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

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Message-ID: <20140508215338.GE2198@atomide.com>
Date:	Thu, 8 May 2014 14:53:38 -0700
From:	Tony Lindgren <tony@...mide.com>
To:	Tomi Valkeinen <tomi.valkeinen@...com>
Cc:	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,
	Aaro Koskinen <aaro.koskinen@....fi>,
	Janusz Krzysztofik <jmkrzyszt@...il.com>
Subject: Re: [PATCH 13/13] video: omap: allow building on !MMU

* Tomi Valkeinen <tomi.valkeinen@...com> [140507 02:15]:
> On 24/04/14 15:28, Peter Griffin wrote:
> > From: Arnd Bergmann <arnd@...db.de>
> > 
> > The omap lcdc driver has an elaborate mmap_kern function
> > to map the frame buffer into kernel address space as
> > write-combined. This uses functions that are only available
> > on MMU-enabled builds.
> > 
> > It does seem equivalent to ioremap_wc though, so we should
> > be able to just use that instead.
> > 
> > This patch is build-tested only, it needs to be run on real
> > hardware before applying.
> 
> 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...
> 
> 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?

Regards,

Tony
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