Until I got to the last part I was a bit confused being on amdgpu and using dracut … then ah, yes, added drivers…
Except I dont use the package-owned file (and i wanted early kms):
/etc/dracut.conf.d/myflags.conf
compress="zstd"
omit_dracutmodules+=" brltty plymouth btrfs dmraid mdraid "
ro_mnt="yes"
kernel_cmdline="rd.skipfsck rootfstype=ext4 rd.luks=0 rd.lvm=0 rd.md=0 rd.dm=0"
/etc/dracut.conf.d/earlykms.conf
force_drivers+=" sd_mod ahci amdgpu ext4 "