On Mon, Jul 30, 2018 at 02:43:55PM +0200, Quentin Schulz wrote:

+		err = of_get_phy_mode(portnp);
+		if (err < 0)
+			ocelot->ports[port]->phy_mode = PHY_INTERFACE_MODE_NA;
+		else
+			ocelot->ports[port]->phy_mode = err;
+
+		if (ocelot->ports[port]->phy_mode == PHY_INTERFACE_MODE_NA)
+			continue;
+
+		if (ocelot->ports[port]->phy_mode == PHY_INTERFACE_MODE_SGMII)
+			phy_mode = PHY_MODE_SGMII;
+		else
+			phy_mode = PHY_MODE_QSGMII;

Hi Quentin

Say somebody puts RGMII as the phy-mode? It would be better to verify
it is only SGMII or QSGMII and return -EINVAL otherwise.

+
+		serdes = devm_of_phy_get(ocelot->dev, portnp, NULL);
+		if (IS_ERR(serdes)) {
+			if (PTR_ERR(serdes) == -EPROBE_DEFER) {
+				dev_err(ocelot->dev, "deferring probe\n");

dev_dbg() ? It is not really an error.

+				err = -EPROBE_DEFER;
+				goto err_probe_ports;
+			}
+
+			dev_err(ocelot->dev, "missing SerDes phys for port%d\n",
+				port);
+			err = -ENODEV;

err = PTR_ERR(serdes) so we get the actual error?

 			goto err_probe_ports;
 		}
+
+		ocelot->ports[port]->serdes = serdes;
 	}
 
 	register_netdevice_notifier(&ocelot_netdevice_nb);

	Andrew