Trying to get F37 working on a Rpi-4 with an attached GPS module. The GPS module sends serial data which can be be seen on /dev/ttyS1 as printable NMEA0183 sequences every 5 seconds or so.
However, if this data is present when I boot the system, the boot fails. Seems like uboot somehow is affected by the serial data. While testing, I can disconnect the module until the boot is completed, but this is of course not a working solution in the long run.
So: how to I teach uboot to disregard the serial input? Any hints, out there?