re-tgl-u3: KMS tests - dmesg-warn/dmesg-fail - *ERROR* failed to get link status|*ERROR* failed to enable link training
https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_8575/re-tgl-u3/igt@kms_psr@primary_render.html#dmesg-warnings965
<7> [624.543286] i915 0000:00:02.0: [drm:intel_dp_set_signal_levels [i915]] Using vswing level 0
<7> [624.543353] i915 0000:00:02.0: [drm:intel_dp_set_signal_levels [i915]] Using pre-emphasis level 0
<7> [624.551257] i915 0000:00:02.0: [drm:intel_dp_set_signal_levels [i915]] Using vswing level 0
<7> [624.551322] i915 0000:00:02.0: [drm:intel_dp_set_signal_levels [i915]] Using pre-emphasis level 0
<7> [624.561419] i915 0000:00:02.0: [drm:intel_dp_start_link_train [i915]] clock recovery OK
<7> [624.561485] i915 0000:00:02.0: [drm:intel_dp_program_link_training_pattern [i915]] Using DP training pattern TPS3
<7> [624.596830] i915 0000:00:02.0: [drm:gen8_de_irq_handler [i915]] hotplug event received, stat 0x00020000, dig 0x000088a8, pins 0x00000100, long 0x00000100
<7> [624.596906] i915 0000:00:02.0: [drm:intel_hpd_irq_handler [i915]] digital hpd on [ENCODER:300:DDI E] - long
<7> [624.596980] i915 0000:00:02.0: [drm:intel_hpd_irq_handler [i915]] Received HPD interrupt on PIN 8 - cnt: 10
<7> [624.597101] i915 0000:00:02.0: [drm:intel_dp_hpd_pulse [i915]] got hpd irq on [ENCODER:300:DDI E] - long
<7> [624.597228] i915 0000:00:02.0: [drm:i915_hotplug_work_func [i915]] running encoder hotplug functions
<7> [624.597322] i915 0000:00:02.0: [drm:i915_hotplug_work_func [i915]] Connector DP-2 (pin 8) received hotplug event. (retry 0)
<7> [624.628953] [drm:drm_dp_dpcd_access] Too many retries, giving up. First error: -5
<3> [624.628961] i915 0000:00:02.0: [drm] *ERROR* failed to get link status
<7> [624.629237] i915 0000:00:02.0: [drm:intel_dp_start_link_train [i915]] [CONNECTOR:301:DP-2] Link Training failed at link rate = 540000, lane count = 4
<7> [624.629400] [drm:intel_dp_modeset_retry_work_fn [i915]] [CONNECTOR:301:DP-2]
<7> [624.664535] [drm:drm_dp_dpcd_access] Too many retries, giving up. First error: -5
<7> [624.664686] i915 0000:00:02.0: [drm:intel_enable_pipe [i915]] enabling pipe B
<7> [624.664864] i915 0000:00:02.0: [drm:intel_enable_ddi [i915]] Panel doesn't support DRRS
<7> [624.664939] i915 0000:00:02.0: [drm:intel_audio_codec_enable [i915]] ELD on [CONNECTOR:301:DP-2], [ENCODER:300:DDI E]
<7> [624.665051] i915 0000:00:02.0: [drm:hsw_audio_codec_enable [i915]] Enable audio codec on transcoder B, 32 bytes ELD
<7> [624.665166] i915 0000:00:02.0: [drm:hsw_audio_config_update [i915]] using automatic Maud, Naud
<7> [624.669995] i915 0000:00:02.0: [drm:intel_fbc_enable [i915]] reserved 33177600 bytes of contiguous stolen space for FBC, threshold: 1
<7> [624.670064] i915 0000:00:02.0: [drm:intel_fbc_enable [i915]] Enabling FBC on pipe A
<7> [624.681558] i915 0000:00:02.0: [drm:gen9_dbuf_slices_update [i915]] Updating dbuf slices to 0x3
<7> [624.682024] i915 0000:00:02.0: [drm:verify_connector_state [i915]] [CONNECTOR:276:eDP-1]
<7> [624.682158] i915 0000:00:02.0: [drm:intel_atomic_commit_tail [i915]] [CRTC:91:pipe A]
<7> [624.682387] i915 0000:00:02.0: [drm:intel_ddi_get_config [i915]] [ENCODER:275:DDI A] Fec status: 0
<7> [624.682497] i915 0000:00:02.0: [drm:verify_single_dpll_state.isra.146 [i915]] DPLL 0
<7> [624.682838] i915 0000:00:02.0: [drm:verify_connector_state [i915]] [CONNECTOR:301:DP-2]
<7> [624.682985] i915 0000:00:02.0: [drm:intel_atomic_commit_tail [i915]] [CRTC:152:pipe B]
<7> [624.683227] i915 0000:00:02.0: [drm:intel_ddi_get_config [i915]] [ENCODER:300:DDI E] Fec status: 0
<7> [624.683330] i915 0000:00:02.0: [drm:verify_single_dpll_state.isra.146 [i915]] TC PLL 2
<7> [624.684162] i915 0000:00:02.0: [drm:intel_dp_detect [i915]] [CONNECTOR:301:DP-2]
<7> [624.684367] i915 0000:00:02.0: [drm:intel_encoder_hotplug [i915]] [CONNECTOR:301:DP-2] status updated from connected to disconnected
<7> [624.684501] i915 0000:00:02.0: [drm:drm_fb_helper_hotplug_event.part.17]
Edited by LAKSHMINARAYANA VUDUM