On Fri, 10 Apr 2020, Masaki Ota wrote: > Hi, Cao-san, > > Do you know AUI1657 device? This device looks U1. I think recent all U1 > devices work as PTP. Linux also supports PTP, so I think we should add > something ID to Linux source code. (I remember a something flag is > already exist.) That's actually partially covered by Artem's 1/1 patch you have not been CCed on -- please see it here: http://lore.kernel.org/r/20200405235517.18203-1-dedsa2002@xxxxxxxxx If this could be made more generic to cover a group of devices all-in-one, that'd be even better of course. Thanks, -- Jiri Kosina SUSE Labs