CPU Frequency Scaling not available for 3.12

beagleboard / kernel

Kernel for the beagleboard.org boards

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CPU Frequency Scaling not available for 3.12 #80

Closed bigeagle closed 10 years ago

bigeagle commented 10 years ago

Hi,

Recently I updated my BBB kernel to 3.12.3-bone9, but after that, CPU frequency scaling became unavailable.

There's no cpufreq in /sys/devices/system/cpu/cpu0/, and cpupower frequency-info returns:

analyzing CPU 0:
  no or unknown cpufreq driver is active on this CPU

I'm using default config and didn't modify kernel code, and the installed distribution is archlinuxarm.

cheers,

RobertCNelson commented 10 years ago

Correct that's one of the defects of v3.12.x, looking at the v3.13-rcX merge window this functionality should now be in mainline.. So we just need a list of cherry picks.. ;)

RobertCNelson commented 10 years ago

This is fixed in both 3.12/3.13 branches.. (add opp points)