From: Steffen Trumtrar <s.trumtrar@xxxxxxxxxxxxxx>
barebox port of the linux patch:
commit a528e5be6b5f8026eda029b03340dcfa23c70824
Author: Rasmus Villemoes <rasmus.villemoes@xxxxxxxxx>
Date: Tue Jun 4 07:34:29 2019 +0000
net: dsa: mv88e6xxx: implement port_set_speed for mv88e6250
The data sheet also mentions the possibility of selecting 200 Mbps for
the MII ports (ports 5 and 6) by setting the ForceSpd field to
0x2 (aka MV88E6065_PORT_MAC_CTL_SPEED_200). However, there's a note
that "actual speed is determined by bit 8 above", and flipping back a
page, one finds that bits 13:8 are reserved...
So without further information on what bit 8 means, let's stick to
supporting just 10 and 100 Mbps on all ports.
Reviewed-by: Andrew Lunn <andrew@xxxxxxx>
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Steffen Trumtrar <s.trumtrar@xxxxxxxxxxxxxx>
---
drivers/net/phy/mv88e6xxx/port.c | 12 ++++++++++++
drivers/net/phy/mv88e6xxx/port.h | 1 +
2 files changed, 13 insertions(+)
diff --git a/drivers/net/phy/mv88e6xxx/port.c b/drivers/net/phy/mv88e6xxx/port.c
index ba2b03e18d..95542d4eec 100644
--- a/drivers/net/phy/mv88e6xxx/port.c
+++ b/drivers/net/phy/mv88e6xxx/port.c
@@ -277,6 +277,18 @@ int mv88e6185_port_set_speed(struct mv88e6xxx_chip *chip, int port, int speed)
return mv88e6xxx_port_set_speed(chip, port, speed, false, false);
}
+/* Support 10, 100 (e.g. 88E6250 family) */
+int mv88e6250_port_set_speed(struct mv88e6xxx_chip *chip, int port, int speed)
+{
+ if (speed == SPEED_MAX)
+ speed = 100;
+
+ if (speed > 100)
+ return -EOPNOTSUPP;
+
+ return mv88e6xxx_port_set_speed(chip, port, speed, false, false);
+}
+
/* Support 10, 100, 200, 1000 Mbps (e.g. 88E6352 family) */
int mv88e6352_port_set_speed(struct mv88e6xxx_chip *chip, int port, int speed)
{
diff --git a/drivers/net/phy/mv88e6xxx/port.h b/drivers/net/phy/mv88e6xxx/port.h
index f47f392b87..f5cf72932a 100644
--- a/drivers/net/phy/mv88e6xxx/port.h
+++ b/drivers/net/phy/mv88e6xxx/port.h
@@ -121,6 +121,7 @@ int mv88e6xxx_port_set_link(struct mv88e6xxx_chip *chip, int port, int link);
int mv88e6xxx_port_set_duplex(struct mv88e6xxx_chip *chip, int port, int dup);
int mv88e6065_port_set_speed(struct mv88e6xxx_chip *chip, int port, int speed);
int mv88e6185_port_set_speed(struct mv88e6xxx_chip *chip, int port, int speed);
+int mv88e6250_port_set_speed(struct mv88e6xxx_chip *chip, int port, int speed);
int mv88e6352_port_set_speed(struct mv88e6xxx_chip *chip, int port, int speed);
int mv88e6390_port_set_speed(struct mv88e6xxx_chip *chip, int port, int speed);
int mv88e6390x_port_set_speed(struct mv88e6xxx_chip *chip, int port, int speed);
--
2.30.2
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