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net: dsa: mv88e6xxx: expose switch time as a PTP hardware clock

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This patch adds basic support for exposing the 32-bit timestamp counter
inside the mv88e6xxx switch as a ptp_clock.

Adjfine implemented by Richard Cochran.
Andrew Lunn: fix return value of PTP stub function.

Signed-off-by: Brandon Streiff <brandon.streiff@ni.com>
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Brandon Streiff 2018-02-14 01:07:45 +01:00 • committed by David S. Miller
commit 2fa8d3af4b
6 changed files with 326 additions and 0 deletions
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