linux-kernel - Re: [PATCH 02/23] ARM: dts: n950: add display support

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Message-ID: <20160325001509.GA12097@earth>
Date:	Fri, 25 Mar 2016 01:15:09 +0100
From:	Sebastian Reichel <sre@...nel.org>
To:	Jani Nikula <jani.nikula@...ux.intel.com>
Cc:	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Aaro Koskinen <aaro.koskinen@....fi>,
	Tony Lindgren <tony@...mide.com>, linux-kernel@...r.kernel.org,
	dri-devel@...ts.freedesktop.org,
	Tomi Valkeinen <tomi.valkeinen@...com>,
	linux-omap@...r.kernel.org
Subject: Re: [PATCH 02/23] ARM: dts: n950: add display support

Hi,

On Thu, Mar 24, 2016 at 05:11:15PM +0200, Jani Nikula wrote:
> On Thu, 24 Mar 2016, Sebastian Reichel <sre@...nel.org> wrote:
> > As I said: I did use 864 initially. That results in missing pixels.
> 
> Sorry, I didn't mean to question this. Go with what works, not with some
> old fart's ramblings!

No problem. I also wondered why this has been done. If I understood
Tomi right, the userspace team feared, that their software would not
work with 864, since it was originally written for 854.

Anyways I'm pretty sure, that the first 5 pixels are unusable
from the users point of view.

> > I _think_, that your HW team decided to cover the first and the
> > last few pixels of the 864 display with plastic. So technically
> > it's a 864 display, but effectively it's 854.
> 
> (*shudder* at "your HW team" ;)

;)

> It's plausible, the covers did change slightly for the developer
> edition.

Assuming the non-developer edition can use the full display it
can be "unlocked" with my proposed DT bindings by slight
modifications. I guess there exist just a couple of those, so
maybe we just ignore it for the mainline kernel?

> Good luck with the upstreaming efforts!

Thanks.

-- Sebastian

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