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| author | Marc Kleine-Budde <mkl@pengutronix.de> | 2009-05-18 15:48:44 +0200 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2009-05-18 16:20:04 +0200 |
| commit | 4a770377d1e12682a4ed19692c8d2898afe67a0e (patch) | |
| tree | b84c5dedda7d6db26ca4ab67bd77ef090b6f6934 /drivers/net | |
| parent | 26a8987c46ff250ba3ecee9b4112fca07844800c (diff) | |
| download | barebox-4a770377d1e12682a4ed19692c8d2898afe67a0e.tar.gz barebox-4a770377d1e12682a4ed19692c8d2898afe67a0e.tar.xz | |
[miiphy] add feature to force link present
If a NIC's MII isn't connected to a PHY but directly to a switch port,
the switch doesn't sent a link signal to the NIC. (Because strictly
speaking, there isn't any ethernet link at all.)
This patch adds a force link feature to the phy, to cope with this
situation.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/miiphy.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/net/miiphy.c b/drivers/net/miiphy.c index a82ef75b59..43d37f5c77 100644 --- a/drivers/net/miiphy.c +++ b/drivers/net/miiphy.c @@ -35,6 +35,10 @@ int miiphy_restart_aneg(struct miiphy_device *mdev) * Reset PHY, then delay 300ns */ mdev->write(mdev, mdev->address, MII_BMCR, BMCR_RESET); + + if (mdev->flags & MIIPHY_FORCE_LINK) + return 0; + udelay(1000); if (mdev->flags & MIIPHY_FORCE_10) { @@ -71,6 +75,9 @@ int miiphy_wait_aneg(struct miiphy_device *mdev) uint64_t start; uint16_t status; + if (mdev->flags & MIIPHY_FORCE_LINK) + return 0; + /* * Wait for AN completion */ @@ -96,6 +103,11 @@ int miiphy_print_status(struct miiphy_device *mdev) char *duplex; int speed; + if (mdev->flags & MIIPHY_FORCE_LINK) { + printf("Forcing link present...\n"); + return 0; + } + if (mdev->read(mdev, mdev->address, MII_BMSR, &bmsr) != 0) goto err_out; if (mdev->read(mdev, mdev->address, MII_BMCR, &bmcr) != 0) |