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