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Date:   Thu, 15 Aug 2019 14:45:22 +0200
From:   Andrew Lunn <andrew@lunn.ch>
To:     "Y.b. Lu" <yangbo.lu@nxp.com>
Cc:     "Allan W . Nielsen" <allan.nielsen@microchip.com>,
        "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
        "David S . Miller" <davem@davemloft.net>,
        Alexandre Belloni <alexandre.belloni@bootlin.com>,
        Microchip Linux Driver Support <UNGLinuxDriver@microchip.com>
Subject: Re: [v2, 4/4] ocelot: add VCAP IS2 rule to trap PTP Ethernet frames
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> [Y.b. Lu] Actually I couldn’t find reasons why make some ports PTP
> unaware, if there is software stack for PTP aware...

Maybe because i have not yet done

apt-get install linuxptp
$EDITOR /etc/defaults/ptp4l
systemctl restart ptp4l

Just because it exists does not mean it is installed.

     Andrew