7 files changed, 44 insertions, 17 deletions

diff --git a/drivers/net/ethernet/ti/cpmac.c b/drivers/net/ethernet/ti/cpmac.c
index 80eeeb463c4f..bc9b5d18427d 100644
--- a/drivers/net/ethernet/ti/cpmac.c
+++ b/drivers/net/ethernet/ti/cpmac.c
@@ -1151,14 +1151,12 @@ fail:
 	return rc;
 }
 
-static int cpmac_remove(struct platform_device *pdev)
+static void cpmac_remove(struct platform_device *pdev)
 {
 	struct net_device *dev = platform_get_drvdata(pdev);
 
 	unregister_netdev(dev);
 	free_netdev(dev);
-
-	return 0;
 }
 
 static struct platform_driver cpmac_driver = {
@@ -1166,7 +1164,7 @@ static struct platform_driver cpmac_driver = {
 		.name 	= "cpmac",
 	},
 	.probe 	= cpmac_probe,
-	.remove = cpmac_remove,
+	.remove_new = cpmac_remove,
 };
 
 int __init cpmac_init(void)
diff --git a/drivers/net/ethernet/ti/davinci_emac.c b/drivers/net/ethernet/ti/davinci_emac.c
index 2eb9d5a32588..5d756df133eb 100644
--- a/drivers/net/ethernet/ti/davinci_emac.c
+++ b/drivers/net/ethernet/ti/davinci_emac.c
@@ -2002,7 +2002,7 @@ err_free_netdev:
  * Called when removing the device driver. We disable clock usage and release
  * the resources taken up by the driver and unregister network device
  */
-static int davinci_emac_remove(struct platform_device *pdev)
+static void davinci_emac_remove(struct platform_device *pdev)
 {
 	struct net_device *ndev = platform_get_drvdata(pdev);
 	struct emac_priv *priv = netdev_priv(ndev);
@@ -2022,8 +2022,6 @@ static int davinci_emac_remove(struct platform_device *pdev)
 	if (of_phy_is_fixed_link(np))
 		of_phy_deregister_fixed_link(np);
 	free_netdev(ndev);
-
-	return 0;
 }
 
 static int davinci_emac_suspend(struct device *dev)
@@ -2076,7 +2074,7 @@ static struct platform_driver davinci_emac_driver = {
 		.of_match_table = davinci_emac_of_match,
 	},
 	.probe = davinci_emac_probe,
-	.remove = davinci_emac_remove,
+	.remove_new = davinci_emac_remove,
 };
 
 /**
diff --git a/drivers/net/ethernet/ti/davinci_mdio.c b/drivers/net/ethernet/ti/davinci_mdio.c
index 89b6d23e9937..628c87dc1d28 100644
--- a/drivers/net/ethernet/ti/davinci_mdio.c
+++ b/drivers/net/ethernet/ti/davinci_mdio.c
@@ -673,7 +673,7 @@ bail_out:
 	return ret;
 }
 
-static int davinci_mdio_remove(struct platform_device *pdev)
+static void davinci_mdio_remove(struct platform_device *pdev)
 {
 	struct davinci_mdio_data *data = platform_get_drvdata(pdev);
 
@@ -686,8 +686,6 @@ static int davinci_mdio_remove(struct platform_device *pdev)
 
 	pm_runtime_dont_use_autosuspend(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
-
-	return 0;
 }
 
 #ifdef CONFIG_PM
@@ -766,7 +764,7 @@ static struct platform_driver davinci_mdio_driver = {
 		.of_match_table = of_match_ptr(davinci_mdio_of_mtable),
 	},
 	.probe = davinci_mdio_probe,
-	.remove = davinci_mdio_remove,
+	.remove_new = davinci_mdio_remove,
 };
 
 static int __init davinci_mdio_init(void)
diff --git a/drivers/net/ethernet/ti/icssg/icssg_config.c b/drivers/net/ethernet/ti/icssg/icssg_config.c
index 933b84666574..c1da70f247d4 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_config.c
+++ b/drivers/net/ethernet/ti/icssg/icssg_config.c
@@ -433,6 +433,17 @@ int emac_set_port_state(struct prueth_emac *emac,
 	return ret;
 }
 
+void icssg_config_half_duplex(struct prueth_emac *emac)
+{
+	u32 val;
+
+	if (!emac->half_duplex)
+		return;
+
+	val = get_random_u32();
+	writel(val, emac->dram.va + HD_RAND_SEED_OFFSET);
+}
+
 void icssg_config_set_speed(struct prueth_emac *emac)
 {
 	u8 fw_speed;
@@ -453,5 +464,8 @@ void icssg_config_set_speed(struct prueth_emac *emac)
 		return;
 	}
 
+	if (emac->duplex == DUPLEX_HALF)
+		fw_speed |= FW_LINK_SPEED_HD;
+
 	writeb(fw_speed, emac->dram.va + PORT_LINK_SPEED_OFFSET);
 }
diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.c b/drivers/net/ethernet/ti/icssg/icssg_prueth.c
index 410612f43cbd..6635b28bc672 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_prueth.c
+++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.c
@@ -1029,6 +1029,8 @@ static void emac_adjust_link(struct net_device *ndev)
 		 * values
 		 */
 		if (emac->link) {
+			if (emac->duplex == DUPLEX_HALF)
+				icssg_config_half_duplex(emac);
 			/* Set the RGMII cfg for gig en and full duplex */
 			icssg_update_rgmii_cfg(prueth->miig_rt, emac);
 
