[Gta04-owner] Fwd: [beagleboard] 1ghz news?

[Dr. H. Nikolaus Schaller]

may be of interest for you:

again some progress on 1 GHz kernels (except for USB stability).


Anfang der weitergeleiteten E-Mail:

> Von: Robert Nelson <robertcnelson at gmail.com>
> Datum: 24. Juli 2013 15:51:56 MESZ
> An: beagleboard at googlegroups.com
> Betreff: Re: [beagleboard] 1ghz news?
> Antwort an: beagleboard at googlegroups.com
> 
> On Wed, Jul 24, 2013 at 6:41 AM, Robert Nelson <robertcnelson at gmail.com> wrote:
>> On Wed, Jul 24, 2013 at 6:09 AM, Nathaniel Lewis
>> <linux.robotdude at gmail.com> wrote:
>>> Okay everybody, I've put together a fork of RobertCNelson's
>>> armv7-multiplatform that adds the necessary driver and modifications to
>>> allow the Beagleboard xM to run safely at 1 GHz using TI's new adaptive body
>>> bias driver in the 3.11-rc2 linux kernel.  I'll put together a blog post
>>> tomorrow, err later, I've been up for 30 hours getting this working.  USB
>>> works, however the sprz319 erratum has to be ported to 3.11, meaning usb on
>>> the xM is unstable and most likely will cutout within 15 minutes.  Enjoy!
>>> https://github.com/Teknoman117/beagleboardxm-kernel
>> 
>> Sweet, thanks for working on this Nathaniel!
>> 
>> I just pulled the merge, I'm going to test it a few older xM's i have here too..
>> 
>> So for device trees in v3.11-rcX (ignoring the expansion boards, i
>> want to use the 3.8/bone capemgr/dtbos for that) we still need video
>> working and a easy to enable sprz319 workaround to be feature
>> identical with the old beagle board file..
> 
> Honest, for how long we've come... This just seems really cool. ;)
> 
> debian at arm:~$ cpufreq-info
> cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
> Report errors and bugs to cpufreq at vger.kernel.org, please.
> analyzing CPU 0:
>  driver: generic_cpu0
>  CPUs which run at the same hardware frequency: 0
>  CPUs which need to have their frequency coordinated by software: 0
>  maximum transition latency: 300 us.
>  hardware limits: 300 MHz - 1000 MHz
>  available frequency steps: 300 MHz, 600 MHz, 800 MHz, 1000 MHz
>  available cpufreq governors: conservative, ondemand, userspace,
> powersave, performance
>  current policy: frequency should be within 300 MHz and 1000 MHz.
>                  The governor "ondemand" may decide which speed to use
>                  within this range.
>  current CPU frequency is 300 MHz.
>  cpufreq stats: 300 MHz:43.52%, 600 MHz:2.20%, 800 MHz:0.00%, 1000
> MHz:54.28%  (3)
> 
> Regards,
> 
> -- 
> Robert Nelson
> http://www.rcn-ee.com/
> 
> -- 
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