Ryzen CPUs On Linux Finally See CCD Temperatures, Current + Voltage Reporting

[phoronix]

Phoronix: Ryzen CPUs On Linux Finally See CCD Temperatures, Current + Voltage Reporting

One of the few frustrations with the AMD Ryzen CPU support on Linux to date has been besides the often delayed support for CPU temperature reporting has been the mainline kernel not supporting voltage readings and other extra sensors. But that is finally changing with the "k10temp" driver being extended to include current and voltage reporting plus CCD temperature reporting on Zen 2 processors...

http://www.phoronix.com/scan.php?page=news_item&px=AMD-Ryzen-k10temp-CCD-V-Current

[shmerl]

Why doesn't AMD provide all this before CPUs are even out?

[mphuZ]

Ryzen Master for Linux is coming?

[doragasu]

Can't wait for this to get merged!

[Mathias]

modprobe: ERROR: could not insert 'zenpower': Operation not permitted

I guess Secure Boot is not happy about self-compiled modules...

[S.Pam]

I am using the 'zenpower' module to get the proper values:

# sensors
  acpitz-acpi-0
  Adapter: ACPI interface
  temp1: +16.8°C (crit = +20.8°C)
  
  zenpower-pci-00c3
  Adapter: PCI adapter
  SVI2_Core: +1.09 V
  SVI2_SoC: +1.32 V
  Tdie: +56.0°C (high = +70.0°C)
  Tctl: +56.0°C
  SVI2_P_Core: 16.96 W
  SVI2_P_SoC: 18.47 W
  SVI2_C_Core: +15.59 A
  SVI2_C_SoC: +14.07 A

https://github.com/ocerman/zenpower

[shmerl]

I am using the 'zenpower' module to get the proper values:

The author said he has no interest in upstreaming, so zenpower is a dead end.

[birdie]

For some reasons the patches don't apply cleanly even to 5.5-rc6 kernel, so I've applied the remaining bits manually.

Here's a patched file which works with kernels 5.4 and 5.5:

sha256sum k10temp.c
1d0183a67e7503ebaa6cffcd2e76b73f64bc9ee497f73635229b544813de9e9b  k10temp.c

Here's my output (Ryzen 7 3700X):

# sensors
k10temp-pci-00c3
Adapter: PCI adapter
Vcore:        +0.91 V
Vsoc:         +1.09 V
Tdie:         +35.0°C  (high = +70.0°C)
Tctl:         +35.0°C
Tccd1:        +35.0°C
Icore:        +3.95 A
Isoc:         +7.95 A

Here's under load (7z b):

Vcore:        +1.30 V
Vsoc:         +1.09 V
Tdie:         +63.4°C  (high = +70.0°C)
Tctl:         +63.4°C
Tccd1:        +64.0°C
Icore:       +27.01 A
Isoc:         +8.24 A

[S.Pam]

The author said he has no interest in upstreaming, so zenpower is a dead end.

Yea. But will k10temp be backported?

[Azrael5]

will the ever develop a cpu-z for linux operating systems?