https://bugzilla.kernel.org/show_bug.cgi?id=206393
--- Comment #11 from Bjoern Franke (bjo@nord-west.org) --- (In reply to Alex Deucher from comment #10)
(In reply to Bjoern Franke from comment #9)
Issue seems to be fixed in 5.6.0-rc3, so it will be hopefully backported into the 5.5 branch.
Can you identify what patch fixed it for you?
Bisected to 5622b2d68d0a6e2fd960f2129704dc3c561608b2. Does this make sense to you?