diff options
| author | Joel Stanley <joel@jms.id.au> | 2016-09-22 08:35:02 +0930 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-09-22 03:31:14 -0400 |
| commit | e07dc63ba22df2d8bc931821b22938d4ce37a934 (patch) | |
| tree | 4a4abdc72506f72f3047a1e4d17eb31e06d1ebe5 /drivers/net/ethernet/faraday/ftgmac100.c | |
| parent | 08c9c126004e999f0c05b369d1e0cc757e6040cc (diff) | |
net/faraday: Configure old MDIO interface on Aspeed SoCs
The Aspeed SoCs have a new MDIO interface as an option in the G4 and G5
SoCs. The old one is still available, so select it in order to remain
compatible with the ftgmac100 driver.
Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/faraday/ftgmac100.c')
| -rw-r--r-- | drivers/net/ethernet/faraday/ftgmac100.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/net/ethernet/faraday/ftgmac100.c b/drivers/net/ethernet/faraday/ftgmac100.c index 189373743ddf..e3653b14008a 100644 --- a/drivers/net/ethernet/faraday/ftgmac100.c +++ b/drivers/net/ethernet/faraday/ftgmac100.c @@ -1252,12 +1252,21 @@ static int ftgmac100_setup_mdio(struct net_device *netdev) struct ftgmac100 *priv = netdev_priv(netdev); struct platform_device *pdev = to_platform_device(priv->dev); int i, err = 0; + u32 reg; /* initialize mdio bus */ priv->mii_bus = mdiobus_alloc(); if (!priv->mii_bus) return -EIO; + if (of_machine_is_compatible("aspeed,ast2400") || + of_machine_is_compatible("aspeed,ast2500")) { + /* This driver supports the old MDIO interface */ + reg = ioread32(priv->base + FTGMAC100_OFFSET_REVR); + reg &= ~FTGMAC100_REVR_NEW_MDIO_INTERFACE; + iowrite32(reg, priv->base + FTGMAC100_OFFSET_REVR); + }; + priv->mii_bus->name = "ftgmac100_mdio"; snprintf(priv->mii_bus->id, MII_BUS_ID_SIZE, "%s-%d", pdev->name, pdev->id); |