Dear Heikki,
Thank you for your reply.
Am 21.11.23 um 14:59 schrieb Heikki Krogerus:
On Tue, Nov 21, 2023 at 12:30:34AM +0100, Paul Menzel wrote:
To test a USB Type-C port for conformance to the specification, is it
possible to connect two Linux devices using a USB Type-C cable, and run some
programs on each?US
(I started using a Dell XPS 13 9360 from 2016, and sometimes experience
troubles with USB Type-C adapters/port replicators and want to verify that
the USB Type-C port works according to the specification.)
Unfortunately USB Type-C is handled in firmware on those computers. We
can only query the status of some basic things using an interface
called UCSI, but most details are completely hidden from the
operating system.
Interesting. Although now not necessary Linux kernel related, there
should be such test frameworks to test such a port “for compliance”. Can
you recommend the one you or Intel are using?
There have been a lot of problems with the UCSI interface on older XPS
13 and Latitude systems. Some of those problems have a workaround in
the driver, but not everything.
Do you know, how Microsoft Windows handles these problems? Also with quirks?
Kind regards,
Paul
