From c477d0447db08068a497e7beb892b2b2a7bff64b Mon Sep 17 00:00:00 2001 From: Cyril Chemparathy Date: Mon, 2 Aug 2010 09:44:53 +0000 Subject: [PATCH] phy/marvell: add 88e1121 interface mode support This patch adds support for RGMII RX/TX delay configuration on marvell 88e1121 and derivatives. With this patch, PHY_INTERFACE_MODE_RGMII_*ID modes are now supported on these devices. Signed-off-by: Cyril Chemparathy Signed-off-by: David S. Miller --- drivers/net/phy/marvell.c | 35 ++++++++++++++++++++++++++++++++--- 1 file changed, 32 insertions(+), 3 deletions(-) diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c index 78b74e83ce5d..b1413aed3f98 100644 --- a/drivers/net/phy/marvell.c +++ b/drivers/net/phy/marvell.c @@ -69,6 +69,12 @@ #define MII_M1111_COPPER 0 #define MII_M1111_FIBER 1 +#define MII_88E1121_PHY_MSCR_PAGE 2 +#define MII_88E1121_PHY_MSCR_REG 21 +#define MII_88E1121_PHY_MSCR_RX_DELAY BIT(5) +#define MII_88E1121_PHY_MSCR_TX_DELAY BIT(4) +#define MII_88E1121_PHY_MSCR_DELAY_MASK (~(0x3 << 4)) + #define MII_88E1121_PHY_LED_CTRL 16 #define MII_88E1121_PHY_LED_PAGE 3 #define MII_88E1121_PHY_LED_DEF 0x0030 @@ -180,7 +186,30 @@ static int marvell_config_aneg(struct phy_device *phydev) static int m88e1121_config_aneg(struct phy_device *phydev) { - int err, temp; + int err, oldpage, mscr; + + oldpage = phy_read(phydev, MII_88E1121_PHY_PAGE); + + err = phy_write(phydev, MII_88E1121_PHY_PAGE, + MII_88E1121_PHY_MSCR_PAGE); + if (err < 0) + return err; + mscr = phy_read(phydev, MII_88E1121_PHY_MSCR_REG) & + MII_88E1121_PHY_MSCR_DELAY_MASK; + + if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) + mscr |= (MII_88E1121_PHY_MSCR_RX_DELAY | + MII_88E1121_PHY_MSCR_TX_DELAY); + else if (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) + mscr |= MII_88E1121_PHY_MSCR_RX_DELAY; + else if (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) + mscr |= MII_88E1121_PHY_MSCR_TX_DELAY; + + err = phy_write(phydev, MII_88E1121_PHY_MSCR_REG, mscr); + if (err < 0) + return err; + + phy_write(phydev, MII_88E1121_PHY_PAGE, oldpage); err = phy_write(phydev, MII_BMCR, BMCR_RESET); if (err < 0) @@ -191,11 +220,11 @@ static int m88e1121_config_aneg(struct phy_device *phydev) if (err < 0) return err; - temp = phy_read(phydev, MII_88E1121_PHY_PAGE); + oldpage = phy_read(phydev, MII_88E1121_PHY_PAGE); phy_write(phydev, MII_88E1121_PHY_PAGE, MII_88E1121_PHY_LED_PAGE); phy_write(phydev, MII_88E1121_PHY_LED_CTRL, MII_88E1121_PHY_LED_DEF); - phy_write(phydev, MII_88E1121_PHY_PAGE, temp); + phy_write(phydev, MII_88E1121_PHY_PAGE, oldpage); err = genphy_config_aneg(phydev);