Banana Pi BPI-R3 OpenWrt CPU Frequency

Banana Pi Router design BPI-R3/R3 Mini(MT7986)
1

I noticed the cpu frequency is not present on OpenWrt is a bug or not yet implemented on this SoC?

root@BPI-R3:/# cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_cur_freq
cat: can't open '/sys/devices/system/cpu/cpu*/cpufreq/scaling_cur_freq': No such file or directory


root@BPI-R3:/# cd /sys/devices/system/cpu/cpufreq
root@BPI-R3:/sys/devices/system/cpu/cpufreq# ls
root@BPI-R3:/sys/devices/system/cpu/cpufreq# 

root@BPI-R3:/sys/devices/system/cpu/cpufreq# lscpu
Architecture:            aarch64
  CPU op-mode(s):        32-bit, 64-bit
  Byte Order:            Little Endian
CPU(s):                  4
  On-line CPU(s) list:   0-3
Vendor ID:               ARM
  Model name:            Cortex-A53
    Model:               4
    Thread(s) per core:  1
    Core(s) per cluster: 4
    Socket(s):           -
    Cluster(s):          1
    Stepping:            r0p4
    BogoMIPS:            26.00
    Flags:               fp asimd evtstrm aes pmull sha1 sha2 crc32 cpuid
Vulnerabilities:         
  Itlb multihit:         Not affected
  L1tf:                  Not affected
  Mds:                   Not affected
  Meltdown:              Not affected
  Mmio stale data:       Not affected
  Retbleed:              Not affected
  Spec store bypass:     Not affected
  Spectre v1:            Mitigation; __user pointer sanitization
  Spectre v2:            Not affected
  Srbds:                 Not affected
  Tsx async abort:       Not affected