https://bugs.freedesktop.org/show_bug.cgi?id=107689
--- Comment #4 from Andrey Grodzovsky andrey.grodzovsky@amd.com --- Created attachment 141310 --> https://bugs.freedesktop.org/attachment.cgi?id=141310&action=edit 0001-drm-amdgpu-Only-retrieve-GPU-address-of-GART-table-a.patch
Please try with our latest kernel from here https://cgit.freedesktop.org/~agd5f/linux/log/?h=amd-staging-drm-next + the attached patch on top. Also just to be sure try to use latest firmware for amdgpu from here https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/...
P.S Don't forget to update your initramfs after you copy the firmware files to your /lib/firmware/XXX locatiotion