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

From	Leonardo Canducci <leonardo.canducci@gmail.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	2015-07-25 17:10 +0200
Message-ID	<pQ9fj-85m-9@gated-at.bofh.it> (permalink)
References	(6 earlier) <pPKgV-5Gn-15@gated-at.bofh.it> <pPKJY-6e8-13@gated-at.bofh.it> <pPLmG-7cG-5@gated-at.bofh.it> <pPLmG-7cG-7@gated-at.bofh.it> <pPLmG-7cG-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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I got lost somewhere in that long thread but I saw cpufreq on cubie* works
for someone [0]. It's just a matter of loading two modules. I tried myself
on my jessie install (kernel from experimental) and can confirm that:

leo@cubetto:~$ sudo modprobe axp20x-regulator
leo@cubetto:~$ sudo modprobe cpufreq-dt
leo@cubetto:~$ ls /sys/devices/system/cpu/cpu0/cpufreq/
affected_cpus               related_cpus                   scaling_governor
cpuinfo_cur_freq            scaling_available_frequencies  scaling_max_freq
cpuinfo_max_freq            scaling_available_governors    scaling_min_freq
cpuinfo_min_freq            scaling_cur_freq               scaling_setspeed
cpuinfo_transition_latency  scaling_driver                 stats

How do I make this change persistent?

Thanks, Leonardo

[0]
http://forum.armbian.com/index.php/topic/108-no-cpufreq-support-in-cubietruck-debian-39-wheezy-405/?p=781

2015-07-24 15:23 GMT+02:00 Hans de Goede <hdegoede@redhat.com>:

> Hi,
>
> On 24-07-15 15:16, Maxime Ripard wrote:
>
>> On Fri, Jul 24, 2015 at 02:58:31PM +0200, Hans de Goede wrote:
>>
>>> There is slightly more to it then those 5 lines, but yes we should enable
>>> voltage scaling on more boards. This mostly requires someone to simply
>>> just do the work.
>>>
>>> I've a workshop on dts this weekend at our localhacker space and the plan
>>> is for the people attending to get some handson experience by them doing
>>> this work (amongst other things)  :)
>>>
>>
>> While I agree with you on the fact that more board needs to have the
>> regulators enabled, I really don't think that making some newbies
>> doing it without any schematics (and boards I guess?)
>>
>
> They will only be writing patches for boards which I have, and the patches
> will be tested on the actual boards before submitting them upstream.
>
> I will be collecting and double checking all patches before sending them
> to you.
>
> I will let you know if they blow up any boards :)  But I do not really
> expect that to happen.
>
> > is a good thing
>
>> when it comes to something that can permanently damage a board.
>>
>> I'd expect that such changes would be carefully done and tested before
>> being submitted.
>>
>
> And they will be, see above.
>
> Regards,
>
> Hans
>



-- 
Leonardo Canducci

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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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