Subject: Re: [PATCH net-next v9 08/13] ptp: Add phc source and helpers to register specific PTP clock or get information

From: "Russell King (Oracle)" <[email-masked]>
Date: Tue, 5 Mar 2024 08:36:54 +0000

On Mon, Mar 04, 2024 at 06:57:34PM -0800, Jakub Kicinski wrote:
> On Mon, 26 Feb 2024 14:39:59 +0100 Kory Maincent wrote:
> > Prepare for future hardware timestamp selection by adding source and
> > corresponding pointers to ptp_clock structure. Additionally, introduce
> > helpers for registering specific phydev or netdev PTP clocks, retrieving
> > PTP clock information such as hwtstamp source or phydev/netdev pointers,
> > and obtaining the ptp_clock structure from the phc index.
> 
> Can we assume there's one PHC per netdev?
> We both store the netdev/phydev info in the ptp clock
> and ptp clock in the netdev. Is there a reason for that?

No. In the case of mvpp2 + marvell PHY, the two PTP implementations are
entirely separate.

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