[Bug 111584] "pp_od_clk_voltage" unavailable on Hawaii GPU (R9 390)

[Bug 111584] "pp_od_clk_voltage" unavailable on Hawaii GPU (R9 390)

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=111584

            Bug ID: 111584
           Summary: "pp_od_clk_voltage" unavailable on Hawaii GPU (R9 390)
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: enhancement
          Priority: not set
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: jonasdcdm@mailbox.org

I have recently tried to overclock/undervolt my GPU (R9 390) within Linux
thanks to the "amdgpu.ppfeaturemask=0xffffffff" boot parameter, but
unfortunately the file "pp_od_clk_voltage" is not available after a reboot.

Files "pp_dpm_mclk" and "pp_dpm_sclk" however show correct states and MHz,
except that they don't show voltage information. Changing
"power_dpm_force_performance_level" to manual allows me to make changes to
these files, I can force a state to be used and overclock it, but voltages
aren't showed and can't be modified.

I have read that Southern Island GPUs were not expected to get this feature
working, and I know Vega is compatible, but I can't find anywhere if Hawaii
(CIK) hardware should be able to expose this feature. I might be missing
something.

Is there any way to undervolt my GPU under Linux at the moment?

Specs:
OS: Arch Linux
Kernel: 5.2.11.arch1-1
Mesa: 19.1.6-1
Xorg: 1.20.5-2
Boot parameters: radeon.cik_support=0 amdgpu.cik_support=1 amdgpu.dpm=1
amdgpu.dc=1 amdgpu.ppfeaturemask=0xffffffff
GPU: [AMD/ATI] Hawaii PRO [Radeon R9 290/390] (rev 80)

Feel free to ask for more details and output if needed.

Thank you for your time.

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[Bug 111584] "pp_od_clk_voltage" unavailable on Hawaii GPU (R9 390)

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https://bugs.freedesktop.org/show_bug.cgi?id=111584

Martin Peres <martin.peres@free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |MOVED
             Status|NEW                         |RESOLVED

--- Comment #1 from Martin Peres <martin.peres@free.fr> ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
closed from further activity.

You can subscribe and participate further through the new bug through this link
to our GitLab instance: https://gitlab.freedesktop.org/drm/amd/issues/901.

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