drm/amd/display: Fix rounding errors in CalculatePrefetchSchedule

[why]

Rounding errors were causing mode validation to fail in some cases when
it should not. (IE. Increasing fclk from a lower value could lead to
validation failure, which should not happen.)

Reviewed-by: Dillon Varone <dillon.varone@amd.com>
Signed-off-by: Matthew Stewart <Matthew.Stewart2@amd.com>
Signed-off-by: Fangzhi Zuo <jerry.zuo@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Matthew Stewart 2026-06-19 13:41:36 -04:00 • committed by Alex Deucher
commit fa0300333d