linux-kernel - Re: [PATCH v2 1/4] arm64: dts: mediatek: mt8390-genio-700-evk: Add Grinn GenioSBC-700

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Message-ID: <350133ab-a116-4555-8d5e-90b718c7b0e1@lunn.ch>
Date: Tue, 19 Aug 2025 18:08:46 +0200
From: Andrew Lunn <andrew@...n.ch>
To: Mateusz Koza <mateusz.koza@...nn-global.com>
Cc: angelogioacchino.delregno@...labora.com, robh@...nel.org,
	krzk+dt@...nel.org, conor+dt@...nel.org, matthias.bgg@...il.com,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org, devicetree@...r.kernel.org,
	marcin.czarnecki@...nn-global.com, b.bilas@...nn-global.com
Subject: Re: [PATCH v2 1/4] arm64: dts: mediatek: mt8390-genio-700-evk: Add
 Grinn GenioSBC-700

> +&eth {
> +	phy-mode = "rgmii-rxid";

Does the PCB have an extra long TX clock line?

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

> +	phy-handle = <&ethernet_phy0>;
> +	snps,reset-active-low;
> +	snps,reset-delays-us = <0 11000 200000>;
> +	mediatek,tx-delay-ps = <2030>;

Please try setting this to 30, and use 'rgmii-id'

	Andrew