On Fri, Sep 19, 2025 at 07:06:12PM -0500, bryan@bryanhinton.com wrote:
> Use the new uart0 label for the console and make the speed explicit by
> adding current-speed = <115200>. This keeps the DTS OS-agnostic: no
> bootargs or distribution-specific properties are added.
>
> Verification: Boot-tested with mainline Image+DTB via U-Boot on OpenWrt
> One (MT7981B). Serial console active at 115200 baud, and DTB decompile
> confirms serial0 alias and stdout-path set correctly.
>
> Signed-off-by: Bryan Hinton <bryan@bryanhinton.com>
Reviewed-by: Daniel Golle <daniel@makrotopia.org>
See comment below
> ---
> .../arm64/boot/dts/mediatek/mt7981b-openwrt-one.dts | 13 +++++++++++++
> 1 file changed, 13 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/mediatek/mt7981b-openwrt-one.dts b/arch/arm64/boot/dts/mediatek/mt7981b-openwrt-one.dts
> index 4f6cbb491287..1d2c3a21019c 100644
> --- a/arch/arm64/boot/dts/mediatek/mt7981b-openwrt-one.dts
> +++ b/arch/arm64/boot/dts/mediatek/mt7981b-openwrt-one.dts
> @@ -8,8 +8,21 @@ / {
> compatible = "openwrt,one", "mediatek,mt7981b";
> model = "OpenWrt One";
>
> + aliases {
> + serial0 = &uart0;
> + };
> +
> + chosen {
> + stdout-path = "serial0:115200n8";
> + };
> +
> memory@40000000 {
> reg = <0 0x40000000 0 0x40000000>;
> device_type = "memory";
> };
> };
> +
> +&uart0 {
> + status = "okay";
> + current-speed = <115200>; /* 0x1c200 */
The comment with the hex value should be removed. There is no need for it.
> +};
> --
> 2.51.0
>
>