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| author | Richard Retanubun <RichardRetanubun@RuggedCom.com> | 2009-01-23 14:42:58 -0500 |
|---|---|---|
| committer | John Rigby <jrigby@freescale.com> | 2009-02-06 14:54:47 -0700 |
| commit | c4ff77f5e6c3a01610ce97434c0d59acb1476f95 (patch) | |
| tree | 095aaafabcf5d3711f5f9114c855de6121c49d39 /drivers | |
| parent | 92d3e6e0ffcbb7224c83104f8d87b5b4bf39a38f (diff) | |
| download | u-boot-imx-c4ff77f5e6c3a01610ce97434c0d59acb1476f95.zip u-boot-imx-c4ff77f5e6c3a01610ce97434c0d59acb1476f95.tar.gz u-boot-imx-c4ff77f5e6c3a01610ce97434c0d59acb1476f95.tar.bz2 | |
Coldfire: mcfmii: Allow non-autonegotiating PHYs to use mii command
Modified mii_init to support boards with PHYs that are not set to
autonegotiate, but still want to use u-boot's mii commands to probe
the smi bus. Such PHYs will not set the Autonegotiate-done bit.
Signed-off-by: Richard Retanubun <RichardRetanubun@RuggedCom.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/mcfmii.c | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/drivers/net/mcfmii.c b/drivers/net/mcfmii.c index 2b733c6..4f1c0a0 100644 --- a/drivers/net/mcfmii.c +++ b/drivers/net/mcfmii.c @@ -226,7 +226,8 @@ void __mii_init(void) volatile FEC_T *fecp; struct eth_device *dev; int miispd = 0, i = 0; - u16 autoneg = 0; + u16 status = 0; + u16 linkgood = 0; /* retrieve from register structure */ dev = eth_get_dev(); @@ -250,22 +251,32 @@ void __mii_init(void) info->phy_addr = mii_discover_phy(dev); -#define AUTONEGLINK (PHY_BMSR_AUTN_COMP | PHY_BMSR_LS) while (i < MCFFEC_TOUT_LOOP) { - autoneg = 0; - miiphy_read(dev->name, info->phy_addr, PHY_BMSR, &autoneg); + status = 0; i++; - - if ((autoneg & AUTONEGLINK) == AUTONEGLINK) + /* Read PHY control register */ + miiphy_read(dev->name, info->phy_addr, PHY_BMCR, &status); + + /* If phy set to autonegotiate, wait for autonegotiation done, + * if phy is not autonegotiating, just wait for link up. + */ + if ((status & PHY_BMCR_AUTON) == PHY_BMCR_AUTON) { + linkgood = (PHY_BMSR_AUTN_COMP | PHY_BMSR_LS); + } else { + linkgood = PHY_BMSR_LS; + } + /* Read PHY status register */ + miiphy_read(dev->name, info->phy_addr, PHY_BMSR, &status); + if ((status & linkgood) == linkgood) break; udelay(500); } if (i >= MCFFEC_TOUT_LOOP) { - printf("Auto Negotiation not complete\n"); + printf("Link UP timeout\n"); } - /* adapt to the half/full speed settings */ + /* adapt to the duplex and speed settings of the phy */ info->dup_spd = miiphy_duplex(dev->name, info->phy_addr) << 16; info->dup_spd |= miiphy_speed(dev->name, info->phy_addr); } |