diff options
Diffstat (limited to 'drivers/net/arm/ixp4xx_eth.c')
| -rw-r--r-- | drivers/net/arm/ixp4xx_eth.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/drivers/net/arm/ixp4xx_eth.c b/drivers/net/arm/ixp4xx_eth.c index 5fe17d5eaa54..448487e22fa3 100644 --- a/drivers/net/arm/ixp4xx_eth.c +++ b/drivers/net/arm/ixp4xx_eth.c @@ -335,11 +335,20 @@ static int ixp4xx_mdio_register(void) if (!(mdio_bus = mdiobus_alloc())) return -ENOMEM; - /* All MII PHY accesses use NPE-B Ethernet registers */ - spin_lock_init(&mdio_lock); - mdio_regs = (struct eth_regs __iomem *)IXP4XX_EthB_BASE_VIRT; - __raw_writel(DEFAULT_CORE_CNTRL, &mdio_regs->core_control); + if (cpu_is_ixp43x()) { + /* IXP43x lacks NPE-B and uses NPE-C for MII PHY access */ + if (!(ixp4xx_read_feature_bits() & IXP4XX_FEATURE_NPEC_ETH)) + return -ENOSYS; + mdio_regs = (struct eth_regs __iomem *)IXP4XX_EthC_BASE_VIRT; + } else { + /* All MII PHY accesses use NPE-B Ethernet registers */ + if (!(ixp4xx_read_feature_bits() & IXP4XX_FEATURE_NPEB_ETH0)) + return -ENOSYS; + mdio_regs = (struct eth_regs __iomem *)IXP4XX_EthB_BASE_VIRT; + } + __raw_writel(DEFAULT_CORE_CNTRL, &mdio_regs->core_control); + spin_lock_init(&mdio_lock); mdio_bus->name = "IXP4xx MII Bus"; mdio_bus->read = &ixp4xx_mdio_read; mdio_bus->write = &ixp4xx_mdio_write; @@ -1250,9 +1259,6 @@ static struct platform_driver ixp4xx_eth_driver = { static int __init eth_init_module(void) { int err; - if (!(ixp4xx_read_feature_bits() & IXP4XX_FEATURE_NPEB_ETH0)) - return -ENOSYS; - if ((err = ixp4xx_mdio_register())) return err; return platform_driver_register(&ixp4xx_eth_driver); |