From: Russell King <rmk+kernel@armlinux.org.uk>
Date: Wed, 13 Dec 2017 09:22:03 +0000 (+0000)
Subject: net: phy: marvell: avoid configuring fiber page for SGMII-to-Copper
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=de9c4e06bbe872d725f306e34f3eea21155488e2;p=openwrt%2Fstaging%2Fblogic.git

net: phy: marvell: avoid configuring fiber page for SGMII-to-Copper

When in SGMII-to-Copper mode, the fiber page is used for the MAC facing
link, and does not require configuration of the fiber auto-negotiation
settings.  Avoid trying.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c
index 4d02b27df044..b5a8f750e433 100644
--- a/drivers/net/phy/marvell.c
+++ b/drivers/net/phy/marvell.c
@@ -637,6 +637,10 @@ static int m88e1510_config_aneg(struct phy_device *phydev)
 	if (err < 0)
 		goto error;
 
+	/* Do not touch the fiber page if we're in copper->sgmii mode */
+	if (phydev->interface == PHY_INTERFACE_MODE_SGMII)
+		return 0;
+
 	/* Then the fiber link */
 	err = marvell_set_page(phydev, MII_MARVELL_FIBER_PAGE);
 	if (err < 0)