[PATCH 11/11] tlan: Isolate external PHY when using internal PHY
From: Ondrej Zary <hidden>
Date: 2014-06-30 16:39:47
Also in:
lkml
Subsystem:
networking drivers, the rest, tlan network driver · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds, Samuel Chessman
When using internal 10 Mbps PHY, isolate the external PHY from MII bus. External PHY must be kept powered up because it passes TX from tlan chip to network. This fixes weird link-loss problems under load with OC-2326 card at 10 Mbps. Signed-off-by: Ondrej Zary <redacted> --- drivers/net/ethernet/ti/tlan.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/ti/tlan.c b/drivers/net/ethernet/ti/tlan.c
index dbded9f..a13c25a 100644
--- a/drivers/net/ethernet/ti/tlan.c
+++ b/drivers/net/ethernet/ti/tlan.c@@ -2529,9 +2529,10 @@ static void tlan_phy_power_down(struct net_device *dev) value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE; tlan_mii_sync(dev->base_addr); tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value); - if ((priv->phy_num == 0) && - (priv->phy[1] != TLAN_PHY_NONE) && - (!(priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10))) { + if ((priv->phy_num == 0) && (priv->phy[1] != TLAN_PHY_NONE)) { + /* if using internal PHY, the external PHY must be powered on */ + if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) + value = MII_GC_ISOLATE; /* just isolate it from MII */ tlan_mii_sync(dev->base_addr); tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value); }
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Ondrej Zary