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drm/amd/display: set cp25201 to use TPS4 

[Description]
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 later

Signed-off-by: Wenjing Liu <Wenjing.Liu@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Wenjing Liu 2017-09-14 18:50:32 -04:00 committed by Alex Deucher
parent d53d7866a7
commit 25bab0da8f
1 changed files with 14 additions and 2 deletions
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16
drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
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@ -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;