drm/amd/display: Set max vratio for prefetch to 7.9 for YUV420 MPO

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[Description]
- Single 4K60 playing YUV420 MPO video blocks P-State because
  the required VRatio for prefetch is too high (luma plane for
  YUV420 is 1bpe, so swath height is 16 and prefetch requires
  more lines)
- Allow max vratio per plane to be 7.9 for single display YUV420
  MPO video cases
- Ensure that global vratio prefetch (i.e. total prefetch BW vs.
  total active bandwidth) does not excited 4.0

Reviewed-by: Nevenko Stupar <Nevenko.Stupar@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alvin Lee <Alvin.Lee2@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Alvin Lee 2023-01-25 12:33:43 -05:00 • committed by Alex Deucher

parent e383b12709

commit 7cd07d9de8

8 changed files with 52 additions and 8 deletions

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2

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

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32

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

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

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

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

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

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drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.c

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

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