Add supply_name entries for all PCA9450 regulators to describe their
respective input pin groups (INB13, INB26, INB45, INL1). This links each
buck and LDO to the upstream supply that powers its input group.

On some systems, power faults such as undervoltage are detected before
the PMIC itself. Defining supply relationships allows the regulator
framework to propagate such events properly through the dependency
chain.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
---
 drivers/regulator/pca9450-regulator.c | 30 +++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/drivers/regulator/pca9450-regulator.c b/drivers/regulator/pca9450-regulator.c
index 4be270f4d6c3..247f12df8974 100644
--- a/drivers/regulator/pca9450-regulator.c
+++ b/drivers/regulator/pca9450-regulator.c
@@ -355,6 +355,7 @@ static struct pca9450_regulator_desc pca9450a_regulators[] = {
 	{
 		.desc = {
 			.name = "buck1",
+			.supply_name = "inb13",
 			.of_match = of_match_ptr("BUCK1"),
 			.regulators_node = of_match_ptr("regulators"),
 			.id = PCA9450_BUCK1,
@@ -388,6 +389,7 @@ static struct pca9450_regulator_desc pca9450a_regulators[] = {
 	{
 		.desc = {
 			.name = "buck2",
+			.supply_name = "inb26",
 			.of_match = of_match_ptr("BUCK2"),
 			.regulators_node = of_match_ptr("regulators"),
 			.id = PCA9450_BUCK2,
@@ -421,6 +423,7 @@ static struct pca9450_regulator_desc pca9450a_regulators[] = {
 	{
 		.desc = {
 			.name = "buck3",
+			.supply_name = "inb13",
 			.of_match = of_match_ptr("BUCK3"),
 			.regulators_node = of_match_ptr("regulators"),
 			.id = PCA9450_BUCK3,
@@ -454,6 +457,7 @@ static struct pca9450_regulator_desc pca9450a_regulators[] = {
 	{
 		.desc = {
 			.name = "buck4",
+			.supply_name = "inb45",
 			.of_match = of_match_ptr("BUCK4"),
 			.regulators_node = of_match_ptr("regulators"),
 			.id = PCA9450_BUCK4,
@@ -478,6 +482,7 @@ static struct pca9450_regulator_desc pca9450a_regulators[] = {
 	{
 		.desc = {
 			.name = "buck5",
+			.supply_name = "inb45",
 			.of_match = of_match_ptr("BUCK5"),
 			.regulators_node = of_match_ptr("regulators"),
 			.id = PCA9450_BUCK5,
@@ -502,6 +507,7 @@ static struct pca9450_regulator_desc pca9450a_regulators[] = {
 	{
 		.desc = {
 			.name = "buck6",
+			.supply_name = "inb26",
 			.of_match = of_match_ptr("BUCK6"),
 			.regulators_node = of_match_ptr("regulators"),
 			.id = PCA9450_BUCK6,
@@ -526,6 +532,7 @@ static struct pca9450_regulator_desc pca9450a_regulators[] = {
 	{
 		.desc = {
 			.name = "ldo1",
+			.supply_name = "inl1",
 			.of_match = of_match_ptr("LDO1"),
 			.regulators_node = of_match_ptr("regulators"),
 			.id = PCA9450_LDO1,
@@ -544,6 +551,7 @@ static struct pca9450_regulator_desc pca9450a_regulators[] = {
 	{
 		.desc = {
 			.name = "ldo2",
+			.supply_name = "inl1",
 			.of_match = of_match_ptr("LDO2"),
 			.regulators_node = of_match_ptr("regulators"),
 			.id = PCA9450_LDO2,
