May I know if anyone has tried Robert Nelson's latest beagleboard hack
that enables 1Ghz cpu freq? I am running xm at only 500Mhz running
Natty. If this patch works, it is a godsend! Thank you!
May I know if anyone has tried Robert Nelson's latest beagleboard hack
that enables 1Ghz cpu freq? I am running xm at only 500Mhz running
Natty.
With 3.0.x it's actually running at 800Mhz, but the BogoMIPS in
/proc/cpuinfo is not updated correctly since smp emulation is builtin
to support both cores on the panda.. With 3.1-rc9, it's better:
voodoo@beagle-xma-512mb:~$ uname -a
Linux beagle-xma-512mb 3.1.0-rc9-d4 #1 SMP Thu Oct 6 01:55:42 UTC 2011
armv7l GNU/Linux
voodoo@beagle-xma-512mb:~$ cat /proc/cpuinfo
Processor : ARMv7 Processor rev 2 (v7l)
processor : 0
BogoMIPS : 650.15
Features : swp half thumb fastmult vfp edsp thumbee neon vfpv3 tls
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x3
CPU part : 0xc08
CPU revision : 2
Hardware : OMAP3 Beagle Board
Revision : 0020
Serial : 0000000000000000
voodoo@beagle-xma-512mb:~$ sudo cpufreq-info
cpufrequtils 007: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to cpufreq@vger.kernel.org, please.
analyzing CPU 0:
driver: omap
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 - 800 MHz
available frequency steps: 300 MHz, 600 MHz, 800 MHz
available cpufreq governors: conservative, ondemand, userspace,
powersave, performance
current policy: frequency should be within 300 MHz and 800 MHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency is 800 MHz (asserted by call to hardware).
cpufreq stats: 300 MHz:4.02%, 600 MHz:2.42%, 800 MHz:93.56% (2087)
If this patch works, it is a godsend! Thank you!
It works in the sense it tries to enable 1Ghz option, but still with
3.1-rc9, the infrastructure in the kernel to support that isn't 100%
so it kernel opps and hard crashes on bootup.. (easy to test, just
enable the patch in my linux-dev script and try running it..)
Regards,
Thank you very much for the reply. Then, it seems there is no need to
apply the patch for the kernel on Natty. The reality is that it is
running at 800Mhz although in appearance, it seems to run on 500Mhz.
Forcing the kernel to run at 1Ghz will lead to instability. I think it
is advisable to keep to the kernel in your ubuntu-11.10-r0-minimal-
armel.tar.xz since it is already supporting 800Mhz.