https://bugs.freedesktop.org/show_bug.cgi?id=77673
--- Comment #4 from Alex Deucher agd5f@yahoo.com --- (In reply to comment #3)
Looks like the new pll computation is not respecting the RADEON_PLL_USE_FRAC_FB_DIV flag. Older asics shouldn't use fraction fb dividers.
Nevermind, we always set the RADEON_PLL_USE_FRAC_FB_DIV for LVDS if spread spectrum is enabled. Looks like we aren't respecting RADEON_PLL_USE_REF_DIV properly.