net: ti: icssg_prueth: use 10M half duplex as default

Half duplex operation requires the INBAND mode to be configured
before the link is up. So make this 10M half duplex as default
so that INBAND mode is configured while link is down.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>

drivers/net/ethernet/ti/icssg_prueth.c

@@ -933,6 +933,16 @@ static void prueth_emac_stop(struct prueth_emac *emac)
 	rproc_shutdown(prueth->pru[slice]);
 }
 
+static void emac_set_default_mii_config(struct prueth_emac *emac)
+{
+	struct prueth *prueth = emac->prueth;
+	int slice = prueth_emac_slice(emac);
+
+	icssg_update_rgmii_cfg(prueth->miig_rt, SPEED_10,
+			       false, slice);
+	icssg_update_mii_rt_cfg(prueth->mii_rt, SPEED_10, slice);
+}
+
 /* called back by PHY layer if there is change in link state of hw port*/
 static void emac_adjust_link(struct net_device *ndev)
 {
@@ -964,8 +974,8 @@ static void emac_adjust_link(struct net_device *ndev)
 		new_state = true;
 		emac->link = 0;
 		/* defaults for no link */
-		emac->speed = SPEED_1000;
-		emac->duplex = DUPLEX_FULL;
+		emac->speed = SPEED_10;
+		emac->duplex = DUPLEX_HALF;
 	}
 
 	if (new_state) {
@@ -996,10 +1006,7 @@ static void emac_adjust_link(struct net_device *ndev)
 			icssg_update_mii_rt_cfg(prueth->mii_rt, emac->speed,
 						slice);
 		} else {
-			icssg_update_rgmii_cfg(prueth->miig_rt, emac->speed,
-					       true, slice);
-			icssg_update_mii_rt_cfg(prueth->mii_rt, emac->speed,
-						slice);
+			emac_set_default_mii_config(emac);
 		}
 	}
 
@@ -1138,6 +1145,8 @@ static int emac_ndo_open(struct net_device *ndev)
 	if (ret)
 		goto free_rx_mgm_irq;
 
+	emac_set_default_mii_config(emac);
+
 	/* start PHY */
 	phy_start(emac->phydev);