*ERROR* Failed to probe lspcon

https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_1525/fi-cfl-8109u/igt@kms_flip@flip-vs-panning-interruptible@a-dp1.html#dmesg-warnings851

<7> [41.580464] i915 0000:00:02.0: [drm:drm_dp_dual_mode_detect [drm_display_helper]] DP dual mode HDMI ID:  (err -121)
<7> [41.580492] i915 0000:00:02.0: [drm:lspcon_init [i915]] No LSPCON detected, found unknown
<3> [41.580730] i915 0000:00:02.0: [drm] *ERROR* Failed to probe lspcon
<3> [41.580762] i915 0000:00:02.0: [drm] *ERROR* LSPCON init failed on port B
<7> [41.582114] i915 0000:00:02.0: [drm:drm_dp_read_dpcd_caps [drm_display_helper]] AUX B/DDI B/PHY B: DPCD: 12 14 c4 01 01 15 01 81 00 00 04 00 0f 00 04
<7> [41.583153] i915 0000:00:02.0: [drm:intel_dp_start_link_train [i915]] [CONNECTOR:95:DP-1][ENCODER:94:DDI B/PHY B][DPRX] Using LINK_BW_SET value 06
<7> [41.584094] i915 0000:00:02.0: [drm:intel_dp_set_signal_levels [i915]] [CONNECTOR:95:DP-1][ENCODER:94:DDI B/PHY B][DPRX] 8b/10b, lanes: 1, vswing levels: 0/0/0/0, pre-emphasis levels: 0/0/0/0
<7> [41.584279] i915 0000:00:02.0: [drm:hsw_set_signal_levels [i915]] Using signal levels 00000000
<7> [41.584461] i915 0000:00:02.0: [drm:intel_dp_program_link_training_pattern [i915]] [CONNECTOR:95:DP-1][ENCODER:94:DDI B/PHY B][DPRX] Using DP training pattern TPS1
<7> [41.633650] i915 0000:00:02.0: [drm:drm_dp_dpcd_access [drm_display_helper]] AUX B/DDI B/PHY B: Too many retries, giving up. First error: -5
<3> [41.633829] i915 0000:00:02.0: [drm] *ERROR* [CONNECTOR:95:DP-1][ENCODER:94:DDI B/PHY B][DPRX] Failed to enable link training
<7> [41.633845] i915 0000:00:02.0: [drm:intel_dp_link_train_phy [i915]] [CONNECTOR:95:DP-1][ENCODER:94:DDI B/PHY B][DPRX] Link Training failed at link rate = 162000, lane count = 1
<3> [41.634859] i915 0000:00:02.0: [drm] *ERROR* Link Training Unsuccessful
<7> [41.635653] i915 0000:00:02.0: [drm:intel_enable_transcoder [i915]] enabling pipe A
<7> [41.636430] i915 0000:00:02.0: [drm:intel_fbc_update [i915]] reserved 4915200 bytes of contiguous stolen space for FBC, limit: 1
<7> [41.636901] i915 0000:00:02.0: [drm:intel_fbc_update [i915]] Enabling FBC on [PLANE:31:plane 1A]
<7> [41.653591] i915 0000:00:02.0: [drm:verify_connector_state [i915]] [CONNECTOR:95:DP-1]
<7> [41.654378] i915 0000:00:02.0: [drm:intel_modeset_verify_crtc [i915]] [CRTC:51:pipe A]
<7> [41.709098] i915 0000:00:02.0: [drm:drm_dp_dpcd_access [drm_display_helper]] AUX B/DDI B/PHY B: Too many retries, giving up. First error: -5
<3> [41.709138] i915 0000:00:02.0: [drm] *ERROR* DPCD read failed, address 0x5df
<7> [41.720866] [drm:drm_mode_setcrtc] [CRTC:51:pipe A]
<7> [41.720959] [drm:drm_mode_setcrtc] [CONNECTOR:95:DP-1]
<7> [41.722721] [drm:drm_mode_setcrtc] [CRTC:51:pipe A]
<7> [41.722768] [drm:drm_mode_setcrtc] [CONNECTOR:95:DP-1]