From: Mikhail Kshevetskiy <mikhail.kshevetskiy@iopsys.eu>
Date: Fri, 30 Jan 2026 22:06:25 +0000 (+0300)
Subject: net: mdio-mt7531-mmio: fix switch regs initialization
X-Git-Tag: v2026.04-rc2~3^2~5
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3aabc0dae03b824ffae06a16a48bf2c89b5c36e7;p=thirdparty%2Fu-boot.git

net: mdio-mt7531-mmio: fix switch regs initialization

mdio is a child node of the switch, so to get switch base address
we need to lookup for a parent node

Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevetskiy@iopsys.eu>
---

diff --git a/drivers/net/mdio-mt7531-mmio.c b/drivers/net/mdio-mt7531-mmio.c
index 3e325ca58da..5a0725010f2 100644
--- a/drivers/net/mdio-mt7531-mmio.c
+++ b/drivers/net/mdio-mt7531-mmio.c
@@ -151,8 +151,13 @@ static const struct mdio_ops mt7531_mdio_ops = {
 static int mt7531_mdio_probe(struct udevice *dev)
 {
 	struct mt7531_mdio_priv *priv = dev_get_priv(dev);
+	ofnode switch_node;
 
-	priv->switch_regs = dev_read_addr(dev);
+	switch_node = ofnode_get_parent(dev_ofnode(dev));
+	if (!ofnode_valid(switch_node))
+		return -EINVAL;
+
+	priv->switch_regs = ofnode_get_addr(switch_node);
 	if (priv->switch_regs == FDT_ADDR_T_NONE)
 		return -EINVAL;