@@ -562,6 +570,7 @@ static struct pca9450_regulator_desc pca9450a_regulators[] = {
 	{
 		.desc = {
 			.name = "ldo3",
+			.supply_name = "inl1",
 			.of_match = of_match_ptr("LDO3"),
 			.regulators_node = of_match_ptr("regulators"),
 			.id = PCA9450_LDO3,
@@ -580,6 +589,7 @@ static struct pca9450_regulator_desc pca9450a_regulators[] = {
 	{
 		.desc = {
 			.name = "ldo4",
+			.supply_name = "inl1",
 			.of_match = of_match_ptr("LDO4"),
 			.regulators_node = of_match_ptr("regulators"),
 			.id = PCA9450_LDO4,
@@ -598,6 +608,7 @@ static struct pca9450_regulator_desc pca9450a_regulators[] = {
 	{
 		.desc = {
 			.name = "ldo5",
+			.supply_name = "inl1",
 			.of_match = of_match_ptr("LDO5"),
 			.regulators_node = of_match_ptr("regulators"),
 			.id = PCA9450_LDO5,
@@ -623,6 +634,7 @@ static struct pca9450_regulator_desc pca9450bc_regulators[] = {
 	{
 		.desc = {
 			.name = "buck1",
+			.supply_name = "inb13",
 			.of_match = of_match_ptr("BUCK1"),
 			.regulators_node = of_match_ptr("regulators"),
 			.id = PCA9450_BUCK1,
@@ -656,6 +668,7 @@ static struct pca9450_regulator_desc pca9450bc_regulators[] = {
 	{
 		.desc = {
 			.name = "buck2",
+			.supply_name = "inb26",
 			.of_match = of_match_ptr("BUCK2"),
 			.regulators_node = of_match_ptr("regulators"),
 			.id = PCA9450_BUCK2,
@@ -689,6 +702,7 @@ static struct pca9450_regulator_desc pca9450bc_regulators[] = {
 	{
 		.desc = {
 			.name = "buck4",
+			.supply_name = "inb45",
 			.of_match = of_match_ptr("BUCK4"),
 			.regulators_node = of_match_ptr("regulators"),
 			.id = PCA9450_BUCK4,
@@ -713,6 +727,7 @@ static struct pca9450_regulator_desc pca9450bc_regulators[] = {
 	{
 		.desc = {
 			.name = "buck5",
+			.supply_name = "inb45",
 			.of_match = of_match_ptr("BUCK5"),
 			.regulators_node = of_match_ptr("regulators"),
 			.id = PCA9450_BUCK5,
@@ -737,6 +752,7 @@ static struct pca9450_regulator_desc pca9450bc_regulators[] = {
 	{
 		.desc = {
 			.name = "buck6",
+			.supply_name = "inb26",
 			.of_match = of_match_ptr("BUCK6"),
 			.regulators_node = of_match_ptr("regulators"),
 			.id = PCA9450_BUCK6,
@@ -761,6 +777,7 @@ static struct pca9450_regulator_desc pca9450bc_regulators[] = {
 	{
 		.desc = {
 			.name = "ldo1",
+			.supply_name = "inl1",
 			.of_match = of_match_ptr("LDO1"),
 			.regulators_node = of_match_ptr("regulators"),
 			.id = PCA9450_LDO1,
@@ -779,6 +796,7 @@ static struct pca9450_regulator_desc pca9450bc_regulators[] = {
 	{
 		.desc = {
 			.name = "ldo2",
+			.supply_name = "inl1",
 			.of_match = of_match_ptr("LDO2"),
 			.regulators_node = of_match_ptr("regulators"),
 			.id = PCA9450_LDO2,
@@ -797,6 +815,7 @@ static struct pca9450_regulator_desc pca9450bc_regulators[] = {
 	{
 		.desc = {
 			.name = "ldo3",
+			.supply_name = "inl1",
 			.of_match = of_match_ptr("LDO3"),
 			.regulators_node = of_match_ptr("regulators"),
 			.id = PCA9450_LDO3,
