Missing CPUFreq driver in Debian


There is no cpufreq folder under /sys/devices/system/cpu/cpu*/ & cpufreq-info shows that

analyzing CPU 0:
  no or unknown cpufreq driver is active on this CPU

And there is no cpudriver under /lib/modules/4.15-hikey/kernel/arch/arm64

So can I get the real-time cpu frequency somewhere else? My system version is

Linux linaro-developer 4.15-hikey #1 SMP PREEMPT Sat Mar 10 22:41:04 UTC 2018 aarch64 GNU/Linux


The debian build is just a snapshot build and does not have full hardware enablement. I don’t think any cpufreq driver exists for the kernel included by default.


I followed this link Using a different kernel with Debian & used this version of snapshots .
It works! Thx a lot!