tue, Jan 10, 2023 at 11:29:41AM -0800, Stephen Boyd wrote:
> > >
> > > After this patch the unprepare only bails out early if the bool
> > > 'prepared' flag isn't set.
> > OK, then everything is fine.
> >
>
> Doug pointed out that enable isn't symmetric because it doesn't do the
> DSI writes. I've updated the patch and I'll send a v2.

Turns out that splitting prepare into prepare and enable breaks the
display even more for me. For now this is the best patch I have and it
fixes the regression I see in v6.1 kernels. Can I get your Reviewed-by
on this patch?