[PATCH v2 0/5] ARM: omap[34]: Thumb-2 compatibility fixes

Santosh Shilimkar santosh.shilimkar at ti.com
Fri Feb 4 06:16:57 EST 2011


> -----Original Message-----
> From: Dave Martin [mailto:dave.martin at linaro.org]
> Sent: Friday, February 04, 2011 4:33 PM
> To: Santosh Shilimkar
> Cc: linux-arm-kernel at lists.infradead.org; Tony Lindgren; Jean Pihet-
> XID; linux-omap at vger.kernel.org; Nicolas Pitre
> Subject: Re: [PATCH v2 0/5] ARM: omap[34]: Thumb-2 compatibility
> fixes
>
> On Fri, Feb 4, 2011 at 10:45 AM, Santosh Shilimkar
> <santosh.shilimkar at ti.com> wrote:
> > Dave,
> >> -----Original Message-----
> >> From: Dave Martin [mailto:dave.martin at linaro.org]
> >> Sent: Thursday, February 03, 2011 11:33 PM
> >> To: linux-arm-kernel at lists.infradead.org
> >> Cc: Dave Martin; Tony Lindgren; Santosh Shilimkar; Jean Pihet;
> >> linux-omap at vger.kernel.org; Nicolas Pitre
> >> Subject: [PATCH v2 0/5] ARM: omap[34]: Thumb-2 compatibility
> fixes
> >>
> >> This set of patches, along with some other patches under
> >> discussion on alkml, should enable omap3 and omap4 kernels to be
> >> built with CONFIG_THUMB2_KERNEL.
> >>
> >> This patch set builds on recent cleanup done by the omap
> >> maintainers.
> >>
> >> It is also more aggressive than my last post: all affected
> >> low-level code is now built in Thumb-2.  At least some of this
> >> code definitely works, but whether the Secure firmware can talk
> >> to Thumb-2 code properly is unproven:
> >> in particular, I could use some help/advice from the omap
> >> community for validating that the low-level power management
> >> interactions actually work with this patch set.
> >>
> >> I've done simple "does it boot?" testing by building a single
> >> kernel with CONFIG_SMP_ON_UP and CONFIG_THUMB2_KERNEL enabled
> >> which works on Beagle xM A2 and Panda A1.
> >
> > I have boot tested this series on OMAP3430 and OMAP4430. Also
> > tested the RETENTION and OFF mode in suspend on OMAP3.
>
> Which tree did you use to test this?  It didn't seem to work for me
> --
> sometimes the system wouldn't suspend, complaining about USB suspend
> errors; and other times I couldn't bring it out of suspend (by
> poking
> a USB input device).
>
> I might be doing something wrong...
>
I should have mentioned this.
Used Kevins pm branch to test these features.
git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap-pm.git


> > I couldn't test the DVFS because it isn't in mainline yet
> > but the changes doesn't looks to break anything.
> >
> > So if you like, you can add
> > Tested-by: Santosh Shilimkar <santosh.shilimkar at ti.com>
> > Acked-by: Santosh Shilimkar <santosh.shilimkar at ti.com>
> >
>
> Thanks, that's great.
>
> If there some other tree with DVFS working which I could try?  Even
> if
> these patches don't apply, I may be able to test whether the changes
> should work.
>
DVFS support is getting added and one series was posted by Vishwa.
The link for the same is :
http://www.spinics.net/lists/linux-omap/msg44393.html

Regards,
Santosh



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