Re: [PATCH v1 3/8] ARM: dts: aspeed: system1: Add RGMII support

From: Andrew Lunn
Date: Fri Dec 13 2024 - 17:03:43 EST


> +&mac0 {
> + status = "okay";
> +
> + phy-mode = "rgmii-rxid";

Why is everybody getting RGMII wrong this week?

Do you have an extra long clock line on the PCB for the TX clock?

> + phy-handle = <&ethphy0>;
> +
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_rgmii1_default>;
> +};
> +
> &mac2 {
> status = "okay";
> +
> + phy-mode = "rgmii";

Do you have extra long clock lines on the PCB for both Rx and Tx
clock?

I suspect you don't and the RGMII delays are messed up somehow.

Andrew