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net: ftgmac100: add handling of mdio/phy nodes for ast2400/2500

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phy-handle can't be handled well for ast2400/2500 which has an embedded
MDIO controller. Add ftgmac100_mdio_setup for ast2400/2500 and initialize
PHYs from mdio child node with of_mdiobus_register.

Signed-off-by: Ivan Mikhaylov <i.mikhaylov@yadro.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Ivan Mikhaylov 2020-10-30 16:37:06 +03:00 committed by Jakub Kicinski
parent 68ed78b523
commit f8b7b50c84
1 changed files with 18 additions and 2 deletions
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20
drivers/net/ethernet/faraday/ftgmac100.c
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@ -1631,6 +1631,7 @@ static int ftgmac100_setup_mdio(struct net_device *netdev)
struct ftgmac100 *priv = netdev_priv(netdev);
struct platform_device *pdev = to_platform_device(priv->dev);
struct device_node *np = pdev->dev.of_node;
struct device_node *mdio_np;
int i, err = 0;
u32 reg;
@ -1662,12 +1663,16 @@ static int ftgmac100_setup_mdio(struct net_device *netdev)
for (i = 0; i < PHY_MAX_ADDR; i++)
priv->mii_bus->irq[i] = PHY_POLL;
err = mdiobus_register(priv->mii_bus);
mdio_np = of_get_child_by_name(np, "mdio");
err = of_mdiobus_register(priv->mii_bus, mdio_np);
if (err) {
dev_err(priv->dev, "Cannot register MDIO bus!\n");
goto err_register_mdiobus;
}
of_node_put(mdio_np);
return 0;
err_register_mdiobus:
@ -1835,11 +1840,22 @@ static int ftgmac100_probe(struct platform_device *pdev)
} else if (np && of_get_property(np, "phy-handle", NULL)) {
struct phy_device *phy;
/* Support "mdio"/"phy" child nodes for ast2400/2500 with
* an embedded MDIO controller. Automatically scan the DTS for
* available PHYs and register them.
*/
if (of_device_is_compatible(np, "aspeed,ast2400-mac") ||
of_device_is_compatible(np, "aspeed,ast2500-mac")) {
err = ftgmac100_setup_mdio(netdev);
if (err)
goto err_setup_mdio;
}
phy = of_phy_get_and_connect(priv->netdev, np,
&ftgmac100_adjust_link);
if (!phy) {
dev_err(&pdev->dev, "Failed to connect to phy\n");
goto err_setup_mdio;
goto err_phy_connect;
}
/* Indicate that we support PAUSE frames (see comment in