On Tue, Apr 26, 2022 at 02:25:35PM +0300, Mika Westerberg wrote: > Hi all, > > So far connecting two Thunderbolt/USB4 domains (hosts) the high-speed link > has been using a single lane. The reason for this was simplicity and also > the fact that the host DMA was not able to go over the 20 Gbit/s even if > the lanes were bonded. However, Intel Alder Lake and beyond actually can go > higher than that so now it makes more sense to take advantage of the lane > bonding. The USB4 Inter-Domain Service specification describes the > protocol and this patch series implements it for the Linux Thunderbolt/USB4 > driver. > > If both sides (hosts) of the link announce supporting this, we will > establish bonded link. This is only possible on systems with software based > connection manager (so Intel Alder Lake and beyond). > > Mika Westerberg (5): > thunderbolt: Add debug logging when lane is enabled/disabled > thunderbolt: Move tb_port_state() prototype to correct place > thunderbolt: Split setting link width and lane bonding into own functions > thunderbolt: Ignore port locked error in tb_port_wait_for_link_width() > thunderbolt: Add support for XDomain lane bonding Series applied to thunderbolt.git/next.
