diff options
| author | Wenjing Liu <wenjing.liu@amd.com> | 2022-11-22 18:06:28 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-12-15 12:18:19 -0500 |
| commit | 345ce3fc9262881343dc6faa4ec132bc21e88756 (patch) | |
| tree | 5f5108689a911553ca397d6581e3bf426ef6fb05 /drivers/gpu/drm/amd/display/dc/dcn31 | |
| parent | 752e89a70cca1c644ccc9f69c1abd6c2b95ca9d7 (diff) | |
drm/amd/display: add support for three new square pattern variants from DP2.1 specs
[why]
DP2.1 specs has brought 3 new variants of sqaure patterns with different
pre-shoot and de-emphasis equalization requirements. The commit adds
logic to identify these variants and apply corresponding eqaulization
requirements into hardware lane settings.
Reviewed-by: George Shen <George.Shen@amd.com>
Acked-by: Jasdeep Dhillon <jdhillon@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dcn31')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hpo_dp_link_encoder.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hpo_dp_link_encoder.c b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hpo_dp_link_encoder.c index 80dfaa4d4d81..0b317ed31f91 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hpo_dp_link_encoder.c +++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hpo_dp_link_encoder.c @@ -242,7 +242,10 @@ void dcn31_hpo_dp_link_enc_set_link_test_pattern( REG_UPDATE(DP_DPHY_SYM32_CONTROL, MODE, DP2_TEST_PATTERN); break; - case DP_TEST_PATTERN_SQUARE_PULSE: + case DP_TEST_PATTERN_SQUARE: + case DP_TEST_PATTERN_SQUARE_PRESHOOT_DISABLED: + case DP_TEST_PATTERN_SQUARE_DEEMPHASIS_DISABLED: + case DP_TEST_PATTERN_SQUARE_PRESHOOT_DEEMPHASIS_DISABLED: REG_SET(DP_DPHY_SYM32_TP_SQ_PULSE, 0, TP_SQ_PULSE_WIDTH, tp_params->custom_pattern[0]); |