On Mon, May 27, 2024 at 10:42:32AM GMT, Neil Armstrong wrote: > Register a typec mux in order to change the PHY mode on the Type-C > mux events depending on the mode and the svid when in Altmode setup. > > The DisplayPort phy should be left enabled if is still powered on > by the DRM DisplayPort controller, so bail out until the DisplayPort > PHY is not powered off. > > The Type-C Mode/SVID only changes on plug/unplug, and USB SAFE states > will be set in between of USB-Only, Combo and DisplayPort Only so > this will leave enough time to the DRM DisplayPort controller to > turn of the DisplayPort PHY. > > The patchset also includes bindings changes and DT changes. > > This has been successfully tested on an SM8550 board, but the > Thinkpad X13s deserved testing between non-PD USB, non-PD DisplayPort, > PD USB Hubs and PD Altmode Dongles to make sure the switch works > as expected. > > The DisplayPort 4 lanes setup can be check with: > $ cat /sys/kernel/debug/dri/ae01000.display-controller/DP-1/dp_debug > name = msm_dp > drm_dp_link > rate = 540000 > num_lanes = 4 Has the issue with the USB controller dying on us been resolved? Regards, Bjorn
