On Wed, Mar 11, 2020 at 12:21 PM Chunyan Zhang <zhang.lyra@xxxxxxxxx> wrote: > > diff --git a/arch/arm64/boot/dts/sprd/sp9863a-1h10.dts b/arch/arm64/boot/dts/sprd/sp9863a-1h10.dts > index 2047f7a74265..510f65f4d8b8 100644 > --- a/arch/arm64/boot/dts/sprd/sp9863a-1h10.dts > +++ b/arch/arm64/boot/dts/sprd/sp9863a-1h10.dts > @@ -28,7 +28,7 @@ > > chosen { > stdout-path = "serial1:115200n8"; > - bootargs = "earlycon"; > + bootargs = "earlycon console=ttyS1"; > }; > }; Hi Chunyan, I would expect that you need to either specify the stdout-path, or the console= kernel parameter, but not both. If earlycon was used, shouldn't the driver know which port is the console? Arnd