Re: [PATCH 5/7] clocksource/cadence_ttc: Overhaul clocksourcefrequency adjustment

From: SÃren Brinkmann
Date: Wed Nov 13 2013 - 12:15:27 EST


On Wed, Nov 13, 2013 at 01:33:52PM +0530, Viresh Kumar wrote:
> On 13 November 2013 00:31, Daniel Lezcano <daniel.lezcano@xxxxxxxxxx> wrote:
> > Hmm, it could be interesting if Viresh can give its opinion on this patch
> > [cc'ed].
>
> I am not sure if I understood the problem completely, but if this is about
> not allowing frequency transitions from cpufreq when we have started to
> suspend our system, then you must have a look at this thread:
>
> https://lkml.org/lkml/2013/10/24/369

Thanks for the link. I had problems in that direction at some point too.
But the current issue, is not cpufreq changing the frequency, but our
suspend code in prepare_late() causes a frequency change of this timer
when the PLLs are powered down (it's done through a CCF clk_set_parent()
operation).

SÃren


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/