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net: Improve 88E151x PHY initialization

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- The EEE fixup magic should also be enabled for RGMII
- Improved comments

Signed-off-by: Clemens Gruber <clemens.gruber@pqgruber.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Cc: Hao Zhang <hzhang@ti.com>
Cc: Michal Simek <michal.simek@xilinx.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
This commit is contained in:
Clemens Gruber 2015-06-06 14:44:57 +02:00 committed by Joe Hershberger
parent ade4ea4d71
commit 90a94ef652
1 changed files with 23 additions and 14 deletions
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37
drivers/net/phy/marvell.c
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@ -303,24 +303,33 @@ static int m88e1518_config(struct phy_device *phydev)
* As per Marvell Release Notes - Alaska 88E1510/88E1518/88E1512
* /88E1514 Rev A0, Errata Section 3.1
*/
/* EEE initialization */
phy_write(phydev, MDIO_DEVAD_NONE, 22, 0x00ff);
phy_write(phydev, MDIO_DEVAD_NONE, 17, 0x214B);
phy_write(phydev, MDIO_DEVAD_NONE, 16, 0x2144);
phy_write(phydev, MDIO_DEVAD_NONE, 17, 0x0C28);
phy_write(phydev, MDIO_DEVAD_NONE, 16, 0x2146);
phy_write(phydev, MDIO_DEVAD_NONE, 17, 0xB233);
phy_write(phydev, MDIO_DEVAD_NONE, 16, 0x214D);
phy_write(phydev, MDIO_DEVAD_NONE, 17, 0xCC0C);
phy_write(phydev, MDIO_DEVAD_NONE, 16, 0x2159);
phy_write(phydev, MDIO_DEVAD_NONE, 22, 0x0000);
/* SGMII-to-Copper mode initialization */
if (phydev->interface == PHY_INTERFACE_MODE_SGMII) {
phy_write(phydev, MDIO_DEVAD_NONE, 22, 0x00ff); /* page 0xff */
phy_write(phydev, MDIO_DEVAD_NONE, 17, 0x214B);
phy_write(phydev, MDIO_DEVAD_NONE, 16, 0x2144);
phy_write(phydev, MDIO_DEVAD_NONE, 17, 0x0C28);
phy_write(phydev, MDIO_DEVAD_NONE, 16, 0x2146);
phy_write(phydev, MDIO_DEVAD_NONE, 17, 0xB233);
phy_write(phydev, MDIO_DEVAD_NONE, 16, 0x214D);
phy_write(phydev, MDIO_DEVAD_NONE, 17, 0xCC0C);
phy_write(phydev, MDIO_DEVAD_NONE, 16, 0x2159);
phy_write(phydev, MDIO_DEVAD_NONE, 22, 0x0000); /* reg page 0 */
phy_write(phydev, MDIO_DEVAD_NONE, 22, 18); /* reg page 18 */
/* Write HWCFG_MODE = SGMII to Copper */
/* Select page 18 */
phy_write(phydev, MDIO_DEVAD_NONE, 22, 18);
/* In reg 20, write MODE[2:0] = 0x1 (SGMII to Copper) */
m88e1518_phy_writebits(phydev, 20, 0, 3, 1);
/* Phy reset */
/* PHY reset is necessary after changing MODE[2:0] */
m88e1518_phy_writebits(phydev, 20, 15, 1, 1);
phy_write(phydev, MDIO_DEVAD_NONE, 22, 0); /* reg page 18 */
/* Reset page selection */
phy_write(phydev, MDIO_DEVAD_NONE, 22, 0);
udelay(100);
}