From: Markus Niebel <Markus.Niebel@ew.tq-group.com>
Date: Fri, 21 Nov 2025 17:34:47 +0000 (+0100)
Subject: net: fec_mxc: add unique bus and device names for DM_MDIO
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c5d3f7ac8e78d199cd961bee2c3f63726a1c4c69;p=thirdparty%2Fu-boot.git

net: fec_mxc: add unique bus and device names for DM_MDIO

When using DM_MDIO on SOC with more than one FEC and not sharing the MDIO
bus the name of the driver and the bus needs to be unique. Since name
used in device_bind_driver_to_node needs to be a static string, add the
string to the fec_priv struct and reuse fec_set_dev_name to generate the
name with the device sequence number.

Fixes: 3b8f99a3e762 ("net: fec: add support for DM_MDIO")

Signed-off-by: Markus Niebel <Markus.Niebel@ew.tq-group.com>
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Alexander Feilke <alexander.feilke@ew.tq-group.com>
---

diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c
index f62366dde6e..512f96e8df9 100644
--- a/drivers/net/fec_mxc.c
+++ b/drivers/net/fec_mxc.c
@@ -1067,6 +1067,7 @@ U_BOOT_DRIVER(fec_mdio) = {
 
 static int dm_fec_bind_mdio(struct udevice *dev)
 {
+	struct fec_priv *fec = dev_get_priv(dev);
 	struct udevice *mdiodev;
 	const char *name;
 	ofnode mdio;
@@ -1081,8 +1082,9 @@ static int dm_fec_bind_mdio(struct udevice *dev)
 		if (strcmp(name, "mdio"))
 			continue;
 
+		fec_set_dev_name(fec->mdio_name, dev_seq(dev));
 		ret = device_bind_driver_to_node(dev, "fec_mdio",
-						 name, mdio, &mdiodev);
+						 fec->mdio_name, mdio, &mdiodev);
 		if (ret) {
 			printf("%s bind %s failed: %d\n", __func__, name, ret);
 			break;
@@ -1369,7 +1371,7 @@ static int fecmxc_probe(struct udevice *dev)
 	 */
 	ret = dm_fec_bind_mdio(dev);
 	if (!ret)
-		bus = miiphy_get_dev_by_name("mdio");
+		bus = miiphy_get_dev_by_name(priv->mdio_name);
 	else if (ret != -ENODEV)
 		return ret;
 #endif
diff --git a/drivers/net/fec_mxc.h b/drivers/net/fec_mxc.h
index 12cc00423fa..8e95b539cd6 100644
--- a/drivers/net/fec_mxc.h
+++ b/drivers/net/fec_mxc.h
@@ -256,6 +256,7 @@ struct fec_priv {
 	int (*mii_postcall)(int);
 #endif
 #ifdef CONFIG_DM_MDIO
+	char mdio_name[MDIO_NAME_LEN];
 	struct udevice *mdio_bus;
 #endif
 #ifdef CONFIG_DM_REGULATOR