netdev - Re: [PATCH net-next 2/2] net: ethernet: ti: am65-cpsw: Enable RX HW timestamp only for PTP packets

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Message-ID: <3e81297c-2821-4af4-b13d-dc33ae8f85cc@intel.com>
Date: Fri, 16 Feb 2024 14:21:45 -0800
From: Jacob Keller <jacob.e.keller@...el.com>
To: Chintan Vankar <c-vankar@...com>, Dan Carpenter
	<dan.carpenter@...aro.org>, Roger Quadros <rogerq@...nel.org>, "Siddharth
 Vadapalli" <s-vadapalli@...com>, Richard Cochran <richardcochran@...il.com>,
	Paolo Abeni <pabeni@...hat.com>, Jakub Kicinski <kuba@...nel.org>, "Eric
 Dumazet" <edumazet@...gle.com>, "David S. Miller" <davem@...emloft.net>
CC: <linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next 2/2] net: ethernet: ti: am65-cpsw: Enable RX HW
 timestamp only for PTP packets



On 2/15/2024 3:09 AM, Chintan Vankar wrote:
> The CPSW peripherals on J7AHP, J7VCL, J7AEP, J7ES, AM64 SoCs have
> an errata i2401 "CPSW: Host Timestamps Cause CPSW Port to Lock up".
> 

What's different about timestamping only PTP packets that prevents this
port lock up?