netdev - Re: [PATCH 4/4] arm64: dts: agilex5: initial support for Arrow AXE5-Eagle

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Message-ID: <87iksj7kh6.fsf@pengutronix.de>
Date: Tue, 19 Nov 2024 08:26:13 +0100
From: Steffen Trumtrar <s.trumtrar@...gutronix.de>
To: Andrew Lunn <andrew@...n.ch>
Cc: Dinh Nguyen <dinguyen@...nel.org>,  Rob Herring <robh@...nel.org>,
  Krzysztof Kozlowski <krzk+dt@...nel.org>,  Conor Dooley
 <conor+dt@...nel.org>,  Richard Cochran <richardcochran@...il.com>,
  Michael Turquette <mturquette@...libre.com>,  Stephen Boyd
 <sboyd@...nel.org>,  devicetree@...r.kernel.org,
  linux-kernel@...r.kernel.org,  netdev@...r.kernel.org,
  linux-clk@...r.kernel.org,  kernel@...gutronix.de
Subject: Re: [PATCH 4/4] arm64: dts: agilex5: initial support for Arrow
 AXE5-Eagle

On 2024-10-30 at 14:41 +01, Andrew Lunn <andrew@...n.ch> wrote:

> > +&gmac2 {
> > +	status = "okay";
> > +	phy-mode = "rgmii-id";
> > +	phy-handle = <&emac2_phy0>;
> > +
> > +	max-frame-size = <9000>;
> > +
> > +	mdio0 {
> > +		#address-cells = <1>;
> > +		#size-cells = <0>;
> > +		compatible = "snps,dwmac-mdio";
> > +		emac2_phy0: ethernet-phy@1 {
> > +			reg = <0x1>;
> > +			adi,rx-internal-delay-ps = <2000>;
> > +			adi,tx-internal-delay-ps = <2000>;
>
> You have rgmii-id and 2000ps delay? Are these two lines actually
> required?

The binding states that these lines are for rgmii-id (and rgmii-rxid) mode, so why not?
Or am I misunderstanding and you mean setting the default values here is unnecessary?


Best regards,
Steffen

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