qmicli / Sierra EM7455

[Bjørn Mork]

Sebastian Sjoholm <sebastian.sjoholm at gmail.com> writes:

> Hi,
>
> When using the latest version from git master, it will work.
>
> root at x046:~# qmicli -d /dev/cdc-wdm0 --dms-get-model
> [/dev/cdc-wdm0] Device model retrieved:
>         Model: 'EM7455'

Great!

Now I am more curious than your average cat as usual, so I just have to
ask a few questions :)

This looks like an interesting platform:

> Linux x046 4.5.0-rc7-NONAME-00337-g7f02bf6 #1 SMP Wed Mar 9 14:41:03 CET 2016 armv7l GNU/Linux

Are you able to share any details?  This is an embedded gizmo with an
m.2 slot?  A tablet of some kind?  Or a Chromebook?  Did it come with the EM7455
originally, or did you add that?

> [    1.406957] usb 2-1: new high-speed USB device number 2 using ci_hdrc

This was more than a bit surprising to me, if this really is a platform
designed with an EM7455 in mind.  I expected to see super-speed here.
Why isn't there an xhci controller wired up to the m.2 slot?

(this isn't a problem - it will work fine with USB2 only. I use an
MC7455 like that.  Just curious)

And finally: I have been guessing two different EM74xx device IDs
lately, based on documentation only since you are the first user I've
seen with one of these modules.  Could you please tell me the device ID
of your EM7455?


Bjørn