On Monday 13 July 2015 18:39:15 Ray Jui wrote: > + chosen { > + bootargs = "console=ttyS0,115200n8 earlycon=uart8250,mmio32,0x66130000"; > + }; > + Please remove those bootargs and just set the stdout-path to the alias of the uart. If necessary, you can have just "earlycon" in the bootargs. Arnd