diff options
| author | Kurt Kanzenbach <kurt@linutronix.de> | 2023-01-13 16:12:58 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-01-16 14:36:57 +0100 |
| commit | 9627c981ac82209c66c1b6c0e15c6cceb8656f01 (patch) | |
| tree | a8c19a1a94aedde27d0e4b1cdadbaebba811d87a /drivers/net/dsa/mv88e6xxx/ptp.h | |
| parent | virtio/vsock: replace virtio_vsock_pkt with sk_buff (diff) | |
| download | linux-9627c981ac82209c66c1b6c0e15c6cceb8656f01.tar.xz linux-9627c981ac82209c66c1b6c0e15c6cceb8656f01.zip | |
net: dsa: mv88e6xxx: Enable PTP receive for mv88e6390
The switch receives management traffic such as STP and LLDP. However, PTP
messages are not received, only transmitted.
Ideally, the switch would trap all PTP messages to the management CPU. This
particular switch has a PTP block which identifies PTP messages and traps them
to a dedicated port. There is a register to program this destination. This is
not used at the moment.
Therefore, program it to the same port as the MGMT traffic is trapped to. This
allows to receive PTP messages as soon as timestamping is enabled.
In addition, the datasheet mentions that this register is not valid e.g., for
6190 variants. So, add a new PTP operation which is added for the 6390 and 6290
devices.
Tested simply like this on Marvell 88E6390, revision 1:
|/ # ptp4l -2 -i lan4 --tx_timestamp_timeout=40 -m
|[...]
|ptp4l[147.450]: master offset 56 s2 freq +1262 path delay 413
|ptp4l[148.450]: master offset 22 s2 freq +1244 path delay 434
|ptp4l[149.450]: master offset 5 s2 freq +1234 path delay 446
|ptp4l[150.451]: master offset 3 s2 freq +1233 path delay 451
|ptp4l[151.451]: master offset 1 s2 freq +1232 path delay 451
|ptp4l[152.451]: master offset -3 s2 freq +1229 path delay 451
|ptp4l[153.451]: master offset 9 s2 freq +1240 path delay 451
Link: https://lore.kernel.org/r/CAFSKS=PJBpvtRJxrR4sG1hyxpnUnQpiHg4SrUNzAhkWnyt9ivg@mail.gmail.com
Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/dsa/mv88e6xxx/ptp.h')
| -rw-r--r-- | drivers/net/dsa/mv88e6xxx/ptp.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/dsa/mv88e6xxx/ptp.h b/drivers/net/dsa/mv88e6xxx/ptp.h index 269d5d16a466..6c4d09adc93c 100644 --- a/drivers/net/dsa/mv88e6xxx/ptp.h +++ b/drivers/net/dsa/mv88e6xxx/ptp.h @@ -151,6 +151,7 @@ void mv88e6xxx_ptp_free(struct mv88e6xxx_chip *chip); extern const struct mv88e6xxx_ptp_ops mv88e6165_ptp_ops; extern const struct mv88e6xxx_ptp_ops mv88e6250_ptp_ops; extern const struct mv88e6xxx_ptp_ops mv88e6352_ptp_ops; +extern const struct mv88e6xxx_ptp_ops mv88e6390_ptp_ops; #else /* !CONFIG_NET_DSA_MV88E6XXX_PTP */ @@ -171,6 +172,7 @@ static inline void mv88e6xxx_ptp_free(struct mv88e6xxx_chip *chip) static const struct mv88e6xxx_ptp_ops mv88e6165_ptp_ops = {}; static const struct mv88e6xxx_ptp_ops mv88e6250_ptp_ops = {}; static const struct mv88e6xxx_ptp_ops mv88e6352_ptp_ops = {}; +static const struct mv88e6xxx_ptp_ops mv88e6390_ptp_ops = {}; #endif /* CONFIG_NET_DSA_MV88E6XXX_PTP */ |