umsm(4) patch is needed to recognize MC7304 by umsm(4) and to have both NMEA and AT ports enabled.
Especially, I'm using MC7304's (MC7455 on another platform) NMEA port for NTP time corrections from GLO/GPS. AT port is needed for mode changes by AT commands. Very useful. umb(4) is a good one for modern fast data transmit over MBIM port. So the advantages of simultaneous running umsm(4) and umb(4) drivers for single physical device are: - having NMEA + AT serial discipline working by umsm(4); (any rather 'old' serial discipline functionality can be used like SMS, modem's mode changes by AT commands etc.) - MBIM for fast LTE Cat-3 / Cat-6 data connections by modern umb(4) driver. Denis On 8/15/2018 4:43 AM, Bryan Vyhmeister wrote: > On Tue, Aug 14, 2018 at 05:53:43PM +0300, Denis wrote: >> Most of modern modems have serial discipline ports and USB Mobile >> Broadband Interface Model (MBIM) interface in some port compositions >> simultaneously. It seems very useful to have different disciplines >> supported by umsm(4) and umb(4) drivers on the same device. >> > <snip> >> >> Does it possible to have simultaneously operated AT + NMEA ports by >> umsm(4)driver and MBIM interface by umb(4) driver on the same MC7304 >> device in 6.3? > > What is the advantage in having a device attach to both umsm(4) and > umb(4)? What are you trying to accomplish? The EM7455 worked perfectly > with umb(4) until your previous umsm(4) diff and now it only attaches as > umsm(4). Are you wanting to send SMS messages or something like that > with your devices? > > Bryan >
