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Groups > linux.debian.kernel > #50273

Bug#793185: [linux-sunxi] Re: forwarding a bug: cpufreq missing in debian stable on a cuibeboard

From Maxime Ripard <maxime.ripard@free-electrons.com>
Newsgroups linux.debian.bugs.dist, linux.debian.kernel
Subject Bug#793185: [linux-sunxi] Re: forwarding a bug: cpufreq missing in debian stable on a cuibeboard
Date 2015-07-24 14:30 +0200
Message-ID <pPKgV-5Gn-7@gated-at.bofh.it> (permalink)
References (1 earlier) <pPIf8-2Nv-1@gated-at.bofh.it> <pPIyt-3am-1@gated-at.bofh.it> <pPJuz-4vX-33@gated-at.bofh.it> <pPJNV-4T4-13@gated-at.bofh.it> <pPK7g-5uX-5@gated-at.bofh.it>
Organization linux.* mail to news gateway

Cross-posted to 2 groups.

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On Fri, Jul 24, 2015 at 05:12:57AM -0700, Thomas Kaiser wrote:
> > > What puzzles me is that exactly the same kernel (I used Igor Pečovnik's 
> > > build system) provides working cpufreq support on 5 A20 devices and one 
> > it 
> > > fails. 
> >
> > And none of those 5 use CPU voltage scaling. 
> >
> 
> Maybe I don't understand the whole meaning. But on a Banana Pi a few weeks 
> ago [1] and on a pcDuino3 Nano I used the last days for USB/UAS benchmarks 
> the cpufreq stuff was available below /sys/devices/system/cpu/cpu0/cpufreq/ 
> and altering parameters always had an effect.

Yes, and it had an effect on the frequency, not the voltage.

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

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Thread

Bug#793185: [linux-sunxi] Re: forwarding a bug: cpufreq missing in debian stable on a cuibeboard Hans de Goede <hdegoede@redhat.com> - 2015-07-24 12:40 +0200
  Bug#793185: [linux-sunxi] Re: forwarding a bug: cpufreq missing in debian stable on a cuibeboard Maxime Ripard <maxime.ripard@free-electrons.com> - 2015-07-24 14:00 +0200
    Bug#793185: [linux-sunxi] Re: forwarding a bug: cpufreq missing in debian stable on a cuibeboard Maxime Ripard <maxime.ripard@free-electrons.com> - 2015-07-24 14:30 +0200
    Bug#793185: [linux-sunxi] Re: forwarding a bug: cpufreq missing in debian stable on a cuibeboard m.silentcreek@gmail.com - 2015-07-24 14:30 +0200
      Bug#793185: [linux-sunxi] Re: forwarding a bug: cpufreq missing in debian stable on a cuibeboard Hans de Goede <hdegoede@redhat.com> - 2015-07-24 15:40 +0200
        Bug#793185: [linux-sunxi] Re: forwarding a bug: cpufreq missing in debian stable on a cuibeboard Chen-Yu Tsai <wens@csie.org> - 2015-07-25 17:10 +0200
          Bug#793185: [linux-sunxi] Re: forwarding a bug: cpufreq missing in debian stable on a cuibeboard Ian Campbell <ijc@debian.org> - 2015-07-25 17:40 +0200
            Bug#793185: [linux-sunxi] Re: forwarding a bug: cpufreq missing in debian stable on a cuibeboard Chen-Yu Tsai <wens@csie.org> - 2015-07-30 10:00 +0200
              Bug#793185: [linux-sunxi] Re: forwarding a bug: cpufreq missing in debian stable on a cuibeboard Ian Campbell <ijc@debian.org> - 2015-08-01 12:00 +0200
        Bug#793185: [linux-sunxi] Re: forwarding a bug: cpufreq missing in debian stable on a cuibeboard Leonardo Canducci <leonardo.canducci@gmail.com> - 2015-07-25 17:10 +0200
      Bug#793185: [linux-sunxi] Re: forwarding a bug: cpufreq missing in debian stable on a cuibeboard Hans de Goede <hdegoede@redhat.com> - 2015-07-24 15:40 +0200
        Bug#793185: [linux-sunxi] Re: forwarding a bug: cpufreq missing in debian stable on a cuibeboard Maxime Ripard <maxime.ripard@free-electrons.com> - 2015-07-24 16:10 +0200
      Bug#793185: [linux-sunxi] Re: forwarding a bug: cpufreq missing in debian stable on a cuibeboard Maxime Ripard <maxime.ripard@free-electrons.com> - 2015-07-24 15:40 +0200
      Bug#793185: [linux-sunxi] Re: forwarding a bug: cpufreq missing in debian stable on a cuibeboard Maxime Ripard <maxime.ripard@free-electrons.com> - 2015-07-24 15:40 +0200
      Bug#793185: [linux-sunxi] Re: forwarding a bug: cpufreq missing in debian stable on a cuibeboard m.silentcreek@gmail.com - 2015-07-24 16:10 +0200

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