From: Richard Cochran <richardcochran@gmail.com>
To: Kurt Kanzenbach <kurt@linutronix.de>
Cc: Andrew Lunn <andrew@lunn.ch>,
Vivien Didelot <vivien.didelot@gmail.com>,
Florian Fainelli <f.fainelli@gmail.com>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
netdev@vger.kernel.org, Rob Herring <robh+dt@kernel.org>,
devicetree@vger.kernel.org,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Kamil Alkhouri <kamil.alkhouri@hs-offenburg.de>,
ilias.apalodimas@linaro.org, Vladimir Oltean <olteanv@gmail.com>
Subject: Re: [PATCH v1 3/8] net: dsa: hellcreek: Add PTP clock support
Date: Sat, 11 Jul 2020 13:30:13 -0700 [thread overview]
Message-ID: <20200711203013.GA27467@hoboy> (raw)
In-Reply-To: <20200710113611.3398-4-kurt@linutronix.de>
On Fri, Jul 10, 2020 at 01:36:06PM +0200, Kurt Kanzenbach wrote:
> From: Kamil Alkhouri <kamil.alkhouri@hs-offenburg.de>
>
> The switch has internal PTP hardware clocks. Add support for it. There are three
> clocks:
>
> * Synchronized
> * Syntonized
> * Free running
>
> Currently the synchronized clock is exported to user space which is a good
> default for the beginning. The free running clock might be exported later
> e.g. for implementing 802.1AS-2011/2020 Time Aware Bridges (TAB). The switch
> also supports cross time stamping for that purpose.
>
> The implementation adds support setting/getting the time as well as offset and
> frequency adjustments. However, the clock only holds a partial timeofday
> timestamp. This is why we track the seconds completely in software (see overflow
> work and last_ts).
>
> Furthermore, add the PTP multicast addresses into the FDB to forward that
> packages only to the CPU port where they are processed by a PTP program.
>
> Signed-off-by: Kamil Alkhouri <kamil.alkhouri@hs-offenburg.de>
> Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Acked-by: Richard Cochran <richardcochran@gmail.com>
next prev parent reply other threads:[~2020-07-11 20:30 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-10 11:36 [PATCH v1 0/8] Hirschmann Hellcreek DSA driver Kurt Kanzenbach
2020-07-10 11:36 ` [PATCH v1 1/8] net: dsa: Add tag handling for Hirschmann Hellcreek switches Kurt Kanzenbach
2020-07-12 2:57 ` Florian Fainelli
2020-07-10 11:36 ` [PATCH v1 2/8] net: dsa: Add DSA driver " Kurt Kanzenbach
2020-07-11 20:33 ` Florian Fainelli
2020-07-13 6:30 ` Kurt Kanzenbach
2020-07-16 8:29 ` Vladimir Oltean
2020-07-16 9:23 ` Kurt Kanzenbach
2020-07-16 9:39 ` Vladimir Oltean
2020-07-16 10:06 ` Kurt Kanzenbach
2020-07-10 11:36 ` [PATCH v1 3/8] net: dsa: hellcreek: Add PTP clock support Kurt Kanzenbach
2020-07-11 20:30 ` Richard Cochran [this message]
2020-07-11 20:38 ` Florian Fainelli
2020-07-13 6:34 ` Kurt Kanzenbach
2020-07-10 11:36 ` [PATCH v1 4/8] net: dsa: hellcreek: Add support for hardware timestamping Kurt Kanzenbach
2020-07-11 20:38 ` Richard Cochran
2020-07-13 6:35 ` Kurt Kanzenbach
2020-07-13 9:57 ` Vladimir Oltean
2020-07-13 10:57 ` Kurt Kanzenbach
2020-07-13 14:01 ` Richard Cochran
2020-07-13 14:12 ` Vladimir Oltean
2020-07-13 15:38 ` Richard Cochran
2020-07-10 11:36 ` [PATCH v1 5/8] net: dsa: hellcreek: Add TAPRIO offloading support Kurt Kanzenbach
2020-07-10 11:36 ` [PATCH v1 6/8] net: dsa: hellcreek: Add PTP status LEDs Kurt Kanzenbach
2020-07-10 11:36 ` [PATCH v1 7/8] dt-bindings: Add vendor prefix for Hirschmann Kurt Kanzenbach
2020-07-11 20:11 ` Florian Fainelli
2020-07-20 22:49 ` Rob Herring
2020-07-10 11:36 ` [PATCH v1 8/8] dt-bindings: net: dsa: Add documentation for Hellcreek switches Kurt Kanzenbach
2020-07-11 20:18 ` Florian Fainelli
2020-07-13 6:45 ` Kurt Kanzenbach
2020-07-13 14:44 ` Rob Herring
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