From: Olav Morken <[email protected]> For 100mbps operation, the ethernet controller requires a 25 MHz clock in MII mode, and a 50 MHz clock in RMII mode. If the clock is slower, disable 100 Mbps mode.
Signed-off-by: Gunnar Rangoy <[email protected]> Signed-off-by: Paul Driveklepp <[email protected]> Signed-off-by: Olav Morken <[email protected]> --- drivers/net/macb.c | 12 +++++++++++- 1 files changed, 11 insertions(+), 1 deletions(-) diff --git a/drivers/net/macb.c b/drivers/net/macb.c index 08bebf7..d47a052 100644 --- a/drivers/net/macb.c +++ b/drivers/net/macb.c @@ -297,7 +297,17 @@ static void macb_phy_reset(struct macb_device *macb) int i; u16 status, adv; - adv = ADVERTISE_CSMA | ADVERTISE_ALL; + adv = ADVERTISE_CSMA | ADVERTISE_ALL ; + +#ifdef CONFIG_MACB_FORCE10M + printf("%s: 100Mbps is not supported on this board - forcing 10Mbps.\n", + netdev->name); + + adv &= ~ADVERTISE_100FULL; + adv &= ~ADVERTISE_100HALF; + adv &= ~ADVERTISE_100BASE4; +#endif + macb_mdio_write(macb, MII_ADVERTISE, adv); printf("%s: Starting autonegotiation...\n", netdev->name); macb_mdio_write(macb, MII_BMCR, (BMCR_ANENABLE -- 1.6.0.4 _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
