Re: [RESEND PATCH] arm64: dts: specify console via command line

[Arnd Bergmann]

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