[Bug 105128] [CI] igt@* - dmesg-warn - *ERROR* dp aux hw did not signal timeout!
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Fri Oct 25 23:08:24 UTC 2019
https://bugs.freedesktop.org/show_bug.cgi?id=105128
--- Comment #18 from Matt Roper <matthew.d.roper at intel.com> ---
After more investigation, it appears that the frequent TGL failures happen
after the platform enters DC6. Since the AUX B and AUX C power domains are in
PG1 on TGL rather than PG3 as they were on ICL, I believe we need to add these
to the "DC off" list so that the DMC firmware won't turn them off behind our
back when entering DC states.
I've sent a series with a change that I hope will make these failures go away
(plus some other AUX fixes and cleanups) here:
https://patchwork.freedesktop.org/series/68590/
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