diff --git a/arch/arm/mach-ux500/board-mop500-regulators.c b/arch/arm/mach-ux500/board-mop500-regulators.c
index 967e4ac..76f5f4c 100644
--- a/arch/arm/mach-ux500/board-mop500-regulators.c
+++ b/arch/arm/mach-ux500/board-mop500-regulators.c
@@ -332,6 +332,7 @@ static struct ab8500_regulator_reg_init ab8500_reg_init[] = {
 static struct regulator_init_data ab8500_regulators[AB8500_NUM_REGULATORS] = {
 	/* supplies to the display/camera */
 	[AB8500_LDO_AUX1] = {
+		.supply_regulator = "ab8500-ext-supply3",
 		.constraints = {
 			.name = "V-DISPLAY",
 			.min_uV = 2500000,
@@ -352,6 +353,7 @@ static struct regulator_init_data ab8500_regulators[AB8500_NUM_REGULATORS] = {
 	},
 	/* supplies to the on-board eMMC */
 	[AB8500_LDO_AUX2] = {
+		.supply_regulator = "ab8500-ext-supply3",
 		.constraints = {
 			.name = "V-eMMC1",
 			.min_uV = 1100000,
@@ -364,6 +366,7 @@ static struct regulator_init_data ab8500_regulators[AB8500_NUM_REGULATORS] = {
 	},
 	/* supply for VAUX3, supplies to SDcard slots */
 	[AB8500_LDO_AUX3] = {
+		.supply_regulator = "ab8500-ext-supply3",
 		.constraints = {
 			.name = "V-MMC-SD",
 			.min_uV = 1100000,
@@ -439,9 +442,36 @@ static struct regulator_init_data ab8500_regulators[AB8500_NUM_REGULATORS] = {
 	},
 };
 
+/* supply for VextSupply3 */
+static struct regulator_consumer_supply ab8500_ext_supply3_consumers[] = {
+	/* SIM supply for 3 V SIM cards */
+	REGULATOR_SUPPLY("vinvsim", "sim-detect.0"),
+};
+
+/*
+ * AB8500 external regulators
+ */
+static struct regulator_init_data ab8500_ext_regulators[] = {
+	/* fixed Vbat supplies VSMPS3_EXT_3V4 and VSMPS4_EXT_3V4 */
+	[AB8500_EXT_SUPPLY3] = {
+		.constraints = {
+			.name = "ab8500-ext-supply3",
+			.min_uV = 3400000,
+			.max_uV = 3400000,
+			.valid_ops_mask = REGULATOR_CHANGE_STATUS,
+			.boot_on = 1,
+		},
+		.num_consumer_supplies =
+			ARRAY_SIZE(ab8500_ext_supply3_consumers),
+		.consumer_supplies = ab8500_ext_supply3_consumers,
+	},
+};
+
 struct ab8500_regulator_platform_data ab8500_regulator_plat_data = {
 	.reg_init               = ab8500_reg_init,
 	.num_reg_init           = ARRAY_SIZE(ab8500_reg_init),
 	.regulator              = ab8500_regulators,
 	.num_regulator          = ARRAY_SIZE(ab8500_regulators),
+	.ext_regulator          = ab8500_ext_regulators,
+	.num_ext_regulator      = ARRAY_SIZE(ab8500_ext_regulators),
 };
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 551a22b..fdbc0f0 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -332,6 +332,14 @@ config REGULATOR_AB8500
 	  This driver supports the regulators found on the ST-Ericsson mixed
 	  signal AB8500 PMIC
 
+config REGULATOR_AB8500_EXT
+	bool "ST-Ericsson AB8500 External Regulators"
+	depends on REGULATOR_AB8500
+	default y if REGULATOR_AB8500
+	help
+	  This driver supports the external regulator controls found on the
+	  ST-Ericsson mixed signal AB8500 PMIC
+
 config REGULATOR_DBX500_PRCMU
 	bool
 
