cd /sys/devices/system/cpu/cpu0/
echo "userspace" > scaling_governor
echo "N" > scaling_setspeed
N can be 104000, 208000, 312000, 416000, 520000, 624000, or may be other freq in "scaling_available_governors"
It is working, but I am not sure the clock freq is really changed or not?
To change cpu voltage, you may:
echo "V" > cpu-voltage
V can be 900,1100,1200,1300,1400,1500, the value stored in show_frequency_and_voltage.
But I get problem like dvfm way when change cpu voltage.
To 2or0:
Is it possible to check the interface in the kernel and patch when you get time?
Please tell me,scaling functions are worked, or not?