Comment # 23
on bug 76490
from dex+fdobugzilla@dragonslave.de
I did some checks using the old profile based aproach for PM and switched
between the states.
Following are the data from /sys/kernel/debug/dri/0/radeon_pm_info when
switching via echo X > /sys/class/drm/card0/device/power_profile
Default:
=================================
default engine clock: 1080000 kHz
current engine clock: 149990 kHz
default memory clock: 1400000 kHz
current memory clock: 149990 kHz
voltage: 1206 mV
PCIE lanes: 8
Low:
=================================
default engine clock: 1080000 kHz
current engine clock: 299990 kHz
default memory clock: 1400000 kHz
current memory clock: 149990 kHz
voltage: 875 mV
PCIE lanes: 8
Mid:
=================================
default engine clock: 1080000 kHz
current engine clock: 299990 kHz
default memory clock: 1400000 kHz
current memory clock: 149990 kHz
voltage: 875 mV
PCIE lanes: 8
High:
=================================
default engine clock: 1080000 kHz
current engine clock: 1080000 kHz
default memory clock: 1400000 kHz
current memory clock: 1399990 kHz
voltage: 1206 mV
PCIE lanes: 8
The last state (high) results in immediate freeze.