When the ethernet device has a device_node then try finding
the associated phy via the phy-handle property.
This makes the phy handling via devicetree transparent to the
ethernet drivers.
Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
---
drivers/net/phy/phy.c | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index 1e26e45..257df74 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -262,6 +262,29 @@ int phy_register_device(struct phy_device* dev)
return ret;
}
+static struct phy_device *of_mdio_find_phy(struct eth_device *edev)
+{
+ struct device_d *dev;
+ struct device_node *phy_node;
+
+ if (!IS_ENABLED(CONFIG_OFDEVICE))
+ return NULL;
+
+ if (!edev->parent->device_node)
+ return NULL;
+
+ phy_node = of_parse_phandle(edev->parent->device_node, "phy-handle", 0);
+ if (!phy_node)
+ return NULL;
+
+ bus_for_each_device(&mdio_bus_type, dev) {
+ if (dev->device_node == phy_node)
+ return container_of(dev, struct phy_device, dev);
+ }
+
+ return NULL;
+}
+
static int phy_device_attach(struct phy_device *phy, struct eth_device *edev,
void (*adjust_link) (struct eth_device *edev),
u32 flags, phy_interface_t interface)
@@ -312,6 +335,13 @@ int phy_device_connect(struct eth_device *edev, struct mii_bus *bus, int addr,
return 0;
}
+ phy = of_mdio_find_phy(edev);
+ if (phy) {
+ ret = phy_device_attach(phy, edev, adjust_link, flags, interface);
+
+ goto out;
+ }
+
if (addr >= 0) {
phy = mdiobus_scan(bus, addr);
if (IS_ERR(phy)) {
--
2.0.0.rc0
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