diff options
| author | Antoine Tenart <antoine.tenart@bootlin.com> | 2020-05-26 17:01:49 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-05-27 14:54:31 -0700 |
| commit | b2e118f638fb8984e430624a8cf27483cc23cf8d (patch) | |
| tree | c29d54d4a700c00513e171f604ab3ac5cff6e0d2 /drivers/net/ethernet/mscc/ocelot.c | |
| parent | 7ff4f3f315db361e35c1d61a6fdbfddbe345b633 (diff) | |
net: mscc: allow offloading timestamping operations to the PHY
This patch adds support for offloading timestamping operations not only
to the Ocelot switch (as already supported) but to compatible PHYs.
When both the PHY and the Ocelot switch support timestamping operations,
the PHY implementation is chosen as the timestamp will happen closer to
the medium.
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mscc/ocelot.c')
| -rw-r--r-- | drivers/net/ethernet/mscc/ocelot.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c index 2151c08a57c7..9cfe1fd98c30 100644 --- a/drivers/net/ethernet/mscc/ocelot.c +++ b/drivers/net/ethernet/mscc/ocelot.c @@ -1204,7 +1204,10 @@ static int ocelot_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) struct ocelot *ocelot = priv->port.ocelot; int port = priv->chip_port; - if (ocelot->ptp) { + /* If the attached PHY device isn't capable of timestamping operations, + * use our own (when possible). + */ + if (!phy_has_hwtstamp(dev->phydev) && ocelot->ptp) { switch (cmd) { case SIOCSHWTSTAMP: return ocelot_hwstamp_set(ocelot, port, ifr); |