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| author | Andy Fleming <afleming@freescale.com> | 2007-08-15 20:03:44 -0500 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2007-08-16 12:12:53 +0200 |
| commit | 7613afda77d5eec0f47d303025b0c661b70e4c73 (patch) | |
| tree | ccf0fceb569527e0c5242ab152f00b60697a1cdd /drivers/tsec.c | |
| parent | b96c83d4ae475a70ef2635cd0e748174c44c8601 (diff) | |
| download | u-boot-imx-7613afda77d5eec0f47d303025b0c661b70e4c73.zip u-boot-imx-7613afda77d5eec0f47d303025b0c661b70e4c73.tar.gz u-boot-imx-7613afda77d5eec0f47d303025b0c661b70e4c73.tar.bz2 | |
Don't wait for disconnected TSECs
The TSEC driver's PHY code waits a long time for autonegotiation to
complete, even if the link is down. The PHY knows the link is
down or up before autonegotiation completes, so we can short-circuit
the process if the link is down.
Signed-off-by: Andy Fleming <afleming@freescale.com>
Diffstat (limited to 'drivers/tsec.c')
| -rw-r--r-- | drivers/tsec.c | 30 |
1 files changed, 17 insertions, 13 deletions
diff --git a/drivers/tsec.c b/drivers/tsec.c index 1df8f7d..6bca4dc 100644 --- a/drivers/tsec.c +++ b/drivers/tsec.c @@ -347,17 +347,16 @@ uint mii_cr_init(uint mii_reg, struct tsec_private * priv) uint mii_parse_sr(uint mii_reg, struct tsec_private * priv) { /* - * Wait if PHY is capable of autonegotiation and autonegotiation - * is not complete. + * Wait if the link is up, and autonegotiation is in progress + * (ie - we're capable and it's not done) */ mii_reg = read_phy_reg(priv, MIIM_STATUS); - if ((mii_reg & PHY_BMSR_AUTN_ABLE) + if ((mii_reg & MIIM_STATUS_LINK) && (mii_reg & PHY_BMSR_AUTN_ABLE) && !(mii_reg & PHY_BMSR_AUTN_COMP)) { int i = 0; puts("Waiting for PHY auto negotiation to complete"); - while (!((mii_reg & PHY_BMSR_AUTN_COMP) - && (mii_reg & MIIM_STATUS_LINK))) { + while (!(mii_reg & PHY_BMSR_AUTN_COMP)) { /* * Timeout reached ? */ @@ -377,7 +376,10 @@ uint mii_parse_sr(uint mii_reg, struct tsec_private * priv) priv->link = 1; udelay(500000); /* another 500 ms (results in faster booting) */ } else { - priv->link = 1; + if (mii_reg & MIIM_STATUS_LINK) + priv->link = 1; + else + priv->link = 0; } return 0; @@ -517,16 +519,13 @@ uint mii_parse_88E1011_psr(uint mii_reg, struct tsec_private * priv) mii_reg = read_phy_reg(priv, MIIM_88E1011_PHY_STATUS); - if (!((mii_reg & MIIM_88E1011_PHYSTAT_SPDDONE) && - (mii_reg & MIIM_88E1011_PHYSTAT_LINK))) { + if ((mii_reg & MIIM_88E1011_PHYSTAT_LINK) && + !(mii_reg & MIIM_88E1011_PHYSTAT_SPDDONE)) { int i = 0; puts("Waiting for PHY realtime link"); - while (!((mii_reg & MIIM_88E1011_PHYSTAT_SPDDONE) && - (mii_reg & MIIM_88E1011_PHYSTAT_LINK))) { - /* - * Timeout reached ? - */ + while (!(mii_reg & MIIM_88E1011_PHYSTAT_SPDDONE)) { + /* Timeout reached ? */ if (i > PHY_AUTONEGOTIATE_TIMEOUT) { puts(" TIMEOUT !\n"); priv->link = 0; @@ -541,6 +540,11 @@ uint mii_parse_88E1011_psr(uint mii_reg, struct tsec_private * priv) } puts(" done\n"); udelay(500000); /* another 500 ms (results in faster booting) */ + } else { + if (mii_reg & MIIM_88E1011_PHYSTAT_LINK) + priv->link = 1; + else + priv->link = 0; } if (mii_reg & MIIM_88E1011_PHYSTAT_DUPLEX) |