realtek: mdio: drop interfaces attribute

The interfaces attribute of the mdio bus held the information
about the connection mode (qsgmii, sgmii, ...). This was only
used during the old RTL930x setup. Drop it because it is not
needed any longer.

Signed-off-by: Markus Stockhausen <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/21469
Signed-off-by: Stijn Tintel <[email protected]>

target/linux/realtek/files-6.12/drivers/net/mdio/mdio-realtek-otto.c

@@ -150,7 +150,6 @@ struct rtmdio_bus_priv {
 	int smi_bus[RTMDIO_MAX_PORT];
 	u8 smi_addr[RTMDIO_MAX_PORT];
 	bool smi_bus_isc45[RTMDIO_MAX_SMI_BUS];
-	phy_interface_t interfaces[RTMDIO_MAX_PORT];
 };
 
 struct rtmdio_config {
@@ -1081,17 +1080,6 @@ static int rtmdio_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
-	for_each_node_by_name(dn, "port") {
-		if (of_property_read_u32(dn, "reg", &pn))
-			continue;
-		dev_dbg(dev, "Looking at port %d\n", pn);
-		if (pn > priv->cfg->cpu_port)
-			continue;
-		if (of_get_phy_mode(dn, &priv->interfaces[pn]))
-			priv->interfaces[pn] = PHY_INTERFACE_MODE_NA;
-		dev_dbg(dev, "phy mode of port %d is %s\n", pn, phy_modes(priv->interfaces[pn]));
-	}
-
 	snprintf(bus->id, MII_BUS_ID_SIZE, "%s-mii", dev_name(dev));
 
 	return devm_of_mdiobus_register(dev, bus, mii_np);