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index b802b0c..be541cf 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -13,6 +13,7 @@ obj-$(CONFIG_REGULATOR_88PM8607) += 88pm8607.o
 obj-$(CONFIG_REGULATOR_AAT2870) += aat2870-regulator.o
 obj-$(CONFIG_REGULATOR_AB3100) += ab3100.o
 obj-$(CONFIG_REGULATOR_AB8500)	+= ab8500.o
+obj-$(CONFIG_REGULATOR_AB8500_EXT) += ab8500-ext.o
 obj-$(CONFIG_REGULATOR_AD5398) += ad5398.o
 obj-$(CONFIG_REGULATOR_ANATOP) += anatop-regulator.o
 obj-$(CONFIG_REGULATOR_ARIZONA) += arizona-micsupp.o arizona-ldo1.o
diff --git a/drivers/regulator/ab8500-ext.c b/drivers/regulator/ab8500-ext.c
new file mode 100644
index 0000000..ffcb96e
--- /dev/null
+++ b/drivers/regulator/ab8500-ext.c
@@ -0,0 +1,293 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2010
+ *
+ * License Terms: GNU General Public License v2
+ *
+ * Authors: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
+ *
+ * This file is based on drivers/regulator/ab8500.c
+ *
+ * AB8500 external regulators
+ *
+ * ab8500-ext supports the following regulators:
+ * - VextSupply3
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/err.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/mfd/abx500.h>
+#include <linux/mfd/abx500/ab8500.h>
+#include <linux/regulator/ab8500.h>
+
+/**
+ * struct ab8500_ext_regulator_info - ab8500 regulator information
+ * @dev: device pointer
+ * @desc: regulator description
+ * @regulator_dev: regulator device
+ * @is_enabled: status of regulator (on/off)
+ * @fixed_uV: typical voltage (for fixed voltage supplies)
+ * @update_bank: bank to control on/off
+ * @update_reg: register to control on/off
+ * @update_mask: mask to enable/disable and set mode of regulator
+ * @update_val: bits holding the regulator current mode
+ * @update_val_en: bits to set EN pin active (LPn pin deactive)
+ *                 normally this means high power mode
+ * @update_val_en_lp: bits to set EN pin active and LPn pin active
+ *                    normally this means low power mode
+ * @delay: startup delay in ms
+ */
+struct ab8500_ext_regulator_info {
+	struct device *dev;
+	struct regulator_desc desc;
+	struct regulator_dev *regulator;
+	bool is_enabled;
+	int fixed_uV;
+	u8 update_bank;
+	u8 update_reg;
+	u8 update_mask;
+	u8 update_val;
+	u8 update_val_en;
+	u8 update_val_en_lp;
+};
+
+static int ab8500_ext_regulator_enable(struct regulator_dev *rdev)
+{
+	int ret;
+	struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev);
+
+	if (info == NULL) {
+		dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
+		return -EINVAL;
+	}
+
+	ret = abx500_mask_and_set_register_interruptible(info->dev,
+		info->update_bank, info->update_reg,
+		info->update_mask, info->update_val);
+	if (ret < 0)
+		dev_err(rdev_get_dev(rdev),
+			"couldn't set enable bits for regulator\n");
+
+	info->is_enabled = true;
+
+	dev_dbg(rdev_get_dev(rdev), "%s-enable (bank, reg, mask, value):"
+		" 0x%02x, 0x%02x, 0x%02x, 0x%02x\n",
+		info->desc.name, info->update_bank, info->update_reg,
+		info->update_mask, info->update_val);
+
+	return ret;
+}
+
+static int ab8500_ext_regulator_disable(struct regulator_dev *rdev)
+{
+	int ret;
+	struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev);
+
+	if (info == NULL) {
