drm/amd/display: Enforce minimum prefetch time for low memclk on DCN32

Browse source

[WHY?]
Data return times when using lowest memclk can be <= 60us, which can cause
underflow on high bandwidth displays with a workload.

[HOW?]
Enforce a minimum prefetch time during validation for low memclk modes.

Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Alan Liu <HaoPing.Liu@amd.com>
Signed-off-by: Dillon Varone <Dillon.Varone@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Dillon Varone 2022-10-27 16:22:26 -04:00 • committed by Alex Deucher

parent ea192af507

commit 01c0c124b9

10 changed files with 26 additions and 2 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

1

drivers/gpu/drm/amd/display/dc/dc.h

View file

1

drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.c

View file

1

drivers/gpu/drm/amd/display/dc/dcn321/dcn321_resource.c

View file

2

drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c

View file

4

drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c

View file

3

drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.h

View file

12

drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.c

View file

1

drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.h

View file

2

drivers/gpu/drm/amd/display/dc/dml/dcn321/dcn321_fpu.c

View file

1

drivers/gpu/drm/amd/display/dc/dml/display_mode_structs.h

View file