net: dsa: bcm_sf2: Only 7278 supports 2Gb/sec IMP port

[ Upstream commit de34d7084edd069dac5aa010cfe32bd8c4619fa6 ]

The 7445 switch clocking profiles do not allow us to run the IMP port at
2Gb/sec in a way that it is reliable and consistent. Make sure that the
setting is only applied to the 7278 family.

Fixes: 8f1880cbe8d0 ("net: dsa: bcm_sf2: Configure IMP port for 2Gb/sec")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/dsa/bcm_sf2.c b/drivers/net/dsa/bcm_sf2.c
index c936090..f181a28 100644 (file)
--- a/drivers/net/dsa/bcm_sf2.c
+++ b/drivers/net/dsa/bcm_sf2.c
@@ -72,7 +72,9 @@ static void bcm_sf2_imp_setup(struct dsa_switch *ds, int port)
 
                /* Force link status for IMP port */
                reg = core_readl(priv, offset);
-               reg |= (MII_SW_OR | LINK_STS | GMII_SPEED_UP_2G);
+               reg |= (MII_SW_OR | LINK_STS);
+               if (priv->type == BCM7278_DEVICE_ID)
+                       reg |= GMII_SPEED_UP_2G;
                core_writel(priv, reg, offset);
 
                /* Enable Broadcast, Multicast, Unicast forwarding to IMP port */