+		dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
+		return -EINVAL;
+	}
+
+	ret = abx500_mask_and_set_register_interruptible(info->dev,
+		info->update_bank, info->update_reg,
+		info->update_mask, 0x0);
+	if (ret < 0)
+		dev_err(rdev_get_dev(rdev),
+			"couldn't set disable bits for regulator\n");
+
+	info->is_enabled = false;
+
+	dev_dbg(rdev_get_dev(rdev), "%s-disable (bank, reg, mask, value):"
+		" 0x%02x, 0x%02x, 0x%02x, 0x%02x\n",
+		info->desc.name, info->update_bank, info->update_reg,
+		info->update_mask, 0x0);
+
+	return ret;
+}
+
+static int ab8500_ext_regulator_is_enabled(struct regulator_dev *rdev)
+{
+	int ret;
+	struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev);
+	u8 regval;
+
+	if (info == NULL) {
+		dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
+		return -EINVAL;
+	}
+
+	ret = abx500_get_register_interruptible(info->dev,
+		info->update_bank, info->update_reg, &regval);
+	if (ret < 0) {
+		dev_err(rdev_get_dev(rdev),
+			"couldn't read 0x%x register\n", info->update_reg);
+		return ret;
+	}
+
+	dev_dbg(rdev_get_dev(rdev), "%s-is_enabled (bank, reg, mask, value):"
+		" 0x%02x, 0x%02x, 0x%02x, 0x%02x\n",
+		info->desc.name, info->update_bank, info->update_reg,
+		info->update_mask, regval);
+
+	if (regval & info->update_mask)
+		info->is_enabled = true;
+	else
+		info->is_enabled = false;
+
+	return info->is_enabled;
+}
+
+static int ab8500_ext_fixed_get_voltage(struct regulator_dev *rdev)
+{
+	struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev);
+
+	if (info == NULL) {
+		dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
+		return -EINVAL;
+	}
+
+	return info->fixed_uV;
+}
+
+static int ab8500_ext_list_voltage(struct regulator_dev *rdev,
+				   unsigned selector)
+{
+	struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev);
+
+	if (info == NULL) {
+		dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
+		return -EINVAL;
+	}
+
+	/* return the uV for the fixed regulators */
+	if (info->fixed_uV)
+		return info->fixed_uV;
+
+	return -EINVAL;
+}
+
+static struct regulator_ops ab8500_ext_regulator_ops = {
+	.enable			= ab8500_ext_regulator_enable,
+	.disable		= ab8500_ext_regulator_disable,
+	.is_enabled		= ab8500_ext_regulator_is_enabled,
+	.get_voltage		= ab8500_ext_fixed_get_voltage,
+	.list_voltage		= ab8500_ext_list_voltage,
+};
+
+
+static struct ab8500_ext_regulator_info
+		ab8500_ext_regulator_info[AB8500_NUM_EXT_REGULATORS] = {
+	[AB8500_EXT_SUPPLY3] = {
+		.desc = {
+			.name		= "VEXTSUPPLY3",
+			.ops		= &ab8500_ext_regulator_ops,
+			.type		= REGULATOR_VOLTAGE,
+			.id		= AB8500_EXT_SUPPLY3,
+			.owner		= THIS_MODULE,
+			.n_voltages	= 1,
+		},
+		.fixed_uV		= 3400000,
+		.update_bank		= 0x04,
+		.update_reg		= 0x08,
+		.update_mask		= 0x30,
+		.update_val		= 0x10,
+		.update_val_en		= 0x10,
+		.update_val_en_lp	= 0x30,
+	},
+};
+
+int ab8500_ext_regulator_init(struct platform_device *pdev)
+{
+	struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent);
+	struct ab8500_platform_data *ppdata;
+	struct ab8500_regulator_platform_data *pdata;
+	int i, err;
+
+	if (!ab8500) {
+		dev_err(&pdev->dev, "null mfd parent\n");
+		return -EINVAL;
+	}
+	ppdata = dev_get_platdata(ab8500->dev);
+	if (!ppdata) {
+		dev_err(&pdev->dev, "null parent pdata\n");
