netdev - Re: LAN8720: RX errors / packet loss when using smsc PHY driver on i.MX6Q

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Message-ID: <e9c5ef6c-9b4c-4216-b626-c07e20bb0b6f@lunn.ch>
Date: Thu, 13 Nov 2025 23:35:07 +0100
From: Andrew Lunn <andrew@...n.ch>
To: Fabio Estevam <festevam@...il.com>
Cc: Heiner Kallweit <hkallweit1@...il.com>,
	Russell King - ARM Linux <linux@...linux.org.uk>,
	edumazet <edumazet@...gle.com>, netdev <netdev@...r.kernel.org>
Subject: Re: LAN8720: RX errors / packet loss when using smsc PHY driver on
 i.MX6Q

> Behavior:
> 
> - Packet loss occurs when the LAN8720 is bound to the smsc PHY driver.
> 
> - No packet loss when using the generic PHY driver.

> Any guidance on how to further debug this or what additional
> information would be useful is appreciated.

Maybe dump all 32 registers when genphy and smsc driver are being used
and compare them?

	Andrew