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Message-ID: <20211104102933.3c6f5b12@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
Date: Thu, 4 Nov 2021 10:29:33 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Martin Kaistra <martin.kaistra@...utronix.de>
Cc: Florian Fainelli <f.fainelli@...il.com>,
Andrew Lunn <andrew@...n.ch>,
Vivien Didelot <vivien.didelot@...il.com>,
Richard Cochran <richardcochran@...il.com>,
Vladimir Oltean <olteanv@...il.com>,
"David S. Miller" <davem@...emloft.net>,
John Stultz <john.stultz@...aro.org>,
Thomas Gleixner <tglx@...utronix.de>,
Stephen Boyd <sboyd@...nel.org>,
Russell King <linux@...linux.org.uk>,
Marc Kleine-Budde <mkl@...gutronix.de>,
linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH 0/7] Add PTP support for BCM53128 switch
On Thu, 4 Nov 2021 14:31:54 +0100 Martin Kaistra wrote:
> this series adds PTP support to the b53 DSA driver for the BCM53128
> switch using the BroadSync HD feature.
>
> As there seems to be only one filter (either by Ethertype or DA) for
> timestamping incoming packets, only L2 is supported.
>
> To be able to use the timecounter infrastructure with a counter that
> wraps around at a non-power of two point, patch 2 adds support for such
> a custom point. Alternatively I could fix up the delta every time a
> wrap-around occurs in the driver itself, but this way it can also be
> useful for other hardware.
Please make sure that the code builds as a module and that each patch
compiles cleanly with W=1 C=1 flags set - build the entire tree first
with W=1 C=1 cause there will be extra warning noise, then apply your
patches one by one and recompile, there should be no warnings since b53
itself builds cleanly.
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