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| author | Peter Tyser <ptyser@xes-inc.com> | 2009-02-04 15:14:05 -0600 |
|---|---|---|
| committer | Ben Warren <biggerbadderben@gmail.com> | 2009-08-21 10:35:30 -0700 |
| commit | b1e849f2201bbbf3ca81fde164f154f9caf7f0e9 (patch) | |
| tree | 12133d4f01af09b347e49ac35311edbb925ec6cf /drivers/net/tsec.c | |
| parent | 477fa6378fbd3e47a5e2e83d0dd3970d5b1c8371 (diff) | |
| download | u-boot-imx-b1e849f2201bbbf3ca81fde164f154f9caf7f0e9.zip u-boot-imx-b1e849f2201bbbf3ca81fde164f154f9caf7f0e9.tar.gz u-boot-imx-b1e849f2201bbbf3ca81fde164f154f9caf7f0e9.tar.bz2 | |
tsec: Wait for auto-negotiation to complete without link
Previously, waiting for auto-negotiation would only occur if a valid
link had been detected. Problems arose when attempting to use a
tsec immediately after bootup but before link was achieved, eg:
=> dhcp
Auto-neg error, defaulting to 10BT/HD
eTSEC1: No link.
Auto-neg error, defaulting to 10BT/HD
eTSEC2: No link.
=>
With this patch applied the same operation as above resulted in:
=> dhcp
Waiting for PHY auto negotiation to complete. done
Enet starting in 1000BT/FD
Speed: 1000, full duplex
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
Diffstat (limited to 'drivers/net/tsec.c')
| -rw-r--r-- | drivers/net/tsec.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/drivers/net/tsec.c b/drivers/net/tsec.c index a9ba683..9c9fd37 100644 --- a/drivers/net/tsec.c +++ b/drivers/net/tsec.c @@ -356,8 +356,8 @@ uint mii_cr_init(uint mii_reg, struct tsec_private * priv) return MIIM_CR_INIT; } -/* Parse the status register for link, and then do - * auto-negotiation +/* + * Wait for auto-negotiation to complete, then determine link */ uint mii_parse_sr(uint mii_reg, struct tsec_private * priv) { @@ -366,8 +366,7 @@ uint mii_parse_sr(uint mii_reg, struct tsec_private * priv) * (ie - we're capable and it's not done) */ mii_reg = read_phy_reg(priv, MIIM_STATUS); - if ((mii_reg & MIIM_STATUS_LINK) && (mii_reg & PHY_BMSR_AUTN_ABLE) - && !(mii_reg & PHY_BMSR_AUTN_COMP)) { + if ((mii_reg & PHY_BMSR_AUTN_ABLE) && !(mii_reg & PHY_BMSR_AUTN_COMP)) { int i = 0; puts("Waiting for PHY auto negotiation to complete"); @@ -388,15 +387,15 @@ uint mii_parse_sr(uint mii_reg, struct tsec_private * priv) mii_reg = read_phy_reg(priv, MIIM_STATUS); } puts(" done\n"); - priv->link = 1; + + /* Link status bit is latched low, read it again */ + mii_reg = read_phy_reg(priv, MIIM_STATUS); + udelay(500000); /* another 500 ms (results in faster booting) */ - } else { - if (mii_reg & MIIM_STATUS_LINK) - priv->link = 1; - else - priv->link = 0; } + priv->link = mii_reg & MIIM_STATUS_LINK ? 1 : 0; + return 0; } |