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

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Message-ID: <CACr-zFC+WcSYDZ8SEYO211sBVN_=oEXmSw_X6i6zdk6Y+prHFw@mail.gmail.com>
Date: Thu, 31 Jul 2025 21:51:49 +0100
From: Christopher Obbard <christopher.obbard@...aro.org>
To: Neil Armstrong <neil.armstrong@...aro.org>
Cc: Rui Miguel Silva <rmfrfs@...il.com>, Johan Hovold <johan@...nel.org>, 
	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

Hi Neil, Johan,


On Wed, 23 Jul 2025 at 07:51, Neil Armstrong <neil.armstrong@...aro.org> wrote:
>
> On 22/07/2025 15:48, Rui Miguel Silva wrote:
> > 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.
>
> Ack thx, I'll test and re-spin this patchset then.

Sorry for the delay. I've just sent a v5 of this patch. I will look at
the eDP brightness patch next...


> Neil
>
> >
> > 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
> >
> >
> >
>