linux-kernel - Re: [PATCH net-next v4 2/2] net: phy: dp83tg720: Add randomized polling intervals for link detection

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Message-ID: <425d6237-f7ce-46b5-b77b-72b52e5d92fb@lunn.ch>
Date: Wed, 12 Feb 2025 13:59:59 +0100
From: Andrew Lunn <andrew@...n.ch>
To: Oleksij Rempel <o.rempel@...gutronix.de>
Cc: Heiner Kallweit <hkallweit1@...il.com>,
	Russell King <linux@...linux.org.uk>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	kernel@...gutronix.de, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH net-next v4 2/2] net: phy: dp83tg720: Add randomized
 polling intervals for link detection

On Mon, Feb 10, 2025 at 09:23:58AM +0100, Oleksij Rempel wrote:
61;7803;1c> Address the limitations of the DP83TG720 PHY, which cannot reliably
> detect or report a stable link state. To handle this, the PHY must be
> periodically reset when the link is down. However, synchronized reset
> intervals between the PHY and its link partner can result in a deadlock,
> preventing the link from re-establishing.
> 
> This change introduces a randomized polling interval when the link is
> down to desynchronize resets between link partners.
> 
> Signed-off-by: Oleksij Rempel <o.rempel@...gutronix.de>

Reviewed-by: Andrew Lunn <andrew@...n.ch>

    Andrew