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Date: Tue, 5 Mar 2024 16:35:46 +0100
From: =?UTF-8?B?S8O2cnk=?= Maincent <kory.maincent@bootlin.com>
To: Jakub Kicinski <kuba@kernel.org>
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Subject: Re: [PATCH net-next v9 08/13] ptp: Add phc source and helpers to
 register specific PTP clock or get information
Message-ID: <20240305163546.3b9f3ed9@kmaincent-XPS-13-7390>
In-Reply-To: <20240305065939.2d419ff2@kernel.org>
References: <20240226-feature_ptp_netnext-v9-0-455611549f21@bootlin.com>
	<20240226-feature_ptp_netnext-v9-8-455611549f21@bootlin.com>
	<20240304185734.5f1a476c@kernel.org>
	<ZebZpspMCqjLES/W@shell.armlinux.org.uk>
	<20240305111021.5c892d5a@kmaincent-XPS-13-7390>
	<20240305065939.2d419ff2@kernel.org>
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On Tue, 5 Mar 2024 06:59:39 -0800
Jakub Kicinski <kuba@kernel.org> wrote:

> On Tue, 5 Mar 2024 11:10:21 +0100 K=C3=B6ry Maincent wrote:
> > > No. In the case of mvpp2 + marvell PHY, the two PTP implementations a=
re
> > > entirely separate.   =20
> >=20
> > Yes the PTP clock can be independent from the netdev.
> > We need to know which software layer register the PHC to be able to cal=
l its
> > callbacks.
> >=20
> > My commit log is a bit small here. I will enhance it in the next versio=
n. =20
>=20
> Still, wouldn't it be simpler to store all accessible PTP instances=20
> in the netdev?

You are talking about something like the phy topology but for the ptp?

Then when asking information on a PHC (tsinfo or hwtstamp config) from etht=
ool
we would have to look at the PHC topology of the netdev. This could work. N=
ot
sure it is much simpler, do you see other advantages that it could have?

Regards,
--=20
K=C3=B6ry Maincent, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com