[Bug 108529] [CI][BAT] igt@* - dmesg-warn - [drm:drm_dp_dpcd_access] Too many retries, giving up. First error: -5, then *ERROR* Failed to probe lspcon

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108529

--- Comment #8 from Swati Sharma <swati2.sharma at intel.com> ---
In the boot log of
https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_5021/fi-apl-guc/boot0.log, it
can be seen
<7>[    6.938880] [drm:lspcon_wake_native_aux_ch [i915]] Native AUX CH up, DPCD
version: 0.0

DPCD version is read incorrectly, after that lspcon probe error comes. 

Failure of following i-g-t subtests has this thing common:
kms_pipe_crc_basic at suspend-read-crc-pipe-a
igt at drv_module_reload@basic-reload
igt at drv_module_reload@basic-reload-inject
igt at pm_rpm@module-reload

The same thing is happening for APL and KBL.

KBL NUC on which I am trying to reproduce this issue, DPCD version is read
correctly and probe failure is not observed.

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