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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [CI] igt@* - dmesg-warn - *ERROR* dp aux hw did not signal timeout!"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105128#c18">Comment # 18</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [CI] igt@* - dmesg-warn - *ERROR* dp aux hw did not signal timeout!"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105128">bug 105128</a>
from <span class="vcard"><a class="email" href="mailto:matthew.d.roper@intel.com" title="Matt Roper <matthew.d.roper@intel.com>"> <span class="fn">Matt Roper</span></a>
</span></b>
<pre>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:
<a href="https://patchwork.freedesktop.org/series/68590/">https://patchwork.freedesktop.org/series/68590/</a></pre>
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