From: Kevin Hilman <khilman@deeprootsystems.com>
To: Maximilian Schwerin <Maximilian.Schwerin@tigris.de>
Cc: linux-omap@vger.kernel.org
Subject: Re: Beagleboard xM crashes when being set to 800MHz with smartreflex on linux-omap-3.6-rc6
Date: Mon, 01 Oct 2012 17:00:25 -0700 [thread overview]
Message-ID: <87391xbv52.fsf@deeprootsystems.com> (raw)
In-Reply-To: <5448984682E7954C9BFF27F747A9C6CA56E38E@dolphin.TIGRIS.local> (Maximilian Schwerin's message of "Fri, 21 Sep 2012 08:45:16 +0200")
"Maximilian Schwerin" <Maximilian.Schwerin@tigris.de> writes:
> Hi,
>
> I've just built a linux-omap kernel at 3.6-rc6 using omap2plus_defconfig
> as basis for the kernel config.
>
> When I enable smartreflex and switch to 800MHz via
>
> echo 1 > /sys/kernel/debug/smartreflex/smartreflex_core/autocomp
> echo 1 > /sys/kernel/debug/smartreflex/smartreflex_mpu_iva/autocomp
> cpufreq-set -f 800MHz
>
> the board crashes. If I switch to 800MHz and enable smartreflex later
> nothing happens. This used to work in my 3.3 based kernel.
SmartReflex is kwown to be unstable in mainline and there are several
errata that still need fixing for it to be stable.
I strongly recommend you simply leave SR disabled.
Kevin
next prev parent reply other threads:[~2012-10-02 0:00 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-21 6:45 Beagleboard xM crashes when being set to 800MHz with smartreflex on linux-omap-3.6-rc6 Maximilian Schwerin
2012-09-21 8:34 ` Joni Lapilainen
2012-09-21 12:52 ` Robert Nelson
2012-09-21 19:16 ` Tony Lindgren
2012-10-02 0:00 ` Kevin Hilman [this message]
2012-10-08 8:50 ` AW: " Maximilian Schwerin
2012-10-10 10:49 ` jean-philippe francois
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