@@ -1147,9 +1149,13 @@ static int emac_phy_connect(struct prueth_emac *emac)
 		return -ENODEV;
 	}
 
+	if (!emac->half_duplex) {
+		dev_dbg(prueth->dev, "half duplex mode is not supported\n");
+		phy_remove_link_mode(ndev->phydev, ETHTOOL_LINK_MODE_10baseT_Half_BIT);
+		phy_remove_link_mode(ndev->phydev, ETHTOOL_LINK_MODE_100baseT_Half_BIT);
+	}
+
 	/* remove unsupported modes */
-	phy_remove_link_mode(ndev->phydev, ETHTOOL_LINK_MODE_10baseT_Half_BIT);
-	phy_remove_link_mode(ndev->phydev, ETHTOOL_LINK_MODE_100baseT_Half_BIT);
 	phy_remove_link_mode(ndev->phydev, ETHTOOL_LINK_MODE_1000baseT_Half_BIT);
 	phy_remove_link_mode(ndev->phydev, ETHTOOL_LINK_MODE_Pause_BIT);
 	phy_remove_link_mode(ndev->phydev, ETHTOOL_LINK_MODE_Asym_Pause_BIT);
@@ -2113,6 +2119,10 @@ static int prueth_probe(struct platform_device *pdev)
 				      eth0_node->name);
 			goto exit_iep;
 		}
+
+		if (of_find_property(eth0_node, "ti,half-duplex-capable", NULL))
+			prueth->emac[PRUETH_MAC0]->half_duplex = 1;
+
 		prueth->emac[PRUETH_MAC0]->iep = prueth->iep0;
 	}
 
@@ -2124,6 +2134,9 @@ static int prueth_probe(struct platform_device *pdev)
 			goto netdev_exit;
 		}
 
+		if (of_find_property(eth1_node, "ti,half-duplex-capable", NULL))
+			prueth->emac[PRUETH_MAC1]->half_duplex = 1;
+
 		prueth->emac[PRUETH_MAC1]->iep = prueth->iep0;
 	}
 
@@ -2313,8 +2326,13 @@ static const struct prueth_pdata am654_icssg_pdata = {
 	.quirk_10m_link_issue = 1,
 };
 
+static const struct prueth_pdata am64x_icssg_pdata = {
+	.fdqring_mode = K3_RINGACC_RING_MODE_RING,
+};
+
 static const struct of_device_id prueth_dt_match[] = {
 	{ .compatible = "ti,am654-icssg-prueth", .data = &am654_icssg_pdata },
+	{ .compatible = "ti,am642-icssg-prueth", .data = &am64x_icssg_pdata },
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, prueth_dt_match);
diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.h b/drivers/net/ethernet/ti/icssg/icssg_prueth.h
index 3fe80a8758d3..8b6d6b497010 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_prueth.h
+++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.h
@@ -145,6 +145,7 @@ struct prueth_emac {
 	struct icss_iep *iep;
 	unsigned int rx_ts_enabled : 1;
 	unsigned int tx_ts_enabled : 1;
+	unsigned int half_duplex : 1;
 
 	/* DMA related */
 	struct prueth_tx_chn tx_chns[PRUETH_MAX_TX_QUEUES];
@@ -271,6 +272,7 @@ int icssg_config(struct prueth *prueth, struct prueth_emac *emac,
 int emac_set_port_state(struct prueth_emac *emac,
 			enum icssg_port_state_cmd state);
 void icssg_config_set_speed(struct prueth_emac *emac);
+void icssg_config_half_duplex(struct prueth_emac *emac);
 
 /* Buffer queue helpers */
 int icssg_queue_pop(struct prueth *prueth, u8 queue);
diff --git a/drivers/net/ethernet/ti/netcp_core.c b/drivers/net/ethernet/ti/netcp_core.c
index d829113c16ee..11b90e1da0c6 100644
--- a/drivers/net/ethernet/ti/netcp_core.c
+++ b/drivers/net/ethernet/ti/netcp_core.c
@@ -2228,7 +2228,7 @@ probe_quit:
 	return ret;
 }
 
-static int netcp_remove(struct platform_device *pdev)
+static void netcp_remove(struct platform_device *pdev)
 {
 	struct netcp_device *netcp_device = platform_get_drvdata(pdev);
 	struct netcp_intf *netcp_intf, *netcp_tmp;
@@ -2256,7 +2256,6 @@ static int netcp_remove(struct platform_device *pdev)
 	pm_runtime_put_sync(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
 	platform_set_drvdata(pdev, NULL);
-	return 0;
 }
 
 static const struct of_device_id of_match[] = {
@@ -2271,7 +2270,7 @@ static struct platform_driver netcp_driver = {
 		.of_match_table	= of_match,
 	},
 	.probe = netcp_probe,
-	.remove = netcp_remove,
+	.remove_new = netcp_remove,
 };
 module_platform_driver(netcp_driver);