diff --git a/drivers/mfd/madera-core.c b/drivers/mfd/madera-core.c
index dcc5c28925f223801d0855b427bd2f358b4529ab..bc4e25b5b97db10c353e60075de3db36043e0fd6 100644
--- a/drivers/mfd/madera-core.c
+++ b/drivers/mfd/madera-core.c
@@ -59,7 +59,11 @@ static const struct mfd_cell cs47l35_devs[] = {
 	{ .name = "madera-irq", },
 	{ .name = "madera-micsupp", },
 	{ .name = "madera-gpio", },
-	{ .name = "madera-extcon", },
+	{
+		.name = "madera-extcon",
+		.parent_supplies = cs47l35_supplies,
+		.num_parent_supplies = 1, /* We only need MICVDD */
+	},
 	{
 		.name = "cs47l35-codec",
 		.parent_supplies = cs47l35_supplies,
@@ -83,7 +87,11 @@ static const struct mfd_cell cs47l85_devs[] = {
 	{ .name = "madera-irq", },
 	{ .name = "madera-micsupp" },
 	{ .name = "madera-gpio", },
-	{ .name = "madera-extcon", },
+	{
+		.name = "madera-extcon",
+		.parent_supplies = cs47l85_supplies,
+		.num_parent_supplies = 1, /* We only need MICVDD */
+	},
 	{
 		.name = "cs47l85-codec",
 		.parent_supplies = cs47l85_supplies,
@@ -105,7 +113,11 @@ static const struct mfd_cell cs47l90_devs[] = {
 	{ .name = "madera-irq", },
 	{ .name = "madera-micsupp", },
 	{ .name = "madera-gpio", },
-	{ .name = "madera-extcon", },
+	{
+		.name = "madera-extcon",
+		.parent_supplies = cs47l90_supplies,
+		.num_parent_supplies = 1, /* We only need MICVDD */
+	},
 	{
 		.name = "cs47l90-codec",
 		.parent_supplies = cs47l90_supplies,