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AMDGPU
amdgpu is the kernel driver for modern AMD video hardware.
Firmware
AMDGPU is dependent on many firmware files, usually distributed from the linux-firmware git. Necessary firmware files can be found via modinfo amdgpu | grep ^firmware:.
Module parameters
Parameters can be specified on the kernel command line via amdgpu.PARAM=VALUE, or in a modprobe conf file via options amdgpu PARAM=VALUE. Current info about the parameters can be found via modinfo amdgpu | grep ^parm:. Each will correspond to a file in /sys/module/amdgpu/parameters.