Olimex Support Forum

OLinuXino Android / Linux boards and System On Modules => A20 => Topic started by: hnb2907 on November 06, 2013, 12:24:39 PM

Title: CPU Governor/Fixed CPU Frequency
Post by: hnb2907 on November 06, 2013, 12:24:39 PM
Hi folks,

I'm running the debian kernel (3.4.43+ #10).

Is it possible to disable the CPU frequency governor select only 912MHz as the default CPU frequency?  Preferably without rebuilding the kernel? 

I'm sure I've done something in the past where I echo'd something in a location in /sys


Thanks,
Chris.
Title: Re: CPU Governor/Fixed CPU Frequency
Post by: KNK on November 06, 2013, 12:47:58 PM
Quote from: hnb2907 on November 06, 2013, 12:24:39 PM
I'm sure I've done something in the past where I echo'd something in a location in /sys

You mean /sys/bus/cpu/devices/cpu0/cpufreq/scaling_* files, but what to echo and in which one depends on what you want to do
Title: Re: CPU Governor/Fixed CPU Frequency
Post by: tlhingan on November 06, 2013, 05:09:59 PM
What are you trying to do exactly?
Speed it up? Throttle it down? Save battery power?
Title: Re: CPU Governor/Fixed CPU Frequency
Post by: hnb2907 on November 07, 2013, 01:23:09 AM
thanks all, sorted by installing cpufreq utils and selecting the performance profile :)