linux-kernel - Re: [PATCH] arm64: dts: ti: k3-*: Replace rgmii-rxid with rgmii-id for CPSW ports

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Message-ID: <20260112075636.GA105765@francesco-nb>
Date: Mon, 12 Jan 2026 08:56:36 +0100
From: Francesco Dolcini <francesco@...cini.it>
To: Francesco Dolcini <francesco@...cini.it>
Cc: Siddharth Vadapalli <s-vadapalli@...com>, trini@...sulko.com,
	u-boot@...ts.denx.de, nm@...com, vigneshr@...com, kristo@...nel.org,
	robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, srk@...com
Subject: Re: [PATCH] arm64: dts: ti: k3-*: Replace rgmii-rxid with rgmii-id
 for CPSW ports

On Mon, Jan 12, 2026 at 08:49:56AM +0100, Francesco Dolcini wrote:
> +Tom +U-Boot ML
> 
> Hello Siddharth,
> 
> On Sat, Oct 25, 2025 at 01:07:59PM +0530, Siddharth Vadapalli wrote:
> > The MAC Ports across all of the CPSW instances (CPSW2G, CPSW3G, CPSW5G and
> > CPSW9G) present in various K3 SoCs only support the 'RGMII-ID' mode. This
> > correction has been implemented/enforced by the updates to:
> > a) Device-Tree binding for CPSW [0]
> > b) Driver for CPSW [1]
> > c) Driver for CPSW MAC Port's GMII [2]
> > 
> > To complete the transition from 'RGMII-RXID' to 'RGMII-ID', update the
> > 'phy-mode' property for all CPSW ports by replacing 'rgmii-rxid' with
> > 'rgmii-id'.
> > 
> > [0]: commit 9b357ea52523 ("dt-bindings: net: ti: k3-am654-cpsw-nuss: update phy-mode in example")
> > [1]: commit ca13b249f291 ("net: ethernet: ti: am65-cpsw: fixup PHY mode for fixed RGMII TX delay")
> > [2]: commit a22d3b0d49d4 ("phy: ti: gmii-sel: Always write the RGMII ID setting")
> 
> What about U-Boot?
> I just noticed this in today U-Boot master:
> 
>   RGMII mode without internal TX delay unsupported; please fix your Device Tree
> 
> and I think this is coming from the DTS update from Linux to U-Boot.
> 
> Can you look into that?

Ok, I think that the issue is that the U-Boot code was updated
correctly, but now we need the v6.19 DT in U-Boot, and as of now we have
6.18 DT.

Tom: are you planning to sync the U-Boot DT to Linux v6.19 before the next
U-Boot release?


Francesco