drm/amd/display: Avoid programming DTO if Refclk is 0

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[Why]
Reference clock, either DPREFCLK or DTBCLK can be a value of 0
which then will encounter division by 0.

[How]
Avoid further calculation and programming if refclk is not
populated.

Reviewed-by: Dillon Varone <dillon.varone@amd.com>
Acked-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Signed-off-by: Chris Park <chris.park@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

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Chris Park 2024-05-28 15:56:22 -04:00 • committed by Alex Deucher

parent f2034ebb27

commit d3d996ec89

1 changed files with 4 additions and 0 deletions

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drivers/gpu/drm/amd/display/dc/dccg/dcn401/dcn401_dccg.c

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