2017-09-26 19:48 GMT+02:00 Peter Robinson <pbrobinson@gmail.com>:

There was a change/regression where you need to specify ttyS1 for the
console, not S0, I believe it should work fine for that, I think I
know what the issue is but I'm traveling this week in endless meetings
so I've not had time to verify my theory as to why that is

Another observation.
Burning the Minimal image, inserting it in the RPi3 and booting it with the serial "cable" connected, serial communication works even if I have not "enabled" it in config and extlinux.

Ciao
A.