> From: "Theo de Raadt" <dera...@openbsd.org> > Date: Thu, 13 Feb 2020 11:50:11 -0700 > > Denis <den...@mindall.org> wrote: > > > I installed MC77xx about three years ago into OpenBSD driven machine. It > > actively uses everyday with msm mode driver. The question was how to > > detect UMB and MSM devices and attach suitable driver simultaneously > > (msm + umb) for single device according to USB descriptors for each > > possible mode of MC77xx card. > > > > I haven't track any repository changes since than and use 7304 in MSM > > modes only to have WWAN access and NMEA GPS ports simultaneously, but > > years ago I wanted to use it as UMB device + NMEA. > > > > The USB descriptors for all modes of MC7304 and MC7455 are attached. > > > > Both cards are used actively so I can test any changes if needed. > > The device itself must be configured to export those capabilities. > > For old devices we don't know how to do change that. > > For mid-generation to newer devices, if you force the kernel to not match > umb, then com ports may show up. There's some docs out there which allow > changing the capabilities which are exposed. But umb_attach interferes > and doesn't let you have both.
Well, my EM7345 shows up as: umb0 at uhub0 port 4 configuration 1 interface 0 "Sierra Wireless Inc. Sierra Wireless EM7345 4G LTE" rev 2.00/17.29 addr 2 umodem0 at uhub0 port 4 configuration 1 interface 2 "Sierra Wireless Inc. Sierra Wireless EM7345 4G LTE" rev 2.00/17.29 addr 2 umodem0: data interface 3, has no CM over data, has break umodem0: status change notification available ucom0 at umodem0 In this configuration, ucom0 provides an AT command set interface that provides a (somewhat quirky) NMEA GPS interface.
