linux-kernel - Re: [PATCH v2 2/3] drm/panel: add support for EDT panels

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Date:	Thu, 15 May 2014 10:24:39 +0200
From:	Stefan Agner <stefan@...er.ch>
To:	Thierry Reding <thierry.reding@...il.com>,
	Philipp Zabel <p.zabel@...gutronix.de>
Cc:	swarren@...dotorg.org, linux@....linux.org.uk,
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, linux-tegra@...r.kernel.org,
	marcel@...wiler.com
Subject: Re: [PATCH v2 2/3] drm/panel: add support for EDT panels

Hi Thierry, hi Philipp,

Am 2014-05-15 09:51, schrieb Thierry Reding:
> On Wed, May 14, 2014 at 11:45:57PM +0200, stefan@...er.ch wrote:
>> From: Stefan Agner <stefan@...er.ch>
>>
>> This panels are sold by Toradex for Colibri T20/T30 and Apalis T30
>> evaluation kits.
>>
>> Signed-off-by: Stefan Agner <stefan@...er.ch>
> 
> Panel patches should go to the dri-devel mailing list as well.
> 
> Also a patch was posted only yesterday for a panel that seems to be the
> exact same one as this, even though the name differs minimally, see:
> 
> 	https://patchwork.kernel.org/patch/4175251/
> 
> Adding Philipp on Cc so you guys can work together whether this is
> indeed the same panel. The only differences seem to be in the vertical
> front and back porches, but I suspect that either settings will work on
> both Tegra and i.MX.

Its etm0700g0dh6 vs. et070080dh6, Philipp's panel is with captive multi
touch, (hence the M I guess). The panel itself really looks the same.

I found this overview of EDT displays:
http://www.dmbtechnics.com/scripts/passthru.php?id=7

There seem to be quite a lot variants with the same panel...

Regarding timings, I just checked the documentation, Philipp's timing
really matches the documented ones, I miscalculated the vertical back
porch.

How do we resolve that?

I would suggest that I split out that patch and remove the et070080dh6
panel and send the other as a single patch to the dri-devel mailing list
as well.

Philipp, could you add my display type (et070080dh6) to the compatible
list of your mode/panel entry?

Does this sound reasonable?

--
Stefan
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