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net: dsa: mv88e6xxx: Set PTP Ethertype

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For the 6352 and newer switches, the PTP Ethertype defaults to
ETH_P_1588. Hence it was not explicitly set. The 6165 however defaults
to 0. So explicitly set the EtherType.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andrew Lunn 2018-07-18 22:38:26 +02:00 committed by David S. Miller
parent e2294a8bf5
commit 2dbed245b4
2 changed files with 8 additions and 0 deletions
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5
drivers/net/dsa/mv88e6xxx/hwtstamp.c
View file

@ -606,6 +606,11 @@ int mv88e6xxx_hwtstamp_setup(struct mv88e6xxx_chip *chip)
return err;
}
/* Set the ethertype of L2 PTP messages */
err = mv88e6xxx_ptp_write(chip, MV88E6XXX_PTP_GC_ETYPE, ETH_P_1588);
if (err)
return err;
/* MV88E6XXX_PTP_MSG_TYPE is a mask of PTP message types to
* timestamp. This affects all ports that have timestamping enabled,
* but the timestamp config is per-port; thus we configure all events

3
drivers/net/dsa/mv88e6xxx/ptp.h
View file

@ -82,6 +82,9 @@
#define MV88E6XXX_PTP_GC_ETYPE 0x00
/* 6165 Global Control Registers */
/* Offset 0x00: Ether Type */
#define MV88E6XXX_PTP_GC_ETYPE 0x00
/* Offset 0x01: Message ID */
#define MV88E6XXX_PTP_GC_MESSAGE_ID 0x01