target/linux/ixp4xx/patches-2.6.28/203-npe_driver_phy_reset_autoneg.patch

   1 --- a/drivers/net/arm/ixp4xx_eth.c
   2 +++ b/drivers/net/arm/ixp4xx_eth.c
   3 @@ -322,8 +322,12 @@ static void phy_reset(struct net_device
   4         struct port *port = netdev_priv(dev);
   5         int phy_id = port->mii[idx].phy_id;
   6         int cycles = 0;
   7 +       u16 bmcr;
   8
   9 -       mdio_write(dev, phy_id, MII_BMCR, port->mii_bmcr[idx] | BMCR_RESET);
  10 +       /* reset the PHY */
  11 +       bmcr = mdio_read(dev, phy_id, MII_BMCR);
  12 +       bmcr |= BMCR_ANENABLE;
  13 +       mdio_write(dev, phy_id, MII_BMCR, bmcr | BMCR_RESET);
  14
  15         while (cycles < MAX_MII_RESET_RETRIES) {
  16                 if (!(mdio_read(dev, phy_id, MII_BMCR) & BMCR_RESET)) {
  17 @@ -331,13 +335,23 @@ static void phy_reset(struct net_device
  18                         printk(KERN_DEBUG "%s: phy_reset() took %i cycles\n",
  19                                dev->name, cycles);
  20  #endif
  21 -                       return;
  22 +                       break;
  23                 }
  24                 udelay(1);
  25                 cycles++;
  26         }
  27
  28 -       printk(KERN_ERR "%s: MII reset failed on PHY%2d\n", dev->name, phy_id);
  29 +       if (cycles == MAX_MII_RESET_RETRIES) {
  30 +               printk(KERN_ERR "%s: MII reset failed on PHY%2d\n", dev->name,
  31 +                                                               phy_id);
  32 +               return;
  33 +       }
  34 +
  35 +       /* restart auto negotiation */
  36 +       bmcr = mdio_read(dev, phy_id, MII_BMCR);
  37 +       bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
  38 +       mdio_write(dev, phy_id, MII_BMCR, bmcr);
  39 +
  40  }
  41
  42  static void eth_set_duplex(struct port *port, int full_duplex)