[PATCH v2 2/4] net: ethoc: don't advertise gigabit speed on attached PHY

Max Filippov
2014-01-29T06:00:54Z

OpenCores 10/100 Mbps MAC does not support speeds above 100 Mbps, but does
not disable advertisement when PHY supports them. This results in
non-functioning network when the MAC is connected to a gigabit PHY connected
to a gigabit switch.

The fix is to disable gigabit speed advertisement on attached PHY
unconditionally.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
---
Changes v1->v2:
- disable both gigabit advertisement and support.

drivers/net/ethernet/ethoc.c | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/drivers/net/ethernet/ethoc.c b/drivers/net/ethernet/ethoc.c
index 4de8cfd..5643b2d 100644
--- a/drivers/net/ethernet/ethoc.c
+++ b/drivers/net/ethernet/ethoc.c
@@ -688,6 +688,14 @@ static int ethoc_mdio_probe(struct net_device *dev)
}

priv->phy = phy;
+ phy_update_advert(phy,
+ ADVERTISED_1000baseT_Full |
+ ADVERTISED_1000baseT_Half, 0);
+ phy_start_aneg(phy);
+ phy_update_supported(phy,
+ SUPPORTED_1000baseT_Full |
+ SUPPORTED_1000baseT_Half, 0);
+
return 0;
}

--
1.8.1.4