[Bug 109887] vega56 undervolting/overclocking voltage issues

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109887

--- Comment #4 from kgkggl+bugs.freedesktop.org at gmail.com ---
(In reply to fin4478 from comment #3)
> You need to have a kernel command line parameter and c is used to commit
> changes. See: https://wiki.archlinux.org/index.php/AMDGPU#Overclocking

Yes, I use "c" to commit changes, the GPU frequency can always be modified, but
the voltage does not take effect.

I use parameters:

# echo s 1 974 825 > /sys/class/drm/card0/device/pp_od_clk_voltage
# echo s 2 1096 850 > /sys/class/drm/card0/device/pp_od_clk_voltage
# echo s 3 1218 875 > /sys/class/drm/card0/device/pp_od_clk_voltage
# echo s 4 1340 900 > /sys/class/drm/card0/device/pp_od_clk_voltage
# echo s 5 1462 925 > /sys/class/drm/card0/device/pp_od_clk_voltage
# echo s 6 1584 950 > /sys/class/drm/card0/device/pp_od_clk_voltage
# echo s 7 1584 950 > /sys/class/drm/card0/device/pp_od_clk_voltage
# echo c > /sys/class/drm/card0/device/pp_od_clk_voltage

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