Planning to add a PCIe(not in USB protocol) device

[Bjørn Mork]

matthew stanger <stangerm2 at gmail.com> writes:

> Is this thread implying the MM doesn't support PCIe in general?

No.  Only that kernel drivers are required.

The situation for USB devices is good because there are only a few
host<->device protocols in use, and those protocols are well known by
now.  We even have a USB-IF class protocol, MBIM, which is used by a
large number of devices thanks to Microsoft making it mandatory for
Windows certification.

The situation for PCI is quite different.  AFAIK, there are no modern
PCIe modems using a documented protocol.  And unfortunately some modem
chipset vendors have found a way around the Microsoft requirement by
letting a Windows specific PCIe driver create a virtual USB MBIM device.


Bjørn