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Coldfire: mcfmii: Allow non-autonegotiating PHYs to use mii command

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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>
This commit is contained in:
Richard Retanubun 2009-01-23 14:42:58 -05:00 • committed by John Rigby
parent 92d3e6e0ff
commit c4ff77f5e6
1 changed files with 18 additions and 7 deletions
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25
drivers/net/mcfmii.c
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@ -226,7 +226,8 @@ void __mii_init(void)
volatile FEC_T *fecp; volatile FEC_T *fecp;
struct eth_device *dev; struct eth_device *dev;
int miispd = 0, i = 0; int miispd = 0, i = 0;
u16 autoneg = 0; u16 status = 0;
u16 linkgood = 0;
/* retrieve from register structure */ /* retrieve from register structure */
dev = eth_get_dev(); dev = eth_get_dev();
@ -250,22 +251,32 @@ void __mii_init(void)
info->phy_addr = mii_discover_phy(dev); info->phy_addr = mii_discover_phy(dev);
#define AUTONEGLINK (PHY_BMSR_AUTN_COMP | PHY_BMSR_LS)
while (i < MCFFEC_TOUT_LOOP) { while (i < MCFFEC_TOUT_LOOP) {
autoneg = 0; status = 0;
miiphy_read(dev->name, info->phy_addr, PHY_BMSR, &autoneg);
i++; i++;
/* Read PHY control register */
miiphy_read(dev->name, info->phy_addr, PHY_BMCR, &status);
if ((autoneg & AUTONEGLINK) == AUTONEGLINK) /* 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; break;
udelay(500); udelay(500);
} }
if (i >= MCFFEC_TOUT_LOOP) { 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_duplex(dev->name, info->phy_addr) << 16;
info->dup_spd |= miiphy_speed(dev->name, info->phy_addr); info->dup_spd |= miiphy_speed(dev->name, info->phy_addr);
} }