On Mon, 16 Oct 2023 18:23:07 +0200 Köry Maincent wrote: > > What's the reason for timestamp precision differences? > > My understanding so far was the the differences come from: > > 1. different stamping device (i.e. separate "piece of silicon", > > accessed over a different bus, with different PHC etc.) > > 2. different stamping point (MAC vs DMA) > > > > I don't think any "integrated" device would support stamps which > > differ under category 1. > > It was a case reported by Maxime on v3: > https://lore.kernel.org/netdev/20230324112541.0b3dd38a@xxxxxxxxx/ IMHO this talks about how clock control/disciplining works which is a somewhat independent topic of timestamping.
