Hi Simon, On 10.11.20 21:12, Simon Himmelbauer wrote: > config.txt: > > enable_uart=1 > arm_64bit=1 > init_uart_baud=115200 > kernel=u-boot.bin > does it work with the following line? init_uart_clock=3000000 I remembered it being mentioned on the mailing list in the past with regard to serial output issues. Christian