There are many posts explaining how to enable the DPM (dynamic power management) feature of AMD GPUs. I need to do some testing and require to disable it but I'm not sure how.
For Radeon driver, I read it is required to modify /etc/default/grub, by setting
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash radeon.dpm=1".
May sound obvious, but would it be enough for AMDGPU to do something like this?:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash amdgpu.dpm=0"