From: Lucas Stach <l.stach@pengutronix.de>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>,
Viresh Kumar <viresh.kumar@linaro.org>,
Linux PM list <linux-pm@vger.kernel.org>,
Linux-sh list <linux-sh@vger.kernel.org>
Subject: Re: [RESEND 2] cpufreq: dt: disable unsupported OPPs
Date: Fri, 24 Oct 2014 12:19:49 +0200 [thread overview]
Message-ID: <1414145989.6267.3.camel@pengutronix.de> (raw)
In-Reply-To: <CAMuHMdXAYhAEFNLCcq91xctYwaCZnJt-V+U+vYy1iC5Kb=qqjw@mail.gmail.com>
Geert,
Am Donnerstag, den 23.10.2014, 16:43 +0200 schrieb Geert Uytterhoeven:
> Hi Lucas,
>
> On Thu, Oct 23, 2014 at 4:10 PM, Lucas Stach <l.stach@pengutronix.de> wrote:
> > Am Donnerstag, den 23.10.2014, 11:19 +0200 schrieb Geert Uytterhoeven:
> >> On Tue, Oct 21, 2014 at 4:19 PM, Rafael J. Wysocki <rjw@rjwysocki.net> wrote:
> >> > On Thursday, October 16, 2014 12:08:20 PM Lucas Stach wrote:
> >> >> If the regulator connected to the CPU voltage plane doesn't
> >> >> support an OPP specified voltage with the acceptable tolerance
> >> >> it's better to just disable the OPP instead of constantly
> >> >> failing the voltage scaling later on.
> >> >>
> >> >> Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
> >> >> Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
> >> >
> >> > Applied, thanks!
> >>
> >> This commit
> >> (http://git.kernel.org/cgit/linux/kernel/git/rafael/linux-pm.git/commit/?h=linux-next&id=d7bbd4cd0359d781b67c9e621d4bbfd1bb2f3783)
> >> causes a boot regression on r8a7791/koelsch. It hangs after:
> >>
> >> TCP: cubic registered
> >> Initializing XFRM netlink socket
> >> NET: Registered protocol family 17
> >> NET: Registered protocol family 15
> >> ata1: link resume succeeded after 1 retries
> >> ata1: SATA link down (SStatus 0 SControl 300)
> >> random: nonblocking pool is initialized
>
> >> Reverting this commit fixes the issue, and makes the boot continue with:
> >>
> >> cpufreq: __cpufreq_add_dev: CPU0: Running at unlisted freq: 1300000 KHz
> >> cpufreq: __cpufreq_add_dev: CPU0: Unlisted initial frequency
> >> changed to: 1312500 KHz
> >> cpu cpu1: failed to get cpu-2 clock: 1
> >> cpufreq_dt: cpufreq_init: Failed to allocate resources: -2
> >>
> >
I thought a bit more about about this to make sure this isn't a fault on
my side, but can't seem to make any sense out of this. Can you please
print out the value of opp_freq in each iteration of the while loop and
also the return value of regulator_is_supported_voltage()? This would
help me a lot to understand what's happening here.
Thanks,
Lucas
--
Pengutronix e.K. | Lucas Stach |
Industrial Linux Solutions | http://www.pengutronix.de/ |
next prev parent reply other threads:[~2014-10-24 10:19 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-30 15:29 [PATCH resend] cpufreq: dt: disable unsupported OPPs Lucas Stach
2014-09-30 19:53 ` Rafael J. Wysocki
2014-10-01 3:29 ` Viresh Kumar
2014-10-01 20:39 ` Rafael J. Wysocki
2014-10-02 5:24 ` Viresh Kumar
2014-10-02 11:57 ` Lucas Stach
2014-10-02 17:33 ` Rafael J. Wysocki
2014-10-08 22:36 ` Rafael J. Wysocki
2014-10-09 3:43 ` Viresh Kumar
2014-10-12 20:27 ` Rafael J. Wysocki
2014-10-16 10:08 ` [RESEND 2] " Lucas Stach
2014-10-21 14:19 ` Rafael J. Wysocki
2014-10-23 9:19 ` Geert Uytterhoeven
2014-10-23 14:10 ` Lucas Stach
2014-10-23 14:43 ` Geert Uytterhoeven
2014-10-23 15:13 ` Lucas Stach
2014-10-23 21:26 ` Rafael J. Wysocki
2014-10-24 0:26 ` Khiem Nguyen
2014-10-24 10:19 ` Lucas Stach [this message]
2014-10-24 12:30 ` Geert Uytterhoeven
2014-10-24 12:39 ` Lucas Stach
2014-10-24 13:01 ` Rafael J. Wysocki
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