target/linux/ixp4xx/patches-2.6.24/203-npe_driver_phy_reset_autoneg.patch

   1 Index: linux-2.6.24.2/drivers/net/arm/ixp4xx_eth.c
   2 ===================================================================
   3 --- linux-2.6.24.2.orig/drivers/net/arm/ixp4xx_eth.c
   4 +++ linux-2.6.24.2/drivers/net/arm/ixp4xx_eth.c
   5 @@ -322,8 +322,12 @@ static void phy_reset(struct net_device
   6         struct port *port = netdev_priv(dev);
   7         int phy_id = port->mii[idx].phy_id;
   8         int cycles = 0;
   9 +       u16 bmcr;
  10
  11 -       mdio_write(dev, phy_id, MII_BMCR, port->mii_bmcr[idx] | BMCR_RESET);
  12 +       /* reset the PHY */
  13 +       bmcr = mdio_read(dev, phy_id, MII_BMCR);
  14 +       bmcr |= BMCR_ANENABLE;
  15 +       mdio_write(dev, phy_id, MII_BMCR, bmcr | BMCR_RESET);
  16
  17         while (cycles < MAX_MII_RESET_RETRIES) {
  18                 if (!(mdio_read(dev, phy_id, MII_BMCR) & BMCR_RESET)) {
  19 @@ -331,13 +335,23 @@ static void phy_reset(struct net_device
  20                         printk(KERN_DEBUG "%s: phy_reset() took %i cycles\n",
  21                                dev->name, cycles);
  22  #endif
  23 -                       return;
  24 +                       break;
  25                 }
  26                 udelay(1);
  27                 cycles++;
  28         }
  29
  30 -       printk(KERN_ERR "%s: MII reset failed on PHY%2d\n", dev->name, phy_id);
  31 +       if (cycles == MAX_MII_RESET_RETRIES) {
  32 +               printk(KERN_ERR "%s: MII reset failed on PHY%2d\n", dev->name,
  33 +                                                               phy_id);
  34 +               return;
  35 +       }
  36 +
  37 +       /* restart auto negotiation */
  38 +       bmcr = mdio_read(dev, phy_id, MII_BMCR);
  39 +       bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
  40 +       mdio_write(dev, phy_id, MII_BMCR, bmcr);
  41 +
  42  }
  43
  44  static void eth_set_duplex(struct port *port, int full_duplex)