linux-kernel - Re: [PATCH net-next 1/4] dt-bindings: net: dsa: microchip: add SGMII port support to KSZ9477 switch

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Message-ID: <445f69fa-5d1f-40a8-b180-4924edb6acea@lunn.ch>
Date: Fri, 16 Aug 2024 00:50:38 +0200
From: Andrew Lunn <andrew@...n.ch>
To: Tristram.Ha@...rochip.com
Cc: Woojung.Huh@...rochip.com, UNGLinuxDriver@...rochip.com,
	devicetree@...r.kernel.org, f.fainelli@...il.com, olteanv@...il.com,
	robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org,
	davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
	pabeni@...hat.com, marex@...x.de, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 1/4] dt-bindings: net: dsa: microchip: add SGMII
 port support to KSZ9477 switch

> My KSZ9477 board does not have that I2C connection, so I cannot
> implement the change as suggested.

I would say any board without the I2C bus connected is fatally
broken. Most SFPs are buggy, and don't follow the standard. You need
to read the vendor and product ID so you can enable various quirks to
make them work correctly.

> I am getting a new design board that needs verification of this
> connection.  After I make it work I will re-submit the patch.

O.K, that sounds good.

	Andrew