diff --git a/arch/arm/boot/dts/tegra20-colibri-512.dtsi b/arch/arm/boot/dts/tegra20-colibri-512.dtsi
index d5c9bca01232fe40516b2dcd67a2561ebbfa7d50..cbe89ff10686b15e008cb4bfc42ac385038b6a4a 100644
--- a/arch/arm/boot/dts/tegra20-colibri-512.dtsi
+++ b/arch/arm/boot/dts/tegra20-colibri-512.dtsi
@@ -268,8 +268,8 @@
 					reg = <3>;
 					regulator-compatible = "sm2";
 					regulator-name = "vdd_sm2,vin_ldo*";
-					regulator-min-microvolt = <3700000>;
-					regulator-max-microvolt = <3700000>;
+					regulator-min-microvolt = <1800000>;
+					regulator-max-microvolt = <1800000>;
 					regulator-always-on;
 				};
 
diff --git a/drivers/regulator/tps6586x-regulator.c b/drivers/regulator/tps6586x-regulator.c
index e8e3a8afd3e279be7c524b3599316be05f9606a9..0485d47f0d8a82d9de595a8df5bd73c16111d4f2 100644
--- a/drivers/regulator/tps6586x-regulator.c
+++ b/drivers/regulator/tps6586x-regulator.c
@@ -93,6 +93,8 @@ static const unsigned int tps6586x_ldo4_voltages[] = {
 	2300000, 2325000, 2350000, 2375000, 2400000, 2425000, 2450000, 2475000,
 };
 
+#define tps658623_sm2_voltages tps6586x_ldo4_voltages
+
 static const unsigned int tps6586x_ldo_voltages[] = {
 	1250000, 1500000, 1800000, 2500000, 2700000, 2850000, 3100000, 3300000,
 };
@@ -104,6 +106,13 @@ static const unsigned int tps6586x_sm2_voltages[] = {
 	4200000, 4250000, 4300000, 4350000, 4400000, 4450000, 4500000, 4550000,
 };
 
+static const unsigned int tps658643_sm2_voltages[] = {
+	1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000, 1200000,
+	1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000, 1400000,
+	1425000, 1450000, 1475000, 1500000, 1525000, 1550000, 1575000, 1600000,
+	1625000, 1650000, 1675000, 1700000, 1725000, 1750000, 1775000, 1800000,
+};
+
 static const unsigned int tps6586x_dvm_voltages[] = {
 	 725000,  750000,  775000,  800000,  825000,  850000,  875000,  900000,
 	 925000,  950000,  975000, 1000000, 1025000, 1050000, 1075000, 1100000,
@@ -119,8 +128,8 @@ static const unsigned int tps6586x_dvm_voltages[] = {
 		.ops	= &tps6586x_regulator_ops,			\
 		.type	= REGULATOR_VOLTAGE,				\
 		.id	= TPS6586X_ID_##_id,				\
-		.n_voltages = ARRAY_SIZE(tps6586x_##vdata##_voltages),	\
-		.volt_table = tps6586x_##vdata##_voltages,		\
+		.n_voltages = ARRAY_SIZE(vdata##_voltages),		\
+		.volt_table = vdata##_voltages,				\
 		.owner	= THIS_MODULE,					\
 		.enable_reg = TPS6586X_SUPPLY##ereg0,			\
 		.enable_mask = 1 << (ebit0),				\
@@ -162,27 +171,47 @@ static const unsigned int tps6586x_dvm_voltages[] = {
 
