linux-kernel - Re: [PATCH v5 2/6] drm/panel: Add Samsung S6E3FC2X01 DDIC with AMS641RW panel

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Message-ID: <62nvrszyslvmjwhsw2hrtqjny47o6eoz7wrixbgga5gpwjcorl@bhme3j25ywvs>
Date: Mon, 27 Oct 2025 16:24:12 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: david@...t.cz
Cc: Neil Armstrong <neil.armstrong@...aro.org>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Thierry Reding <thierry.reding@...il.com>,
        Sam Ravnborg <sam@...nborg.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>,
        Casey Connolly <casey.connolly@...aro.org>,
        Jessica Zhang <jesszhan0024@...il.com>,
        dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        phone-devel@...r.kernel.org
Subject: Re: [PATCH v5 2/6] drm/panel: Add Samsung S6E3FC2X01 DDIC with
 AMS641RW panel

On Thu, Oct 23, 2025 at 10:24:26PM +0200, David Heidelberg via B4 Relay wrote:
> From: David Heidelberg <david@...t.cz>
> 
> Add panel driver used in the OnePlus 6T.
> 
> No datasheet, based mostly on EDK2 init sequence and the downstream driver.
> 
> Note: This driver doesn't use previously mentioned "samsung,s6e3fc2x01"
> by OnePlus 6T device-tree.
> The reason is because DDIC itself without knowing the panel type used
> with it will not give the driver enough information about the panel used,
> as the panel cannot be autodetected.
> While would be more practical to support the original compatible,
> I would like to avoid it, to prevent confusing devs upstreaming DDICs.
> 
> Based on work of:
>   Casey Connolly <casey@...nolly.tech>
>   Joel Selvaraj <foss@...lselvaraj.com>
>   Nia Espera <a5b6@...eup.net>
> 
> Signed-off-by: David Heidelberg <david@...t.cz>
> ---
>  MAINTAINERS                                      |   1 +
>  drivers/gpu/drm/panel/Kconfig                    |  13 +
>  drivers/gpu/drm/panel/Makefile                   |   1 +
>  drivers/gpu/drm/panel/panel-samsung-s6e3fc2x01.c | 385 +++++++++++++++++++++++
>  4 files changed, 400 insertions(+)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>


-- 
With best wishes
Dmitry