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net: phy: marvell10g: Use 2500BASEX when using 2.5GBASET

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The Marvell Alaska family of PHYs supports 2.5GBaseT and 5GBaseT modes,
as defined in the 802.3bz specification.

Upon establishing a 2.5GBASET link, the PHY will reconfigure it's MII
interface to 2500BASEX.

At 5G, the PHY will reconfigure it's interface to 5GBASE-R, but this
mode isn't supported by any MAC for now.

This was tested with :
 - The 88X3310, which is on the MacchiatoBin
 - The 88E2010, an Alaska PHY that has no fiber interfaces, and is
   limited to 5G maximum speed.

Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Maxime Chevallier 2019-02-23 00:37:40 +01:00 committed by David S. Miller
parent 0feaccd595
commit e555e5b1b9
1 changed files with 19 additions and 7 deletions
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26
drivers/net/phy/marvell10g.c
View File

@ -235,6 +235,7 @@ static int mv3310_config_init(struct phy_device *phydev)
{
/* Check that the PHY interface type is compatible */
if (phydev->interface != PHY_INTERFACE_MODE_SGMII &&
phydev->interface != PHY_INTERFACE_MODE_2500BASEX &&
phydev->interface != PHY_INTERFACE_MODE_XAUI &&
phydev->interface != PHY_INTERFACE_MODE_RXAUI &&
phydev->interface != PHY_INTERFACE_MODE_10GKR)
@ -313,18 +314,29 @@ static int mv3310_aneg_done(struct phy_device *phydev)
static void mv3310_update_interface(struct phy_device *phydev)
{
if ((phydev->interface == PHY_INTERFACE_MODE_SGMII ||
phydev->interface == PHY_INTERFACE_MODE_2500BASEX ||
phydev->interface == PHY_INTERFACE_MODE_10GKR) && phydev->link) {
/* The PHY automatically switches its serdes interface (and
* active PHYXS instance) between Cisco SGMII and 10GBase-KR
* modes according to the speed. Florian suggests setting
* phydev->interface to communicate this to the MAC. Only do
* this if we are already in either SGMII or 10GBase-KR mode.
* active PHYXS instance) between Cisco SGMII, 10GBase-KR and
* 2500BaseX modes according to the speed. Florian suggests
* setting phydev->interface to communicate this to the MAC.
* Only do this if we are already in one of the above modes.
*/
if (phydev->speed == SPEED_10000)
switch (phydev->speed) {
case SPEED_10000:
phydev->interface = PHY_INTERFACE_MODE_10GKR;
else if (phydev->speed >= SPEED_10 &&
phydev->speed < SPEED_10000)
break;
case SPEED_2500:
phydev->interface = PHY_INTERFACE_MODE_2500BASEX;
break;
case SPEED_1000:
case SPEED_100:
case SPEED_10:
phydev->interface = PHY_INTERFACE_MODE_SGMII;
break;
default:
break;
}
}
}