linux-kernel - Re: [PATCH] ARM: dts: aspeed: Add device tree for Nvidia's GB200 UT3.0b platform BMC

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Message-ID: <dbcdeb49-7118-4517-b965-af580164722b@lunn.ch>
Date: Tue, 3 Jun 2025 23:45:19 +0200
From: Andrew Lunn <andrew@...n.ch>
To: Donald Shannon <donalds@...dia.com>
Cc: robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org,
	joel@....id.au, andrew@...econstruct.com.au,
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-aspeed@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ARM: dts: aspeed: Add device tree for Nvidia's GB200
 UT3.0b platform BMC

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

Does the PCB have an extra long transmit clock line?

https://elixir.bootlin.com/linux/v6.15/source/Documentation/devicetree/bindings/net/ethernet-controller.yaml#L287

You probably want 'rgmii-id' here.

> +	max-speed = <1000>;

RGMII has a maximum speed of 1G, so this is pointless.

	Andrew