Yes it does, worked with my android phone for charging and I was able to backup my laptop to and external drive using the port.
If you are interested here is the output of journalctl -f when plugging in the usb c to displayport cable
Nov 11 00:31:02 sf-latitude kernel: usb 3-2: new full-speed USB device number 23 using xhci_hcd
Nov 11 00:31:02 sf-latitude kernel: usb 3-2: New USB device found, idVendor=06c4, idProduct=c100, bcdDevice= 0.04
Nov 11 00:31:02 sf-latitude kernel: usb 3-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
Nov 11 00:31:02 sf-latitude kernel: usb 3-2: Product: DisplayPort ALT mode device
Nov 11 00:31:02 sf-latitude kernel: usb 3-2: Manufacturer: BizLink Technology Inc.