Subject: Re: [PATCH net-next v4 2/3] net: ethernet: ti: am65-cpsw: Enable RX HW timestamp only for PTP packets

From: Jakub Kicinski <[email-masked]>
Date: Fri, 29 Mar 2024 14:59:04 -0700

On Wed, 27 Mar 2024 11:12:33 +0530 Chintan Vankar wrote:
> To prevent port lock up, disable TSTAMP_EN bit in CPTS_CONTROL
> register. The workaround for timestamping received packets is to
> utilize the CPTS Event FIFO that records timestamps corresponding to
> certain events, with one such event being the reception of an
> Ethernet packet with the EtherType field set to Precision Time
> Protocol (PTP).

You mention EtherType here but the drive retains L4 support,
which is somewhat confusing. Perhaps mention L4 / UDP ports
here, too.