drm/amd/display: revert removing otg toggle w/a back when no active display

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w/a use case:
- dual display, compliance, toggling between the displays
- switching between 120Hz 420 -> 144Hz 444 and vice versa
- switching between 144Hz -> 60Hz TMDS or vice versa

It'd typically involve TMDS in some capacity since that's the only link
signal we leave the OTG running but DIO/PHY off you can hit this in
cases where you have multiple displays as well it syncs with the first
active OTG, so if you had OTG[0] mapped and FIFO off you'd hit it even
if OTG[1] was mapped and had FIFO

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Acked-by: Rodrigo Siqueira <rodrigo.siqueira@amd.com>
Signed-off-by: Charlene Liu <charlene.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Charlene Liu 2023-12-01 06:25:11 -07:00 • committed by Alex Deucher

parent d218291579

commit c59397eff9

2 changed files with 7 additions and 9 deletions

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10

drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c

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6

drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_smu.c

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