linux-kernel - Re: [PATCH v2 2/4] Revert "drm/panel-edp: Add SDC ATNA45AF01"

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Message-ID: <ZpUWeFYjrkvhUaB7@hovoldconsulting.com>
Date: Mon, 15 Jul 2024 14:30:48 +0200
From: Johan Hovold <johan@...nel.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>,
	Douglas Anderson <dianders@...omium.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>
Subject: Re: [PATCH v2 2/4] Revert "drm/panel-edp: Add SDC ATNA45AF01"

On Mon, Jul 15, 2024 at 02:15:38PM +0200, Stephan Gerhold 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.
> 
> Reviewed-by: Douglas Anderson <dianders@...omium.org>
> Signed-off-by: Stephan Gerhold <stephan.gerhold@...aro.org>

Reviewed-by: Johan Hovold <johan+linaro@...nel.org>
Tested-by: Johan Hovold <johan+linaro@...nel.org>