tg3: 5785: Set port mode to MII when link down

This patch sets the port mode to MII when the link is down for the 5785.
Setting the port mode to MII instead of GMII saves power.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 003ab53cf6139746b0acaa2181fdca0c61171273..d726da8c5930e9244288e8238aac36fe52bdff80 100644 (file)
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -1363,8 +1363,11 @@ static void tg3_adjust_link(struct net_device *dev)
 
                if (phydev->speed == SPEED_100 || phydev->speed == SPEED_10)
                        mac_mode |= MAC_MODE_PORT_MODE_MII;
-               else
+               else if (phydev->speed == SPEED_1000 ||
+                        GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5785)
                        mac_mode |= MAC_MODE_PORT_MODE_GMII;
+               else
+                       mac_mode |= MAC_MODE_PORT_MODE_MII;
 
                if (phydev->duplex == DUPLEX_HALF)
                        mac_mode |= MAC_MODE_HALF_DUPLEX;