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Rockpi4/CPU overclocking

    ROCK Pi 4 >  CPU overclocking

ROCK Pi 4 has 6 core CPU Dual Cortex-72 and qual Cortex-A53-RK3399, Dual Cortex-72, frequency 1.8GHz with qual Cortex-A53, frequency 1.4GHz.

Get CPUx Max Frequency

   $ cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq    #Cortex-A53 max freqency.
   $ cat /sys/devices/system/cpu/cpu4/cpufreq/cpuinfo_max_freq    #Cortex-A72 max freqency.

In /sys/devices/system/cpu/ has cpu0-cpu5 directory,cpu0-cpu3 is Cortex-A53 directory and cpu4-cpu5 is Cortex-A72 directory.

CPU Overclocking

Change the /boot/hw_intfc.conf:

   # setting cpu frequency over-2GHz                                               
   intfc:dtoverlay=cpufreq

Reboot your ROCK Pi4 and you can see the max CPU frequenct is over 2GHz dual Cortex-A72, over 1.5GHz qual Cortex-A53.