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net: phy: marvell10g: Fix Multi-G advertisement to only advertise 10G 

Some Marvell Alaska PHYs support 2.5G, 5G and 10G BaseT links. Their
default behaviour is to advertise all of these modes, but at the moment,
only 10GBaseT is supported. To prevent link partners from establishing
link at that speed, clear these modes upon configuring aneg parameters.

Fixes: 20b2af32ff ("net: phy: add Marvell Alaska X 88X3310 10Gigabit PHY support")
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reported-by: Russell King <linux@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Maxime Chevallier 2019-02-21 17:54:11 +01:00 committed by David S. Miller
parent ea34a00364
commit 61a65d32fe
1 changed files with 5 additions and 1 deletions
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6
drivers/net/phy/marvell10g.c
View File

@ -26,6 +26,8 @@
#include <linux/marvell_phy.h>
#include <linux/phy.h>
#define MDIO_AN_10GBT_CTRL_ADV_NBT_MASK 0x01e0
enum {
MV_PCS_BASE_T = 0x0000,
MV_PCS_BASE_R = 0x1000,
@ -386,8 +388,10 @@ static int mv3310_config_aneg(struct phy_device *phydev)
else
reg = 0;
/* Make sure we clear unsupported 2.5G/5G advertising */
ret = mv3310_modify(phydev, MDIO_MMD_AN, MDIO_AN_10GBT_CTRL,
MDIO_AN_10GBT_CTRL_ADV10G, reg);
MDIO_AN_10GBT_CTRL_ADV10G |
MDIO_AN_10GBT_CTRL_ADV_NBT_MASK, reg);
if (ret < 0)
return ret;
if (ret > 0)