linux-kernel - Re: [PATCH v2 6/6] net: phy: DP83640: Add fiber mode enabling/disabling from device tree

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Message-ID: <a9c2144a-f26b-4a71-b808-ce3a94f1264d@lunn.ch>
Date: Tue, 27 Feb 2024 17:18:40 +0100
From: Andrew Lunn <andrew@...n.ch>
To: Bastien Curutchet <bastien.curutchet@...tlin.com>
Cc: "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>, Pavel Machek <pavel@....cz>,
	Lee Jones <lee@...nel.org>,
	Richard Cochran <richardcochran@...il.com>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Russell King <linux@...linux.org.uk>, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org, devicetree@...r.kernel.org,
	linux-leds@...r.kernel.org,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
	herve.codina@...tlin.com, maxime.chevallier@...tlin.com,
	christophercordahi@...ometrics.ca
Subject: Re: [PATCH v2 6/6] net: phy: DP83640: Add fiber mode
 enabling/disabling from device tree

On Tue, Feb 27, 2024 at 10:39:45AM +0100, Bastien Curutchet wrote:
> The PHY is able to use copper or fiber. The fiber mode can be enabled or
> disabled by hardware strap. If hardware strap is incorrect, PHY can't
> establish link.
> 
> Add a DT attribute 'ti,fiber-mode' that can be use to override the
> hardware strap configuration. If the property is not present, hardware
> strap configuration is left as is.

How have you tested this? Do you have a RDK with it connected to an
SFP cage?

    Andrew