linux-kernel - Re: [PATCH net-next 1/3] dt-bindings: net: dsa: lantiq,gswip: reference common PHY properties

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Message-ID: <ad3bbac2-1aea-401a-881f-a8a9860f84a9@lunn.ch>
Date: Tue, 27 Jan 2026 16:21:26 +0100
From: Andrew Lunn <andrew@...n.ch>
To: Daniel Golle <daniel@...rotopia.org>
Cc: Vladimir Oltean <olteanv@...il.com>, Hauke Mehrtens <hauke@...ke-m.de>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, netdev@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 1/3] dt-bindings: net: dsa: lantiq,gswip:
 reference common PHY properties

> > Is the PCS integrated into the port?
> 
> The PCS is hard-tied to port 4 of the switch. Neither can that port be
> used for anything else than this PCS, nor can the PCS be used elsewhere.
> It's a bit like they nuked one of the TP PHY ports and glued in that
> SGMII PCS instead. The PCS is probably a ready-made IP block

Does it have IDs in register 2 and 3? Is there any clue if it is
licensed from somebody?

	 Andrew