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net: ftgmac100: support fixed link

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Support fixed link in ftgmac100 driver. Fixed link is used on several
Meta OpenBMC platforms, such as Elbert (AST2620) and Wedge400 (AST2520).

Signed-off-by: Tao Ren <rentao.bupt@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Tao Ren 2022-09-06 22:44:52 -07:00 committed by Paolo Abeni
parent 9724343e49
commit 38561ded50
1 changed files with 24 additions and 0 deletions
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24
drivers/net/ethernet/faraday/ftgmac100.c
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@ -1701,10 +1701,14 @@ err_register_mdiobus:
static void ftgmac100_phy_disconnect(struct net_device *netdev)
{
struct ftgmac100 *priv = netdev_priv(netdev);
if (!netdev->phydev)
return;
phy_disconnect(netdev->phydev);
if (of_phy_is_fixed_link(priv->dev->of_node))
of_phy_deregister_fixed_link(priv->dev->of_node);
}
static void ftgmac100_destroy_mdio(struct net_device *netdev)
@ -1867,6 +1871,26 @@ static int ftgmac100_probe(struct platform_device *pdev)
err = -EINVAL;
goto err_phy_connect;
}
} else if (np && of_phy_is_fixed_link(np)) {
struct phy_device *phy;
err = of_phy_register_fixed_link(np);
if (err) {
dev_err(&pdev->dev, "Failed to register fixed PHY\n");
goto err_phy_connect;
}
phy = of_phy_get_and_connect(priv->netdev, np,
&ftgmac100_adjust_link);
if (!phy) {
dev_err(&pdev->dev, "Failed to connect to fixed PHY\n");
of_phy_deregister_fixed_link(np);
err = -EINVAL;
goto err_phy_connect;
}
/* Display what we found */
phy_attached_info(phy);
} else if (np && of_get_property(np, "phy-handle", NULL)) {
struct phy_device *phy;