linux-kernel - Re: [PATCH v5 0/3] Add support for OLED panel used on Snapdragon Lenovo T14s Gen6

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Message-Id: <DBIMQO2CS0I3.17XLZPKPCVW2S@linaro.com>
Date: Tue, 22 Jul 2025 14:48:46 +0100
From: Rui Miguel Silva <rmfrfs@...il.com>
To: "Neil Armstrong" <neil.armstrong@...aro.org>, "Johan Hovold"
 <johan@...nel.org>, "Christopher Obbard" <christopher.obbard@...aro.org>
Cc: "Douglas Anderson" <dianders@...omium.org>, "Jessica Zhang"
 <quic_jesszhan@...cinc.com>, "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>, "Bjorn Andersson" <andersson@...nel.org>,
 "Konrad Dybcio" <konradybcio@...nel.org>, "Dmitry Baryshkov"
 <dmitry.baryshkov@....qualcomm.com>, <dri-devel@...ts.freedesktop.org>,
 <linux-kernel@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>, "Rui
 Miguel Silva" <rui.silva@...aro.org>, "Abel Vesa" <abel.vesa@...aro.org>,
 <devicetree@...r.kernel.org>
Subject: Re: [PATCH v5 0/3] Add support for OLED panel used on Snapdragon
 Lenovo T14s Gen6

Hey Neil,

On Tue Jul 22, 2025 at 2:01 PM WEST, Neil Armstrong wrote:

> On 10/07/2025 12:07, Johan Hovold wrote:
>> Hi Chris (and Neil),
>> 
>> On Tue, May 20, 2025 at 10:30:29AM +0200, Johan Hovold wrote:
>> 
>>> On Wed, Apr 02, 2025 at 03:36:31PM +0100, Christopher Obbard wrote:
>>>> The Snapdragon Lenovo T14s Gen6 can be bought with a number of different
>>>> panels. This patch series adds support for the OLED model which has a
>>>> Samsung ATNA40YK20 panel.
>>>>
>>>> With this patch series the backlight of the OLED eDP panel does not
>>>> illuminate since the brightness is incorrectly read from the eDP panel
>>>> as (to be clear this is not a regression). This is fixed in [0].
>>>>
>>>> [0]: https://lore.kernel.org/all/20250330-wip-obbardc-qcom-t14s-oled-panel-brightness-v6-1-84ad1cd1078a@linaro.org/
>>>
>>> It would be good to get OLED support for the T14s merged. Are you
>>> planning on sending another revision of this series?
>> 
>> No reply for over a month. Do you intend to respin these or should
>> someone else take over?
>> 
>> Neil, do you have the OLED version now?
>
> I'm not sure, how do I determine that ? Is there something specific in the type number ?

Yes, yours is the OLED version, the exact models stated above.

Cheers,
     Rui

>
> Neil
>
>> 
>>>> Christopher Obbard (3):
>>>>        arm64: dts: qcom: x1e80100: add epd hpd pinctrl
>>>>        arm64: dts: qcom: x1e78100-t14s: add hpd gpio to dp controller
>>>
>>>>        arm64: dts: qcom: x1e78100-t14s-oled: add edp panel
>>>
>>> Strictly speaking you could have posted this last patch on it's own as
>>> it doesn't depend on adding the hpd pinctrl.
>> 
>> Johan