linux-kernel - Re: [PATCH v10 3/5] backlight: gpio: add support for multiple GPIOs for backlight control

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <obuq7xzn3wzbvpc7pxdb2g652kn4vrucbzv3ttayhmmcle35r3@fiksrgdq6g2m>
Date: Wed, 7 Jan 2026 10:12:13 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: tessolveupstream@...il.com
Cc: Bjorn Andersson <andersson@...nel.org>, konradybcio@...nel.org,
        robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v10 3/5] backlight: gpio: add support for multiple GPIOs
 for backlight control

On Wed, Jan 07, 2026 at 11:27:44AM +0530, tessolveupstream@...il.com wrote:
> 
> 
> On 05-01-2026 21:08, Bjorn Andersson wrote:
> > On Tue, Dec 30, 2025 at 06:32:25PM +0530, Sudarshan Shetty wrote:
> >> Extend the gpio-backlight driver to handle multiple GPIOs instead of a
> >> single one. This allows panels that require driving several enable pins
> >> to be controlled by the backlight framework.
> > 
> > Can you please elaborate on the problem described here. Preferrably in
> > the form described in
> > https://docs.kernel.org/process/submitting-patches.html#describe-your-changes,
> > i.e. start with your problem description, then a description of your
> > solution.
> > 
> > What does it mean for a backlight device to have multiple enable GPIOs?
> > 
> > 
> > PS. The associated binding patch needs to be merged before the
> > DeviceTree (dts) changes can be merged, but it would be more efficient
> > to upstream them separately - as each set of reviewers could focus on
> > their part and you could update the patches based on the feedback from
> > each part.
> >
> 
> Initially, I had included the gpio-backlight driver and binding changes 
> together in the v10 patch series. Later I separated these 
> gpio-backlight changes and submitted them as individual patches to the respective maintainers.Here is the link to the updated patch series:
> https://lore.kernel.org/all/20260105085120.230862-1-tessolveupstream@gmail.com/T/#t

Your commit message should be answering on such questions.

>  
> > Regards,
> > Bjorn
> > 
> >>
> >> Signed-off-by: Sudarshan Shetty <tessolveupstream@...il.com>
> >> ---
> >>  drivers/video/backlight/gpio_backlight.c | 61 +++++++++++++++++-------
> >>  1 file changed, 45 insertions(+), 16 deletions(-)

-- 
With best wishes
Dmitry