linux-kernel - Re: [PATCH v6 2/3] drm: panel: nt36672a: Add support for novatek nt35596s panel

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Message-ID: <ylo6kh6wqzpedoibc52qjbb3fbmiofclfjj2zog7sufn4rqyvf@jxcxjft56czl>
Date: Mon, 15 Sep 2025 21:22:46 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: David Heidelberg <david@...t.cz>
Cc: Sumit Semwal <sumit.semwal@...aro.org>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Jessica Zhang <jessica.zhang@....qualcomm.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>, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        Molly Sophia <mollysophia379@...il.com>,
        Arnaud Ferraris <arnaud.ferraris@...labora.com>
Subject: Re: [PATCH v6 2/3] drm: panel: nt36672a: Add support for novatek
 nt35596s panel

On Mon, Sep 15, 2025 at 05:06:51PM +0200, David Heidelberg wrote:
> 
> On 15/09/2025 13:11, Dmitry Baryshkov wrote:
> > On Mon, Sep 15, 2025 at 12:11:49PM +0200, David Heidelberg wrote:
> > > On 15/09/2025 03:29, Dmitry Baryshkov wrote:
> > > > On Sat, Sep 13, 2025 at 09:19:48PM +0200, David Heidelberg via B4 Relay wrote:
> > > > > From: Molly Sophia <mollysophia379@...il.com>
> > > > > 
> > > > > Novatek NT35596s is a generic DSI IC that drives command and video mode
> > > > > panels.
> > > > > Currently add support for the LCD panel from JDI connected with this IC,
> > > > > as found on Xiaomi Mi Mix 2S phones.
> > > > 
> > > > Why are you adding it to the existing driver rather than adding a new
> > > > one?
> > > 
> > > Hello, originally it started as a standalone driver (see v2 patchset), but
> > > got merged due to similarities.
> > 
> > I'm not sure, you had to get rid of the two command sets. On the other
> > hand, adding a new module will add a lot of boilerplate. Let's keep it
> > as is. Please add some notes to the commit message.
> 
> Ok, I found out in the meantime that Alexey is working on refactoring
> nt36672a, so we’ll coordinate. I’ll likely need to rebase this changeset on
> top of the refactored nt36672a, or possibly move it into a separate driver.
> 
> See https://github.com/sdm660-mainline/linux/pull/114/commits

I think it fits even more after refactoring. I hope Alexey will post the
refacrorings soon.

> 
> > 
> > > 
> > > v2 patchset:
> > > https://www.mail-archive.com/dri-devel@lists.freedesktop.org/msg404290.html
> > > 
> > > If it's desired, I can switch it back to the standalone driver.
> > > 
> > > > 
> > > > > 
> > > > > Signed-off-by: Molly Sophia <mollysophia379@...il.com>
> > > > > Signed-off-by: Arnaud Ferraris <arnaud.ferraris@...labora.com>
> > > > > Signed-off-by: David Heidelberg <david@...t.cz>
> > > > > ---
> > > > >    drivers/gpu/drm/panel/Kconfig                  |   7 +-
> > > > >    drivers/gpu/drm/panel/panel-novatek-nt36672a.c | 225 ++++++++++++++++++++++++-
> > > > >    2 files changed, 222 insertions(+), 10 deletions(-)
> > > > > 
> > > > >    MODULE_AUTHOR("Sumit Semwal <sumit.semwal@...aro.org>");
> > > > > -MODULE_DESCRIPTION("NOVATEK NT36672A based MIPI-DSI LCD panel driver");
> > > > > +MODULE_AUTHOR("Molly Sophia <mollysophia379@...il.com>");
> > > > 
> > > > ??
> > > 
> > > What's wrong with it?
> > 
> > I thought that the module can have only one MODULE_AUTHOR declaration, I
> > was wrong. This is fine.
> 
> Yeah, it's not usual to have more than one.
> 
> > 
> > > 
> > > David
> > > 
> > > > 
> > > > > +MODULE_DESCRIPTION("NOVATEK NT36672A/NT35596S based MIPI-DSI LCD panel driver");
> > > > >    MODULE_LICENSE("GPL");
> > > > > 
> > > > > -- 
> > > > > 2.51.0
> > > > > 
> > > > > 
> > > > 
> > > 
> > > -- 
> > > David Heidelberg
> > > 
> > 
> 
> -- 
> David Heidelberg
> 

-- 
With best wishes
Dmitry