linux-kernel - Re: [PATCH v2 2/2] drm/panel: simple: Add Microchip AC69T88A LVDS Display panel

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Message-ID: <20240926-foamy-oarfish-of-passion-ec6fa2@houat>
Date: Thu, 26 Sep 2024 15:58:11 +0200
From: Maxime Ripard <mripard@...nel.org>
To: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc: Manikandan.M@...rochip.com, neil.armstrong@...aro.org, 
	quic_jesszhan@...cinc.com, airlied@...il.com, simona@...ll.ch, 
	maarten.lankhorst@...ux.intel.com, tzimmermann@...e.de, robh@...nel.org, krzk+dt@...nel.org, 
	conor+dt@...nel.org, thierry.reding@...il.com, sam@...nborg.org, 
	dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Dharma.B@...rochip.com
Subject: Re: [PATCH v2 2/2] drm/panel: simple: Add Microchip AC69T88A LVDS
 Display panel

On Thu, Sep 26, 2024 at 04:32:59PM GMT, Dmitry Baryshkov wrote:
> On Thu, Sep 26, 2024 at 08:17:09AM GMT, Manikandan.M@...rochip.com wrote:
> > On 23/09/24 11:37 am, Dmitry Baryshkov wrote:
> > > EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> > > 
> > > On Mon, Sep 23, 2024 at 05:50:22AM GMT, Manikandan.M@...rochip.com wrote:
> > >> On 20/09/24 9:13 pm, Dmitry Baryshkov wrote:
> > >>> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> > >>>
> > >>> On Thu, Sep 19, 2024 at 02:45:48PM GMT, Manikandan Muralidharan wrote:
> > >>>> Add support for Microchip AC69T88A 5 inch TFT LCD 800x480
> > >>>> Display module with LVDS interface.The panel uses the Sitronix
> > >>>> ST7262 800x480 Display driver
> > >>>
> > >>> AC69T88A seems to be a module name, rather than a panel name. What is
> > >>> the actual panel name present on this module?
> > >> Both names, "Microchip AC69T88A" and "MPU32-LVDS-DISPLAY-WVGA" are
> > >> present on the display module
> > > 
> > > Which panel was used for the module? I don't think that Microchip
> > > produces LVDS panels.
> > Its a new LVDS display from Microchip that uses Sitronix ST7262 TFT LCD 
> > driver
> > 
> > https://www.crystalfontz.com/controllers/datasheet-viewer.php?id=486
> 
> Ok. Anyway if somebody ends up looking for the panel, they'll probably
> find the module and vice versa.
> 
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>

Given that aside from that mail, the module name isn't mentionned
anywhere, I'm not sure they would.

The way we usually deal with controllers is to have a separate driver
for panels based on that controller, even more so since that controller
seems to be able to affect the display.

Maxime

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