Enabling pstate doesn't work

[sammcj]

go install github.com/sjug/go-zenstates@latest
go: downloading github.com/sjug/go-zenstates v0.0.0-20170902014824-71743512d9a6


go-zenstates -l
Enabled - FID = 98 - DID = 8 - VID = C9 - Ratio = 38.00 - vCore = 0.29375
Enabled - FID = 78 - DID = 8 - VID = 79 - Ratio = 30.00 - vCore = 0.79375
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled

go-zenstates -enable -p 2
Current pstate2: Enabled - FID = 98 - DID = 8 - VID = C9 - Ratio = 38.00 - vCore = 0.29375
Enabled pstate2

go-zenstates -enable -p 3
Current pstate3: Enabled - FID = 98 - DID = 8 - VID = C9 - Ratio = 38.00 - vCore = 0.29375
Enabled pstate3

go-zenstates -l
Enabled - FID = 98 - DID = 8 - VID = C9 - Ratio = 38.00 - vCore = 0.29375
Enabled - FID = 78 - DID = 8 - VID = 79 - Ratio = 30.00 - vCore = 0.79375
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled

analyzing CPU 8:
  driver: amd-pstate-epp
  CPUs which run at the same hardware frequency: 8
  CPUs which need to have their frequency coordinated by software: 8
  maximum transition latency:  Cannot determine or is not supported.
  hardware limits: 400 MHz - 5.17 GHz
  available cpufreq governors: performance powersave
  current policy: frequency should be within 400 MHz and 5.17 GHz.
                  The governor "powersave" may decide which speed to use
                  within this range.
  current CPU frequency: Unable to call hardware
  current CPU frequency: 4.44 GHz (asserted by call to kernel)
  boost state support:
    Supported: yes
    Active: yes
    Boost States: 0
    Total States: 2
    Pstate-P0:  3800MHz
    Pstate-P1:  3000MHz

• Ryzen 7600
• Fedora 38 (Kernel 6.4, also tried 6.3)
• driver: amd-pstate-epp