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@@ -56,6 +56,32 @@ static int smsc_phy_config_init(struct phy_device *phydev)
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return smsc_phy_ack_interrupt (phydev);
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}
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+static int lan87xx_config_init(struct phy_device *phydev)
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+{
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+ /*
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+ * Make sure the EDPWRDOWN bit is NOT set. Setting this bit on
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+ * LAN8710/LAN8720 PHY causes the PHY to misbehave, likely due
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+ * to a bug on the chip.
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+ *
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+ * When the system is powered on with the network cable being
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+ * disconnected all the way until after ifconfig ethX up is
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+ * issued for the LAN port with this PHY, connecting the cable
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+ * afterwards does not cause LINK change detection, while the
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+ * expected behavior is the Link UP being detected.
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+ */
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+ int rc = phy_read(phydev, MII_LAN83C185_CTRL_STATUS);
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+ if (rc < 0)
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+ return rc;
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+
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+ rc &= ~MII_LAN83C185_EDPWRDOWN;
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+
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+ rc = phy_write(phydev, MII_LAN83C185_CTRL_STATUS, rc);
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+ if (rc < 0)
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+ return rc;
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+
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+ return smsc_phy_ack_interrupt(phydev);
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+}
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+
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static int lan911x_config_init(struct phy_device *phydev)
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{
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return smsc_phy_ack_interrupt(phydev);
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@@ -162,7 +188,7 @@ static struct phy_driver smsc_phy_driver[] = {
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/* basic functions */
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.config_aneg = genphy_config_aneg,
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.read_status = genphy_read_status,
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- .config_init = smsc_phy_config_init,
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+ .config_init = lan87xx_config_init,
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/* IRQ related */
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.ack_interrupt = smsc_phy_ack_interrupt,
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