Hi!

> > root@devuan:/my/ko# ls -al /dev/ttyS0
> > crw-rw---- 1 root dialout 4, 64 Dec 23 11:52 /dev/ttyS0
> > 
> > but not gsm multiplex:
> > 
> > root@devuan:/my/ko# ls -al /dev/gsm*
> > ls: cannot access '/dev/gsm*': No such file or directory
> 
> Hmm with serdev you should not get /dev/ttyS0, so maybe you're missing:
> 
> CONFIG_SERIAL_DEV_BUS=y
> CONFIG_SERIAL_DEV_CTRL_TTYPORT=y
> 
> Probably the Kconfig dependency should be for SERIAL_DEV_CTRL_TTYPORT
> instead of SERIAL_DEV_BUS in these patches if that helps.
> 
> Or else you're missing the serdev related dts changes?

Seems like I was missing the dts changes. I was using kexec (did not
want to replace a working kernel) and that seems to use the old dtb.

gnss0 now seems to work, and I do get some kind of replies from the AT
modem. Thanks!

I'll reply to the original email with bad news and more details...

									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html