 static struct tps6586x_regulator tps6586x_regulator[] = {
 	TPS6586X_SYS_REGULATOR(),
-	TPS6586X_LDO(LDO_0, "vinldo01", ldo0, SUPPLYV1, 5, 3, ENC, 0, END, 0),
-	TPS6586X_LDO(LDO_3, "vinldo23", ldo, SUPPLYV4, 0, 3, ENC, 2, END, 2),
-	TPS6586X_LDO(LDO_5, "REG-SYS", ldo, SUPPLYV6, 0, 3, ENE, 6, ENE, 6),
-	TPS6586X_LDO(LDO_6, "vinldo678", ldo, SUPPLYV3, 0, 3, ENC, 4, END, 4),
-	TPS6586X_LDO(LDO_7, "vinldo678", ldo, SUPPLYV3, 3, 3, ENC, 5, END, 5),
-	TPS6586X_LDO(LDO_8, "vinldo678", ldo, SUPPLYV2, 5, 3, ENC, 6, END, 6),
-	TPS6586X_LDO(LDO_9, "vinldo9", ldo, SUPPLYV6, 3, 3, ENE, 7, ENE, 7),
-	TPS6586X_LDO(LDO_RTC, "REG-SYS", ldo, SUPPLYV4, 3, 3, V4, 7, V4, 7),
-	TPS6586X_LDO(LDO_1, "vinldo01", dvm, SUPPLYV1, 0, 5, ENC, 1, END, 1),
-	TPS6586X_LDO(SM_2, "vin-sm2", sm2, SUPPLYV2, 0, 5, ENC, 7, END, 7),
-
-	TPS6586X_DVM(LDO_2, "vinldo23", dvm, LDO2BV1, 0, 5, ENA, 3,
+	TPS6586X_LDO(LDO_0, "vinldo01", tps6586x_ldo0, SUPPLYV1, 5, 3, ENC, 0,
+					END, 0),
+	TPS6586X_LDO(LDO_3, "vinldo23", tps6586x_ldo, SUPPLYV4, 0, 3, ENC, 2,
+					END, 2),
+	TPS6586X_LDO(LDO_5, "REG-SYS", tps6586x_ldo, SUPPLYV6, 0, 3, ENE, 6,
+					ENE, 6),
+	TPS6586X_LDO(LDO_6, "vinldo678", tps6586x_ldo, SUPPLYV3, 0, 3, ENC, 4,
+					END, 4),
+	TPS6586X_LDO(LDO_7, "vinldo678", tps6586x_ldo, SUPPLYV3, 3, 3, ENC, 5,
+					END, 5),
+	TPS6586X_LDO(LDO_8, "vinldo678", tps6586x_ldo, SUPPLYV2, 5, 3, ENC, 6,
+					END, 6),
+	TPS6586X_LDO(LDO_9, "vinldo9", tps6586x_ldo, SUPPLYV6, 3, 3, ENE, 7,
+					ENE, 7),
+	TPS6586X_LDO(LDO_RTC, "REG-SYS", tps6586x_ldo, SUPPLYV4, 3, 3, V4, 7,
+					V4, 7),
+	TPS6586X_LDO(LDO_1, "vinldo01", tps6586x_dvm, SUPPLYV1, 0, 5, ENC, 1,
+					END, 1),
+	TPS6586X_LDO(SM_2, "vin-sm2", tps6586x_sm2, SUPPLYV2, 0, 5, ENC, 7,
+					END, 7),
+
+	TPS6586X_DVM(LDO_2, "vinldo23", tps6586x_dvm, LDO2BV1, 0, 5, ENA, 3,
 					ENB, 3, TPS6586X_VCC2, BIT(6)),
-	TPS6586X_DVM(LDO_4, "vinldo4", ldo4, LDO4V1, 0, 5, ENC, 3,
+	TPS6586X_DVM(LDO_4, "vinldo4", tps6586x_ldo4, LDO4V1, 0, 5, ENC, 3,
 					END, 3, TPS6586X_VCC1, BIT(6)),
-	TPS6586X_DVM(SM_0, "vin-sm0", dvm, SM0V1, 0, 5, ENA, 1,
+	TPS6586X_DVM(SM_0, "vin-sm0", tps6586x_dvm, SM0V1, 0, 5, ENA, 1,
 					ENB, 1, TPS6586X_VCC1, BIT(2)),
-	TPS6586X_DVM(SM_1, "vin-sm1", dvm, SM1V1, 0, 5, ENA, 0,
+	TPS6586X_DVM(SM_1, "vin-sm1", tps6586x_dvm, SM1V1, 0, 5, ENA, 0,
 					ENB, 0, TPS6586X_VCC1, BIT(0)),
 };
 
+static struct tps6586x_regulator tps658623_regulator[] = {
+	TPS6586X_LDO(SM_2, "vin-sm2", tps658623_sm2, SUPPLYV2, 0, 5, ENC, 7,
+					END, 7),
+};
+
+static struct tps6586x_regulator tps658643_regulator[] = {
+	TPS6586X_LDO(SM_2, "vin-sm2", tps658643_sm2, SUPPLYV2, 0, 5, ENC, 7,
+					END, 7),
+};
+
 /*
  * TPS6586X has 2 enable bits that are OR'ed to determine the actual
  * regulator state. Clearing one of this bits allows switching
@@ -254,11 +283,33 @@ static int tps6586x_regulator_set_slew_rate(struct platform_device *pdev,
 			setting->slew_rate & TPS6586X_SLEW_RATE_MASK);
 }
 
-static inline struct tps6586x_regulator *find_regulator_info(int id)
+static struct tps6586x_regulator *find_regulator_info(int id, int version)
 {
 	struct tps6586x_regulator *ri;
+	struct tps6586x_regulator *table = NULL;
+	int num;
 	int i;
 
+	switch (version) {
+	case TPS658623:
+		table = tps658623_regulator;
+		num = ARRAY_SIZE(tps658623_regulator);
+		break;
+	case TPS658643:
+		table = tps658643_regulator;
+		num = ARRAY_SIZE(tps658643_regulator);
+		break;
+	}
+
+	/* Search version specific table first */
+	if (table) {
+		for (i = 0; i < num; i++) {
+			ri = &table[i];
+			if (ri->desc.id == id)
+				return ri;
+		}
+	}
+
 	for (i = 0; i < ARRAY_SIZE(tps6586x_regulator); i++) {
 		ri = &tps6586x_regulator[i];
 		if (ri->desc.id == id)
@@ -351,6 +402,7 @@ static int tps6586x_regulator_probe(struct platform_device *pdev)
 	struct regulator_init_data *reg_data;
 	struct tps6586x_platform_data *pdata;
 	struct of_regulator_match *tps6586x_reg_matches = NULL;
+	int version;
 	int id;
 	int err;
 
@@ -373,10 +425,13 @@ static int tps6586x_regulator_probe(struct platform_device *pdev)
 		return -ENOMEM;
 	}
 
+	version = tps6586x_get_version(pdev->dev.parent);
+
 	for (id = 0; id < TPS6586X_ID_MAX_REGULATOR; ++id) {
 		reg_data = pdata->reg_init_data[id];
 
-		ri = find_regulator_info(id);
+		ri = find_regulator_info(id, version);
+
 		if (!ri) {
 			dev_err(&pdev->dev, "invalid regulator ID specified\n");
 			return -EINVAL;