[Bug 201201] New: [amdgpu] Can't raise power limit on Vega

[Bug 201201] New: [amdgpu] Can't raise power limit on Vega

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=201201

            Bug ID: 201201
           Summary: [amdgpu] Can't raise power limit on Vega
           Product: Drivers
           Version: 2.5
    Kernel Version: 4.19-rc4
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@kernel-bugs.osdl.org
          Reporter: mezin.alexander@gmail.com
        Regression: No

On Windows I can increase the power limit to +50% (150%) in wattman. On Linux
for some reason I can only set it lower than the stock value. Any attempts to
write a value that's bigger than the stock one into power1_cap fail with
"Invalid argument":

# echo 320000000 >power1_cap
-bash: echo: write error: Invalid argument

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[Bug 201201] [amdgpu] Can't raise power limit on Vega

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=201201

--- Comment #1 from Anthony Ruhier (anthony.ruhier@gmail.com) ---
My watercooled vega 64 is reaching the power limit (240W) very easily, with its
temperature staying at ~50°c. The only way to allow the boost to go further
(and it is honestly needed to get 60fps in 1440p) would be to undervolt, but it
will then be limited by the voltage, or to increase the power limit.

It would be really cool to allow a margin over the default power cap, like the
windows driver does.

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[Bug 201201] [amdgpu] Can't raise power limit on Vega

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=201201

Alex Deucher (alexdeucher@gmail.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |alexdeucher@gmail.com

--- Comment #2 from Alex Deucher (alexdeucher@gmail.com) ---
fixed:
https://cgit.freedesktop.org/~agd5f/linux/commit/?h=drm-next-4.20&id=f7becf9a0803030ae125189823328e2d62b90f7b

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[Bug 201201] [amdgpu] Can't raise power limit on Vega

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=201201

Aleksandr Mezin (mezin.alexander@gmail.com) changed:

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

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