linux-kernel - Re: [PATCH 13/13] video: omap: allow building on !MMU

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Message-ID: <20140508231711.GF2198@atomide.com>
Date:	Thu, 8 May 2014 16:17:11 -0700
From:	Tony Lindgren <tony@...mide.com>
To:	Aaro Koskinen <aaro.koskinen@....fi>
Cc:	Tomi Valkeinen <tomi.valkeinen@...com>,
	Peter Griffin <peter.griffin@...aro.org>,
	Arnd Bergmann <arnd@...db.de>, linux-kernel@...r.kernel.org,
	linaro-kernel@...ts.linaro.org,
	Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>,
	linux-fbdev@...r.kernel.org, linux-omap@...r.kernel.org,
	Janusz Krzysztofik <jmkrzyszt@...il.com>
Subject: Re: [PATCH 13/13] video: omap: allow building on !MMU

* Aaro Koskinen <aaro.koskinen@....fi> [140508 16:09]:
> Hi,
> 
> On Thu, May 08, 2014 at 02:53:38PM -0700, Tony Lindgren wrote:
> > * Tomi Valkeinen <tomi.valkeinen@...com> [140507 02:15]:
> > > I don't have omap1 boards, and I don't know anyone that has. I don't
> > > even know if the omap1 fb is working or not...
> 
> OMAP1 fb is working very well. As a matter of fact, it's much more usable
> for me than fb on OMAP2/3 - apart from N900 (on which fb is working again
> with 3.15) none of my 4 other OMAP2/3 boards have a working display/fb
> in mainline yet. :-(

I hear you.. What do you have in the .config for omap1?
Would be nice to enable the framebuffer in omap1_defconfig?
 
> > > Tony, any idea of omap1's fb? Are you able to test this?
> > 
> > I have three omap1 boards in my rack that I use for my boot
> > testing. Tried to enable framebuffer but so far no luck on
> > any of them. So I'm not much of a help here. Looks like the
> > patch should work though..
> > 
> > Aaro & Janusz, care to take a look at the patch in this
> > thread?
> 
> I couldn't figure out how to enter this code path. Amstrad E3 & Nokia
> 770 will take the alloc_fbmem() path & exit, and based on quick look
> I could not see way to enter mmap_kern(). Is that dead code?

Could be. It may be something left from when we had code to keep
the bootloader logo displayed while booting kernel.

Regards,

Tony
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