diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c index b735782b8fe0..ced42484dcfc 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c @@ -1700,6 +1700,12 @@ static void dp_test_send_link_training(struct dc_link *link) dp_retrain_link_dp_test(link, &link_settings, false); } +/* TODO hbr2 compliance eye output is unstable + * (toggling on and off) with debugger break + * This caueses intermittent PHY automation failure + * Need to look into the root cause */ +static uint8_t force_tps4_for_cp2520 = 1; + static void dp_test_send_phy_test_pattern(struct dc_link *link) { union phy_test_pattern dpcd_test_pattern; @@ -1758,10 +1764,16 @@ static void dp_test_send_phy_test_pattern(struct dc_link *link) test_pattern = DP_TEST_PATTERN_80BIT_CUSTOM; break; case PHY_TEST_PATTERN_CP2520_1: - test_pattern = DP_TEST_PATTERN_HBR2_COMPLIANCE_EYE; + /* CP2520 pattern is unstable, temporarily use TPS4 instead */ + test_pattern = (force_tps4_for_cp2520 == 1) ? + DP_TEST_PATTERN_TRAINING_PATTERN4 : + DP_TEST_PATTERN_HBR2_COMPLIANCE_EYE; break; case PHY_TEST_PATTERN_CP2520_2: - test_pattern = DP_TEST_PATTERN_CP2520_2; + /* CP2520 pattern is unstable, temporarily use TPS4 instead */ + test_pattern = (force_tps4_for_cp2520 == 1) ? + DP_TEST_PATTERN_TRAINING_PATTERN4 : + DP_TEST_PATTERN_HBR2_COMPLIANCE_EYE; break; case PHY_TEST_PATTERN_CP2520_3: test_pattern = DP_TEST_PATTERN_TRAINING_PATTERN4; |