| Message ID | 20250322-tn9510-v3a-v7-1-672a9a3d8628@gmx.net (mailing list archive) |
|---|---|
| State | New |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | net: tn40xx: add support for AQR105 based cards | expand |
On Sat, Mar 22, 2025 at 11:45:52AM +0100, Hans-Frieder Vogt via B4 Relay wrote: > From: Hans-Frieder Vogt <hfdevel@gmx.net> > > This patch will allow to use a swnode/fwnode defined for 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> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Andrew
diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c index 7e2f10182c0cf37bef4cea1820863f047b5cb466..ede596c1a69d1b2b986e9eef51c3beb4a5fbc805 100644 --- a/drivers/net/phy/mdio_bus.c +++ b/drivers/net/phy/mdio_bus.c @@ -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);