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net/phy: enable serdes auto-negotiation for vsc8514 phy

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VSC8514 QSGMII PHY requires enabling auto-negotiation,
otherwise it wouldn't work.

Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
This commit is contained in:
Shengzhou Liu 2014-11-24 17:11:59 +08:00 committed by York Sun
parent 355b385847
commit c18fc2c960
1 changed files with 11 additions and 2 deletions
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13
drivers/net/phy/vitesse.c
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@ -1,8 +1,8 @@
/*
* Vitesse PHY drivers
*
* Copyright 2010-2012 Freescale Semiconductor, Inc.
* Author: Andy Fleming
* Copyright 2010-2014 Freescale Semiconductor, Inc.
* Original Author: Andy Fleming
* Add vsc8662 phy support - Priyanka Jain
* SPDX-License-Identifier: GPL-2.0+
*/
@ -50,6 +50,7 @@
#define MIIM_VSC8574_18G_CMDSTAT 0x8000
/* Vitesse VSC8514 control register */
#define MIIM_VSC8514_MAC_SERDES_CON 0x10
#define MIIM_VSC8514_GENERAL18 0x12
#define MIIM_VSC8514_GENERAL19 0x13
#define MIIM_VSC8514_GENERAL23 0x17
@ -246,6 +247,14 @@ static int vsc8514_config(struct phy_device *phydev)
val = (val & 0xf8ff);
phy_write(phydev, MDIO_DEVAD_NONE, MIIM_VSC8514_GENERAL23, val);
/* Enable Serdes Auto-negotiation */
phy_write(phydev, MDIO_DEVAD_NONE, PHY_EXT_PAGE_ACCESS,
PHY_EXT_PAGE_ACCESS_EXTENDED3);
val = phy_read(phydev, MDIO_DEVAD_NONE, MIIM_VSC8514_MAC_SERDES_CON);
val = val | MIIM_VSC8574_MAC_SERDES_ANEG;
phy_write(phydev, MDIO_DEVAD_NONE, MIIM_VSC8514_MAC_SERDES_CON, val);
phy_write(phydev, MDIO_DEVAD_NONE, PHY_EXT_PAGE_ACCESS, 0);
genphy_config_aneg(phydev);
return 0;