https://bugzilla.kernel.org/show_bug.cgi?id=194761
--- Comment #62 from Jean Delvare (jdelvare@suse.de) --- Created attachment 256949 --> https://bugzilla.kernel.org/attachment.cgi?id=256949&action=edit drm/amdgpu/gfx6: [TEST] fix tiling setup for oland (for v4.11)
Siyia, this is a test patch for kernel v4.11.4. It uses the P4_8x16 config for all Oland variants, please test it and report if it fixes the problem for you.
This is most likely NOT suitable for upstream, it is only a test patch. At least assuming some Oland cards are working with the current code.