[DPDK/other Bug 1915] AMD pstate power management support missing on Zen3

[bugzilla at dpdk.org]

http://bugs.dpdk.org/show_bug.cgi?id=1915

            Bug ID: 1915
           Summary: AMD pstate power management support missing on Zen3
           Product: DPDK
           Version: 26.03
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: other
          Assignee: dev at dpdk.org
          Reporter: stephen at networkplumber.org
  Target Milestone: ---

DPDK power management library doesn't work on this system because the CPU
frequency scaling is using later version of amd pstate.

$ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_driver 
amd-pstate-epp


$ lscpu
Architecture:                x86_64
  CPU op-mode(s):            32-bit, 64-bit
  Address sizes:             48 bits physical, 48 bits virtual
  Byte Order:                Little Endian
CPU(s):                      32
  On-line CPU(s) list:       0-31
Vendor ID:                   AuthenticAMD
  Model name:                AMD Ryzen 9 7945HX with Radeon Graphics
    CPU family:              25
    Model:                   97
    Thread(s) per core:      2
    Core(s) per socket:      16
    Socket(s):               1
    Stepping:                2

The problem is in drivers/power/amd_pstate_cpufreq

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