On Fri, Feb 8, 2019 at 1:28 PM Sugaya Taichi <sugaya.taichi@xxxxxxxxxxxxx> wrote: > + > + aliases { > + serial1 = &uart1; > + }; Maybe start with serial0 here? It seems unusual to start counting at 1. > + chosen { > + bootargs = "init=/sbin/finit rootwait earlycon"; The /sbin/finit argument seems user space specific, so you probably don't want this in the dts file but rather pass it from the boot loader. Possible drop the bootargs entirely. Arnd