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Date:	Mon, 27 Jan 2014 07:59:25 +0400
From:	Max Filippov <>
Cc:	Chris Zankel <>, Marc Gauthier <>,
	"David S. Miller" <>,
	Grant Likely <>,
	Rob Herring <>,
	Max Filippov <>
Subject: [PATCH 1/3] net: ethoc: don't advertise gigabit speed on attached PHY

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

Signed-off-by: Max Filippov <>
 drivers/net/ethernet/ethoc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/ethoc.c b/drivers/net/ethernet/ethoc.c
index 4de8cfd..0aa1a05 100644
--- a/drivers/net/ethernet/ethoc.c
+++ b/drivers/net/ethernet/ethoc.c
@@ -712,6 +712,8 @@ static int ethoc_open(struct net_device *dev)
+	priv->phy->advertising &= ~(ADVERTISED_1000baseT_Full |
+				    ADVERTISED_1000baseT_Half);

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