diff options
Diffstat (limited to 'drivers/net/davinci_emac.c')
| -rw-r--r-- | drivers/net/davinci_emac.c | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/drivers/net/davinci_emac.c b/drivers/net/davinci_emac.c index a8905b88f..52617a7fb 100644 --- a/drivers/net/davinci_emac.c +++ b/drivers/net/davinci_emac.c @@ -279,16 +279,42 @@ static int gen_get_link_speed(int phy_addr) static int gen_auto_negotiate(int phy_addr) { u_int16_t tmp; + u_int16_t val; + unsigned long cntr = 0; + + if (!davinci_eth_phy_read(phy_addr, MII_BMCR, &tmp)) + return 0; + + val = tmp | BMCR_FULLDPLX | BMCR_ANENABLE | + BMCR_SPEED100; + davinci_eth_phy_write(phy_addr, MII_BMCR, val); + + if (!davinci_eth_phy_read(phy_addr, MII_ADVERTISE, &val)) + return 0; + + val |= (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | + ADVERTISE_10HALF); + davinci_eth_phy_write(phy_addr, MII_ADVERTISE, val); if (!davinci_eth_phy_read(phy_addr, MII_BMCR, &tmp)) return(0); /* Restart Auto_negotiation */ - tmp |= BMCR_ANENABLE; + tmp |= BMCR_ANRESTART; davinci_eth_phy_write(phy_addr, MII_BMCR, tmp); /*check AutoNegotiate complete */ - udelay (10000); + do { + udelay(40000); + if (!davinci_eth_phy_read(phy_addr, MII_BMSR, &tmp)) + return 0; + + if (tmp & BMSR_ANEGCOMPLETE) + break; + + cntr++; + } while (cntr < 200); + if (!davinci_eth_phy_read(phy_addr, MII_BMSR, &tmp)) return(0); |