drm/amd/display: Lower DPP DTO only when safe

Browse source

[Why]
A corner case currently exists where DPP DTO is lowered before
pipes are updated to a higher viewport. This causes underflow
as the DPPCLK is too low for the current viewport.

[How]
Only lower DPP DTO when it is safe to lower, or if
the newer clocks are higher than the current ones.

Signed-off-by: Sung Lee <sung.lee@amd.com>
Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Sung Lee 2019-12-04 18:36:07 -05:00 • committed by Alex Deucher

parent 68c0fca5e4

commit 5479034576

3 changed files with 15 additions and 11 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

16

drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.c

View file

2

drivers/gpu/drm/amd/display/dc/clk_mgr/dcn20/dcn20_clk_mgr.h

View file

8

drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c

View file