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Date:   Wed, 9 Sep 2020 11:11:41 -0700
From:   Richard Cochran <>
To:     Russell King <>
Cc:     Alexandre Belloni <>,
        Antoine Tenart <>,
        Matteo Croce <>,
        Andre Przywara <>,
        Sven Auhagen <>,
        "David S. Miller" <>,
        Jakub Kicinski <>,
Subject: Re: [PATCH net-next v4 5/6] net: mvpp2: ptp: add support for receive

On Wed, Sep 09, 2020 at 05:25:55PM +0100, Russell King wrote:
> Add support for receive timestamping. When enabled, the hardware adds
> a timestamp into the receive queue descriptor for all received packets
> with no filtering. Hence, we can only support NONE or ALL receive
> filter modes.
> The timestamp in the receive queue contains two bit sof seconds and
> the full nanosecond timestamp. This has to be merged with the remainder
> of the seconds from the TAI clock to arrive at a full timestamp before
> we can convert it to a ktime for the skb hardware timestamp field.
> Signed-off-by: Russell King <>

Acked-by: Richard Cochran <>

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