Comment # 8 on bug 77673 from Alex Deucher

(In reply to comment #6)
> Please try the attached patch.
> 
> We now always use the fixed reference divider if both RADEON_PLL_USE_REF_DIV
> and RADEON_PLL_USE_FRAC_FB_DIV are set.
> 
> If only RADEON_PLL_USE_REF_DIV is set then we only use the fixed value as
> minimum limit.

Does that make sense?  Wouldn't we want to use use the fixed value if
RADEON_PLL_USE_REF_DIV regardless of whether RADEON_PLL_USE_FRAC_FB_DIV is set?