drm/amd/display: Correct prefetch calculation

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[Why]
The minimum value of the dst_y_prefetch_equ was not correct
in prefetch calculation whice causes OPTC underflow.

[How]
Add the min operation of dst_y_prefetch_equ in prefetch calculation
for legacy DML.

Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: TungYu Lu <tungyu.lu@amd.com>
Signed-off-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Tested-by: Mark Broadworth <mark.broadworth@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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TungYu Lu 2025-04-11 10:41:48 +08:00 • committed by Alex Deucher

parent 19e743f0fb

commit 33bc89949b

3 changed files with 3 additions and 0 deletions

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drivers/gpu/drm/amd/display/dc/dml/dcn30/display_mode_vba_30.c

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drivers/gpu/drm/amd/display/dc/dml/dcn31/display_mode_vba_31.c

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drivers/gpu/drm/amd/display/dc/dml/dcn314/display_mode_vba_314.c

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