Re: [PATCH net-next 2/2] net: dsa: mv88e6xxx: embedded PTP timestamp support

From: Luke Howard

Date: Fri Jul 03 2026 - 17:33:59 EST




> On 4 Jul 2026, at 1:13 am, Andrew Lunn <andrew@xxxxxxx> wrote:
>
>> + /* Arrival Time Stamp Mode (ArrTSMode); see the ArrTSMode encoding in
>> + * hwtstamp.h. Zero (the default) leaves arrival time stamps in the
>> + * switch registers; non-zero embeds them in the frame, either appended
>> + * as a trailer or overwritten at that byte offset past the start of the
>> + * PTP common header.
>
> So how do you indicate trailer?

ArrTSMode being 1 (matches switch register interpretation).

Will remove (c).