net: dsa: mv88e6xxx: Fix mv88e6393x EPC write command offset

[ Upstream commit 1323e0c6e1d7e103d59384c3ac50f72b17a6936c ]

According to datasheet, the command opcode must be specified
into bits [14:12] of the Extended Port Control register (EPC).

Fixes: de776d0d316f ("net: dsa: mv88e6xxx: add support for mv88e6393x family")
Signed-off-by: Marco Migliore <m.migliore@tiesse.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/dsa/mv88e6xxx/port.h b/drivers/net/dsa/mv88e6xxx/port.h
index aec9d4fd20e3631cbb9cc6eb3951b8e2d74ff644..d19b6303b91f0aafc6924d6098a93f93fc07213c 100644 (file)
--- a/drivers/net/dsa/mv88e6xxx/port.h
+++ b/drivers/net/dsa/mv88e6xxx/port.h
@@ -276,7 +276,7 @@
 /* Offset 0x10: Extended Port Control Command */
 #define MV88E6393X_PORT_EPC_CMD                0x10
 #define MV88E6393X_PORT_EPC_CMD_BUSY   0x8000
-#define MV88E6393X_PORT_EPC_CMD_WRITE  0x0300
+#define MV88E6393X_PORT_EPC_CMD_WRITE  0x3000
 #define MV88E6393X_PORT_EPC_INDEX_PORT_ETYPE   0x02
 
 /* Offset 0x11: Extended Port Control Data */