[PATCH v5] ARM: new platform for Energy Micro's EFM32 Cortex-M3 SoCs

[Uwe Kleine-König]

On Wed, Dec 11, 2013 at 05:15:05PM -0800, Olof Johansson wrote:
> On Tue, Dec 10, 2013 at 05:55:16PM +0100, Uwe Kleine-König wrote:
> > There are still some missing parts (e.g. board support, device trees),
> > but with these bits added on top of this patch I can successfully boot a
> > EFM32GG-DK3750 board that uses an EFM32GG990F1024.
> > 
> > Signed-off-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>
> > ---
> > Hello,
> > 
> > I'd like to get this patch in for 3.14. The latest submission (v4,
> > Message-Id:1383562853-17202-4-git-send-email-u.kleine-koenig at pengutronix.de)
> > had some strict dependencies:
> >  - http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=7889/1
> >    to be able to drop Makefile.boot, this is still in Status=Incoming in
> >    rmk's patch tracker.
> >  - http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=7890/1
> >    to be able to drop the unused <mach/entry-macro.S>. This is already
> >    applied by rmk in his for-next branch, so it's not stable yet.
> >  - My series to drop <mach/timex.h> for !MULTI_PLATFORM. I'll send a
> >    pull request for that soon.
> >  - Patch "clocksource: time-efm32: Select CLKSRC_MMIO". This is part of
> >    a pull request by Daniel Lezcano that is expected to hit Linus T.'s
> >    tree for the next -rc. It currently sits as
> >    4ff3774e451fefb1781638c76230b3cf9a206b92 in Daniel's tree at
> >    git://git.linaro.org/people/daniel.lezcano/linux.git clockevents/fixes
> >    .
> > 
> > To make application a bit easier I added dummy files to drop the
> > dependencies on the first three items of the list above.
> > 
> > So it would be great if you could apply this patch when 4ff3774e4 went
> > in. (In case you want to apply it already now, this last dependency
> > could be work arounded, too, by adding a "select CLKSRC_MMIO" to
> > ARCH_EFM32.)
> > 
> > Other than that the only change since v4 is that I mention the exact
> > board/processor combo in the changelog now.
> > 
> > Thanks for considering this patch, best regards
> 
> Applied to next/soc with a slightly tweaked patch subject.
Thanks, but I wonder if it's a problem that the commit doesn't build? (i.e.

	git checkout f9b9cef1329c74607f33a20dce3f26e9a1f4ae96
	make efm32_defconfig
	make 

fails in

 - arch/arm/kernel/sigreturn_codes.S with
   "Error: selected processor does not support ARM opcodes" and a few
   variations.
 - drivers/clocksource/time-efm32.o fails to link, because next/soc
   isn't a decendant of 4ff3774e451f.

You can fix the latter by adding "select CLKSRC_MMIO" to ARCH_EFM32 if
you want. I don't remember what is the current state of the first
problem.)

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |