root@am335x-evm:~# uname -a Linux am335x-evm 4.19.94-gbe5389fd85 #1 PREEMPT Thu Oct 29 16:23:07 CDT 2020 armv7l GNU/Linux root@am335x-evm:~# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_freequencies 300000 600000 720000 800000 root@am335x-evm:~# cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq 720000 root@am335x-evm:~# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_driver cpufreq-dt root@am335x-evm:~# cat /sys/devices/system/cpu/cpu0/cpufreq/stats/trans_table From : To : 300000 600000 720000 800000 300000: 0 53 9 28 600000: 50 0 15 39 720000: 16 13 0 31 800000: 25 37 36 0 root@am335x-evm:~# cat /sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state 300000 28780 600000 441 720000 220 800000 3762 root@am335x-evm:~# cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq 600000 root@am335x-evm:~# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor ondemand root@am335x-evm:~# echo userspace > /sys/devices/system/cpu/cpu0/cpufreq/scaling__governor root@am335x-evm:~# cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq 300000 root@am335x-evm:~# echo 800000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_settspeed root@am335x-evm:~# cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq 800000 root@am335x-evm:~# cat /sys/devices/system/cpu/cpu0/cpufreq/stats/trans_table From : To : 300000 600000 720000 800000 300000: 0 58 10 33 600000: 55 0 15 40 720000: 18 13 0 32 800000: 28 38 38 0 root@am335x-evm:~# cat /sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state 300000 35230 600000 457 720000 222 800000 8452 root@am335x-evm:~#