diff options
| author | George Shen <george.shen@amd.com> | 2023-06-14 17:53:16 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-07-18 11:15:05 -0400 |
| commit | b97089b88c7f8359a772cc2a31e0a87d9441243a (patch) | |
| tree | 0f7bf58941847e76364edb59fdc71b8ff1084091 /drivers/gpu/drm/amd/display/include | |
| parent | fff7b95a5046be01df5883b3297139cf21bc8763 (diff) | |
drm/amd/display: Update 128b/132b downspread factor to 0.3%
[Why]
Updating downspread factor to 0.3% to add additional margin to account
for potential link rate deviations (up to 300ppm as per the DP spec).
Reviewed-by: Wenjing Liu <wenjing.liu@amd.com>
Acked-by: Alan Liu <haoping.liu@amd.com>
Signed-off-by: George Shen <george.shen@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/include')
| -rw-r--r-- | drivers/gpu/drm/amd/display/include/link_service_types.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/include/link_service_types.h b/drivers/gpu/drm/amd/display/include/link_service_types.h index cd870af5fd25..1b8ab20f1715 100644 --- a/drivers/gpu/drm/amd/display/include/link_service_types.h +++ b/drivers/gpu/drm/amd/display/include/link_service_types.h @@ -53,7 +53,7 @@ enum { BITS_PER_DP_BYTE = 10, DATA_EFFICIENCY_8b_10b_x10000 = 8000, /* 80% data efficiency */ DATA_EFFICIENCY_8b_10b_FEC_EFFICIENCY_x100 = 97, /* 97% data efficiency when FEC is enabled */ - DATA_EFFICIENCY_128b_132b_x10000 = 9646, /* 96.71% data efficiency x 99.75% downspread factor */ + DATA_EFFICIENCY_128b_132b_x10000 = 9641, /* 96.71% data efficiency x 99.7% downspread factor */ }; enum lttpr_mode { |