@@ -551,6 +551,8 @@ static int mdiobus_create_device(struct mii_bus *bus,
static struct phy_device *mdiobus_scan(struct mii_bus *bus, int addr, bool c45)
{
struct phy_device *phydev = ERR_PTR(-ENODEV);
+ struct fwnode_handle *fwnode;
+ char node_name[16];
int err;
phydev = get_phy_device(bus, addr, c45);
@@ -562,6 +564,18 @@ static struct phy_device *mdiobus_scan(struct mii_bus *bus, int addr, bool c45)
*/
of_mdiobus_link_mdiodev(bus, &phydev->mdio);
+ /* Search for a swnode for the phy in the swnode hierarchy of the bus.
+ * If there is no swnode for the phy provided, just ignore it.
+ */
+ if (dev_fwnode(&bus->dev) && !dev_fwnode(&phydev->mdio.dev)) {
+ snprintf(node_name, sizeof(node_name), "ethernet-phy@%d",
+ addr);
+ fwnode = fwnode_get_named_child_node(dev_fwnode(&bus->dev),
+ node_name);
+ if (fwnode)
+ device_set_node(&phydev->mdio.dev, fwnode);
+ }
+
err = phy_device_register(phydev);
if (err) {
phy_device_free(phydev);
Add swnode support to mdiobus_scan, to allow addition of a swnode/fwnode to a phy_device. The MDIO bus (mii_bus) needs to contain nodes for the PHY devices, named "ethernet-phy@i", with i being the MDIO address (0 .. PHY_MAX_ADDR - 1). The fwnode is only attached to the phy_device if there isn't already an fwnode attached. fwnode_get_named_child_node will increase the usage counter of the fwnode. However, no new code is needed to decrease the counter again, since this is already implemented in the phy_device_release function. Signed-off-by: Hans-Frieder Vogt <hfdevel@gmx.net> --- drivers/net/phy/mdio_bus.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) -- 2.45.2