[Bug 77673] [bisected] moving moire starting with "drm/radeon: improve PLL params if we don't match exactly v2"

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=77673

--- Comment #8 from Alex Deucher <agd5f at yahoo.com> ---
(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?

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