linux-kernel - Re: [PATCH v4 13/16] dt-bindings: net: Add DT bindings for DWMAC on NXP S32G/R SoCs

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Message-ID: <a938f3cd-9c9c-43a6-8f06-760eec69e1d1@lunn.ch>
Date: Thu, 31 Oct 2024 16:00:20 +0100
From: Andrew Lunn <andrew@...n.ch>
To: Jan Petrous <jan.petrous@....nxp.com>
Cc: Krzysztof Kozlowski <krzk@...nel.org>,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	Alexandre Torgue <alexandre.torgue@...s.st.com>,
	Jose Abreu <joabreu@...opsys.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Vinod Koul <vkoul@...nel.org>,
	Richard Cochran <richardcochran@...il.com>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Russell King <linux@...linux.org.uk>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	Emil Renner Berthing <kernel@...il.dk>,
	Minda Chen <minda.chen@...rfivetech.com>,
	Nicolas Ferre <nicolas.ferre@...rochip.com>,
	Claudiu Beznea <claudiu.beznea@...on.dev>,
	Iyappan Subramanian <iyappan@...amperecomputing.com>,
	Keyur Chudgar <keyur@...amperecomputing.com>,
	Quan Nguyen <quan@...amperecomputing.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Giuseppe Cavallaro <peppe.cavallaro@...com>,
	linux-stm32@...md-mailman.stormreply.com,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org, linux-arm-msm@...r.kernel.org,
	imx@...ts.linux.dev, devicetree@...r.kernel.org,
	NXP S32 Linux Team <s32@....com>
Subject: Re: [PATCH v4 13/16] dt-bindings: net: Add DT bindings for DWMAC on
 NXP S32G/R SoCs

> They are compatible on current stage of driver implementation, the
> RGMII interface has no any difference. But later there shall be
> added SGMII and this provides some level of difference, at least
> from max-speed POV.
> 
> The S32R allows higher speed (2G5) on SGMII, but S32G2/S32G3 has
> 1G as maximum.

Please be careful with your naming. SGMII is defined by CISCO to only
support 10/100/1000Mbps. If you support more than 1G, it is not SGMII,
it is likely to be 2500BaseX, etc.

	Andrew