diff --git a/drivers/net/fsl_enetc.c b/drivers/net/fsl_enetc.c
index 52fa820..97cccda 100644
--- a/drivers/net/fsl_enetc.c
+++ b/drivers/net/fsl_enetc.c
@@ -473,13 +473,15 @@
 /* Apply protocol specific configuration to MAC, serdes as needed */
 static void enetc_start_pcs(struct udevice *dev)
 {
+	struct enetc_data *data = (struct enetc_data *)dev_get_driver_data(dev);
 	struct enetc_priv *priv = dev_get_priv(dev);
 
 	/* register internal MDIO for debug purposes */
 	if (enetc_read_pcapr_mdio(dev)) {
 		priv->imdio.read = enetc_mdio_read;
 		priv->imdio.write = enetc_mdio_write;
-		priv->imdio.priv = priv->port_regs + ENETC_PM_IMDIO_BASE;
+		priv->imdio.priv = priv->port_regs + data->reg_offset_mac +
+		                   ENETC_PM_IMDIO_BASE;
 		strlcpy(priv->imdio.name, dev->name, MDIO_NAME_LEN);
 		if (!miiphy_get_dev_by_name(priv->imdio.name))
 			mdio_register(&priv->imdio);