@@ -815,6 +834,7 @@ static struct pca9450_regulator_desc pca9450bc_regulators[] = {
 	{
 		.desc = {
 			.name = "ldo4",
+			.supply_name = "inl1",
 			.of_match = of_match_ptr("LDO4"),
 			.regulators_node = of_match_ptr("regulators"),
 			.id = PCA9450_LDO4,
@@ -833,6 +853,7 @@ static struct pca9450_regulator_desc pca9450bc_regulators[] = {
 	{
 		.desc = {
 			.name = "ldo5",
+			.supply_name = "inl1",
 			.of_match = of_match_ptr("LDO5"),
 			.regulators_node = of_match_ptr("regulators"),
 			.id = PCA9450_LDO5,
@@ -854,6 +875,7 @@ static struct pca9450_regulator_desc pca9451a_regulators[] = {
 	{
 		.desc = {
 			.name = "buck1",
+			.supply_name = "inb13",
 			.of_match = of_match_ptr("BUCK1"),
 			.regulators_node = of_match_ptr("regulators"),
 			.id = PCA9450_BUCK1,
@@ -886,6 +908,7 @@ static struct pca9450_regulator_desc pca9451a_regulators[] = {
 	{
 		.desc = {
 			.name = "buck2",
+			.supply_name = "inb26",
 			.of_match = of_match_ptr("BUCK2"),
 			.regulators_node = of_match_ptr("regulators"),
 			.id = PCA9450_BUCK2,
@@ -918,6 +941,7 @@ static struct pca9450_regulator_desc pca9451a_regulators[] = {
 	{
 		.desc = {
 			.name = "buck4",
+			.supply_name = "inb45",
 			.of_match = of_match_ptr("BUCK4"),
 			.regulators_node = of_match_ptr("regulators"),
 			.id = PCA9450_BUCK4,
@@ -942,6 +966,7 @@ static struct pca9450_regulator_desc pca9451a_regulators[] = {
 	{
 		.desc = {
 			.name = "buck5",
+			.supply_name = "inb45",
 			.of_match = of_match_ptr("BUCK5"),
 			.regulators_node = of_match_ptr("regulators"),
 			.id = PCA9450_BUCK5,
@@ -966,6 +991,7 @@ static struct pca9450_regulator_desc pca9451a_regulators[] = {
 	{
 		.desc = {
 			.name = "buck6",
+			.supply_name = "inb26",
 			.of_match = of_match_ptr("BUCK6"),
 			.regulators_node = of_match_ptr("regulators"),
 			.id = PCA9450_BUCK6,
@@ -990,6 +1016,7 @@ static struct pca9450_regulator_desc pca9451a_regulators[] = {
 	{
 		.desc = {
 			.name = "ldo1",
+			.supply_name = "inl1",
 			.of_match = of_match_ptr("LDO1"),
 			.regulators_node = of_match_ptr("regulators"),
 			.id = PCA9450_LDO1,
@@ -1008,6 +1035,7 @@ static struct pca9450_regulator_desc pca9451a_regulators[] = {
 	{
 		.desc = {
 			.name = "ldo3",
+			.supply_name = "inl1",
 			.of_match = of_match_ptr("LDO3"),
 			.regulators_node = of_match_ptr("regulators"),
 			.id = PCA9450_LDO3,
@@ -1026,6 +1054,7 @@ static struct pca9450_regulator_desc pca9451a_regulators[] = {
 	{
 		.desc = {
 			.name = "ldo4",
+			.supply_name = "inl1",
 			.of_match = of_match_ptr("LDO4"),
 			.regulators_node = of_match_ptr("regulators"),
 			.id = PCA9450_LDO4,
@@ -1044,6 +1073,7 @@ static struct pca9450_regulator_desc pca9451a_regulators[] = {
 	{
 		.desc = {
 			.name = "ldo5",
+			.supply_name = "inl1",
 			.of_match = of_match_ptr("LDO5"),
 			.regulators_node = of_match_ptr("regulators"),
 			.id = PCA9450_LDO5,
-- 
2.47.3