TB rev 1,2 - serial console on UART3 or ?

[palle]

Hi TB hw forum.

Trying to get a console access to my TB, but no luck so far. The USB/serial cables works fine with my cubietruck2.

https://tinkerboarding.co.uk/wiki/index....dware#UART says that UART3 is the default setup.

No SD card is present yet, so I assume I should get a uboot console trying to boot anyways.

I would love to get access to the console so see how far I can get with NetBSD on this device.

Regards
Palle

---

answering myself...

Got the console working with UART3 as documented *and* a SD card (with Armbian).

But no early boot messages from u-boot before loading Linux.

Anyone?

[palle]

answering myself again

Seems like UART2 show uboot console output when a proper sdcard with e.g. Armbian is present.
U-boot starts to run and continues with Linux kernel output on the UART3 afterwards

[Im4Tinker]

There's a difference from Armbian and Linaro. The former follow a mainline option that the output is defaulted to ttys2 on UART2, whereas the latter has configured to UART3 and I donìt know which is the ttySx.
You could find an answer if you searched before posting.