https://bugs.freedesktop.org/show_bug.cgi?id=90263
--- Comment #14 from Alex Deucher alexdeucher@gmail.com --- (In reply to Todd from comment #13)
The following may or may not be relevant to this issue.
"Fixes for SI fan handling"
http://cgit.freedesktop.org/%7Eagd5f/linux/commit/?h=drm-next-3.20- wip&id=e06b000d6619ac9b60b0724c82dc58141a86a3dc
"Enable smc fan control on SI"
http://cgit.freedesktop.org/%7Eagd5f/linux/commit/?h=drm-next-3.20- wip&id=bdf40b0fa6588ea64ccb069de63d16f9348aeef6
Yes, the same thing need to be done for older asics.