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Message-ID: <CAD=FV=X=rL9Jr91BXFX+a=X+SCjYX7vGhztbh9tEUVn9iLViJQ@mail.gmail.com>
Date: Wed, 10 Jul 2024 10:35:45 -0700
From: Doug Anderson <dianders@...omium.org>
To: Stephan Gerhold <stephan.gerhold@...aro.org>
Cc: Neil Armstrong <neil.armstrong@...aro.org>, Bjorn Andersson <andersson@...nel.org>, 
	Konrad Dybcio <konrad.dybcio@...aro.org>, Jessica Zhang <quic_jesszhan@...cinc.com>, 
	Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org, 
	Abel Vesa <abel.vesa@...aro.org>, Johan Hovold <johan@...nel.org>
Subject: Re: [PATCH 3/5] Revert "drm/panel-edp: Add SDC ATNA45AF01"

Hi,

On Wed, Jul 10, 2024 at 10:05 AM Stephan Gerhold
<stephan.gerhold@...aro.org> wrote:
>
> This reverts commit 8ebb1fc2e69ab8b89a425e402c7bd85e053b7b01.
>
> The panel should be handled through the samsung-atna33xc20 driver for
> correct power up timings. Otherwise the backlight does not work correctly.
>
> We have existing users of this panel through the generic "edp-panel"
> compatible (e.g. the Qualcomm X1E80100 CRD), but the screen works only
> partially in that configuration: It works after boot but once the screen
> gets disabled it does not turn on again until after reboot. It behaves the
> same way with the default "conservative" timings, so we might as well drop
> the configuration from the panel-edp driver. That way, users with old DTBs
> will get a warning and can move to the new driver.
>
> Signed-off-by: Stephan Gerhold <stephan.gerhold@...aro.org>
> ---
>  drivers/gpu/drm/panel/panel-edp.c | 2 --
>  1 file changed, 2 deletions(-)

Reviewed-by: Douglas Anderson <dianders@...omium.org>