drm/amd/display: Use the correct max downscaling value for DCN3.x family

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[why]
As per spec, DCN3.x can do 6:1 downscaling and DCN2.x can do 4:1. The
max downscaling limit value for DCN2.x is 250, which means it's
calculated as 1000 / 4 = 250. For DCN3.x this then gives 1000 / 6 = 167.

[how]
Set maximum downscaling limit to 167 for DCN3.x

Signed-off-by: Nikola Cornij <nikola.cornij@amd.com>
Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Acked-by: Stylon Wang <stylon.wang@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Nikola Cornij 2021-05-06 22:46:52 -04:00 • committed by Alex Deucher

parent bbc49fc032

commit 60d177fdf8

3 changed files with 12 additions and 9 deletions

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

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7

drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c

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7

drivers/gpu/drm/amd/display/dc/dcn301/dcn301_resource.c

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7

drivers/gpu/drm/amd/display/dc/dcn302/dcn302_resource.c

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