On Tue, Feb 13, 2024 at 01:43:17PM +0200, Mika Westerberg wrote: > If a DiplayPort cable is directly connected to the host routers USB4 > port, there is no tunnel involved but the port is in "redrive" mode > meaning that it is re-driving the DisplayPort signals from its > DisplayPort source. In this case we need to keep the domain powered on > otherwise once the domain enters D3cold the connected monitor blanks > too. > > Since this happens only on Intel Barlow Ridge add a quirk that takes > runtime PM reference if we detect that the USB4 port entered redrive > mode (and release it once it exits the mode). > > Signed-off-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx> Applied to thunderbolt.git/next.
