linux-kernel - Re: [PATCH v2] i.MX51 Framebuffer support

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Message-ID: <20110106102310.GF26009@pengutronix.de>
Date:	Thu, 6 Jan 2011 11:23:10 +0100
From:	Sascha Hauer <s.hauer@...gutronix.de>
To:	Julien Boibessot <julien.boibessot@...e.fr>
Cc:	linux-arm-kernel@...ts.infradead.org, liu.y.victor@...il.com,
	B02280@...escale.com, linux-kernel@...r.kernel.org,
	Samuel Ortiz <sameo@...ux.intel.com>
Subject: Re: [PATCH v2] i.MX51 Framebuffer support

On Wed, Jan 05, 2011 at 02:04:20PM +0100, Julien Boibessot wrote:
> Hello,
> 
> Sascha Hauer a écrit :
> > The following series adds i.MX51 framebuffer support based on the IPUv3. It
> > is not perfect but I decided it is good enough to open it for a wider audience
> > and collect first reviews. I tested this on a babbage board using both outputs
> > (VGA/DVI) with different resolutions up to 1680x1050 and different colour depths.
> > I also tested it on one custom board using a fixed display setting.
> >   
> This driver is also working fine for me on a custom i.MX51 board with a
> 800x480 18 bits TFT LCD (16bpp mode).
> 
> The only strange thing I noticed was a kind of uggly sprite/artefact
> (32x32, I would say) appearing at the same time as the Linux console. I
> think it may be related to a hardware cursor badly (?) initialised, but
> I didn't find a fix yet.
> It disappears when I launch a graphical application (Qt or SDL).

It may be the penguin, but I remember a similar report also talkling
about hardware cursors. I can't reproduce this. You could search for
cursor in the IPU section of the manual and play with the corresponding
registers.

Sascha

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