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CPU speed 600MHz instead of 720MHz

posted in Linux Kernel
Saturday, September 22 2012, 08:09 PM
0
Hi. I've upgraded by IGEPv2 to x-loader 2.5.0-1 and kernel to v2.6.37-4, since then CPU speed is somehow limited to 600MHz.

cpufreq-info shows me that available frequencies are up to 720MHz, but it refuses me to set higher frequency than 600MHz.

sudo cpufreq-set -g userspace
sudo cpufreq-set -f 720000
cpufreq-info
  hardware limits: 125 MHz - 720 MHz
  available frequency steps: 125 MHz, 250 MHz, 500 MHz, 550 MHz, 600 MHz, 720 MHz
  current policy: frequency should be within 125 MHz and 720 MHz.
  current CPU frequency is 600 MHz.

How can I get CPU running on proper frequency 720MHz?

Accepted Answer

mcaro
mcaro
Offline
Friday, September 28 2012, 12:49 PM - #permalink
0
Hi gashtaan,

kernel 2.6.37 not implement the right smartreflex calculations for 720Mhz, attached you have the patch for enable it.

Regards
Manel
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