CPU Frequency

• https://www.kernel.org/doc/Documentation/cpu-freq/core.txt
• https://www.kernel.org/doc/Documentation/cpu-freq/cpu-drivers.txt
• https://www.kernel.org/doc/Documentation/cpu-freq/cpufreq-stats.txt
• https://www.kernel.org/doc/Documentation/cpu-freq/governors.txt
• https://www.kernel.org/doc/Documentation/cpu-freq/user-guide.txt

• CPU Power Management
  • CPU Frequency scaling
    • [*] CPU Frequency scaling
      • Default CPUFreq governor
        • Userspace
      • <*> Generic DT based cpufreq driver

$ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq

$ cat /sys/devices/system/cpu/cpu1/cpufreq/scaling_available_governors

$ echo userspace > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

$ cat /sys/devices/system/cpu/cpu1/cpufreq/scaling_available_frequencies
 

$ echo <frequency> > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed