* kexec: cpufreq: omap3: hangs in dpll3xxx.c::_omap3_dpll_write_clken()
@ 2012-12-11 15:03 Paolo Pisati
2012-12-11 20:20 ` Paul Walmsley
0 siblings, 1 reply; 5+ messages in thread
From: Paolo Pisati @ 2012-12-11 15:03 UTC (permalink / raw)
To: linux-omap
I've been experiencing solid hangs on my beaglexm with v3.7 after
kexec:
here is my .config (omap2plus + EHCI/OHCI + CPUFREQ + DEVTMP):
http://people.canonical.com/~ppisati/omap3_cpufreq_kexec/config
here is the diff i added to get some debugging:
http://people.canonical.com/~ppisati/omap3_cpufreq_kexec/dpll-debug.diff
here is a trace of the kexeced kernel:
http://people.canonical.com/~ppisati/omap3_cpufreq_kexec/kexec-boot.txt
Since i'n not familiar with those dplls, can anyone shed some light?
--
bye,
p.
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: kexec: cpufreq: omap3: hangs in dpll3xxx.c::_omap3_dpll_write_clken()
2012-12-11 15:03 kexec: cpufreq: omap3: hangs in dpll3xxx.c::_omap3_dpll_write_clken() Paolo Pisati
@ 2012-12-11 20:20 ` Paul Walmsley
2012-12-11 20:32 ` Paul Walmsley
2012-12-12 8:32 ` Paolo Pisati
0 siblings, 2 replies; 5+ messages in thread
From: Paul Walmsley @ 2012-12-11 20:20 UTC (permalink / raw)
To: Paolo Pisati; +Cc: linux-omap
On Tue, 11 Dec 2012, Paolo Pisati wrote:
> I've been experiencing solid hangs on my beaglexm with v3.7 after
> kexec:
Does it crash if you boot v3.7 directly from the bootloader, i.e., without
kexec?
- Paul
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: kexec: cpufreq: omap3: hangs in dpll3xxx.c::_omap3_dpll_write_clken()
2012-12-11 20:20 ` Paul Walmsley
@ 2012-12-11 20:32 ` Paul Walmsley
2012-12-12 8:53 ` Paolo Pisati
2012-12-12 8:32 ` Paolo Pisati
1 sibling, 1 reply; 5+ messages in thread
From: Paul Walmsley @ 2012-12-11 20:32 UTC (permalink / raw)
To: Paolo Pisati; +Cc: linux-omap
On Tue, 11 Dec 2012, Paul Walmsley wrote:
> On Tue, 11 Dec 2012, Paolo Pisati wrote:
>
> > I've been experiencing solid hangs on my beaglexm with v3.7 after
> > kexec:
>
> Does it crash if you boot v3.7 directly from the bootloader, i.e., without
> kexec?
Also you might want to verify that the voltage on VDD1 is what the kernel
thinks it is:
[ 5.638183] notification 0 of frequency transition to 800000 kHz
[ 5.644775] cpu cpu0: cpufreq-omap: 300 MHz, -1 mV --> 800 MHz, 1325 mV
You can probe this with a multimeter on one side of the VDD1 inductor.
It's on the underside of the Beagle-XM near the DC input jack - it's
marked "L4" on the silkscreen text.
- Paul
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: kexec: cpufreq: omap3: hangs in dpll3xxx.c::_omap3_dpll_write_clken()
2012-12-11 20:32 ` Paul Walmsley
@ 2012-12-12 8:53 ` Paolo Pisati
0 siblings, 0 replies; 5+ messages in thread
From: Paolo Pisati @ 2012-12-12 8:53 UTC (permalink / raw)
To: Paul Walmsley; +Cc: Paolo Pisati, linux-omap
On Tue, Dec 11, 2012 at 08:32:25PM +0000, Paul Walmsley wrote:
> On Tue, 11 Dec 2012, Paul Walmsley wrote:
>
> > On Tue, 11 Dec 2012, Paolo Pisati wrote:
> >
> > > I've been experiencing solid hangs on my beaglexm with v3.7 after
> > > kexec:
> >
> > Does it crash if you boot v3.7 directly from the bootloader, i.e., without
> > kexec?
>
> Also you might want to verify that the voltage on VDD1 is what the kernel
> thinks it is:
>
> [ 5.638183] notification 0 of frequency transition to 800000 kHz
> [ 5.644775] cpu cpu0: cpufreq-omap: 300 MHz, -1 mV --> 800 MHz, 1325 mV
>
> You can probe this with a multimeter on one side of the VDD1 inductor.
> It's on the underside of the Beagle-XM near the DC input jack - it's
> marked "L4" on the silkscreen text.
uhm no, my multimeter says it's around 113mV...
--
bye,
p.
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: kexec: cpufreq: omap3: hangs in dpll3xxx.c::_omap3_dpll_write_clken()
2012-12-11 20:20 ` Paul Walmsley
2012-12-11 20:32 ` Paul Walmsley
@ 2012-12-12 8:32 ` Paolo Pisati
1 sibling, 0 replies; 5+ messages in thread
From: Paolo Pisati @ 2012-12-12 8:32 UTC (permalink / raw)
To: Paul Walmsley; +Cc: Paolo Pisati, linux-omap
On Tue, Dec 11, 2012 at 08:20:13PM +0000, Paul Walmsley wrote:
> On Tue, 11 Dec 2012, Paolo Pisati wrote:
>
> > I've been experiencing solid hangs on my beaglexm with v3.7 after
> > kexec:
>
> Does it crash if you boot v3.7 directly from the bootloader, i.e., without
> kexec?
nope, works perfectly fine when booted from the bootlader.
--
bye,
p.
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2012-12-12 8:53 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
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2012-12-11 15:03 kexec: cpufreq: omap3: hangs in dpll3xxx.c::_omap3_dpll_write_clken() Paolo Pisati
2012-12-11 20:20 ` Paul Walmsley
2012-12-11 20:32 ` Paul Walmsley
2012-12-12 8:53 ` Paolo Pisati
2012-12-12 8:32 ` Paolo Pisati
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