+		return -EINVAL;
+	}
+
+	pdata = ppdata->regulator;
+	if (!pdata) {
+		dev_err(&pdev->dev, "null pdata\n");
+		return -EINVAL;
+	}
+
+	/* make sure the platform data has the correct size */
+	if (pdata->num_ext_regulator != ARRAY_SIZE(ab8500_ext_regulator_info)) {
+		dev_err(&pdev->dev, "Configuration error: size mismatch.\n");
+		return -EINVAL;
+	}
+
+	/* check for AB8500 2.x */
+	if (abx500_get_chip_id(&pdev->dev) < 0x30) {
+		struct ab8500_ext_regulator_info *info;
+
+		/* VextSupply3LPn is inverted on AB8500 2.x */
+		info = &ab8500_ext_regulator_info[AB8500_EXT_SUPPLY3];
+		info->update_val = 0x30;
+		info->update_val_en = 0x30;
+		info->update_val_en_lp = 0x10;
+	}
+
+	/* register all regulators */
+	for (i = 0; i < ARRAY_SIZE(ab8500_ext_regulator_info); i++) {
+		struct ab8500_ext_regulator_info *info = NULL;
+
+		/* assign per-regulator data */
+		info = &ab8500_ext_regulator_info[i];
+		info->dev = &pdev->dev;
+
+		/* register regulator with framework */
+		info->regulator = regulator_register(&info->desc, &pdev->dev,
+				&pdata->ext_regulator[i], info, NULL);
+		if (IS_ERR(info->regulator)) {
+			err = PTR_ERR(info->regulator);
+			dev_err(&pdev->dev, "failed to register regulator %s\n",
+					info->desc.name);
+			/* when we fail, un-register all earlier regulators */
+			while (--i >= 0) {
+				info = &ab8500_ext_regulator_info[i];
+				regulator_unregister(info->regulator);
+			}
+			return err;
+		}
+
+		dev_dbg(rdev_get_dev(info->regulator),
+			"%s-probed\n", info->desc.name);
+	}
+
+	return 0;
+}
+
+int ab8500_ext_regulator_exit(struct platform_device *pdev)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(ab8500_ext_regulator_info); i++) {
+		struct ab8500_ext_regulator_info *info = NULL;
+		info = &ab8500_ext_regulator_info[i];
+
+		dev_vdbg(rdev_get_dev(info->regulator),
+			"%s-remove\n", info->desc.name);
+
+		regulator_unregister(info->regulator);
+	}
+
+	return 0;
+}
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Bengt Jonsson <bengt.g.jonsson@stericsson.com>");
+MODULE_DESCRIPTION("AB8500 external regulator driver");
+MODULE_ALIAS("platform:ab8500-ext-regulator");
diff --git a/drivers/regulator/ab8500.c b/drivers/regulator/ab8500.c
index 3ccb9eb..f36a407 100644
--- a/drivers/regulator/ab8500.c
+++ b/drivers/regulator/ab8500.c
@@ -1034,6 +1034,11 @@ static int ab8500_regulator_probe(struct platform_device *pdev)
 			return err;
 	}
 
+	/* register external regulators (before Vaux1, 2 and 3) */
+	err = ab8500_ext_regulator_init(pdev);
+	if (err)
+		return err;
+
 	/* register all regulators */
 	for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) {
 		err = ab8500_regulator_register(pdev, &pdata->regulator[i], i, NULL);
@@ -1046,7 +1051,7 @@ static int ab8500_regulator_probe(struct platform_device *pdev)
 
 static int ab8500_regulator_remove(struct platform_device *pdev)
 {
-	int i;
+	int i, err;
 
 	for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) {
 		struct ab8500_regulator_info *info = NULL;
@@ -1058,6 +1063,11 @@ static int ab8500_regulator_remove(struct platform_device *pdev)
 		regulator_unregister(info->regulator);
 	}
 
+	/* remove external regulators (after Vaux1, 2 and 3) */
+	err = ab8500_ext_regulator_exit(pdev);
+	if (err)
+		return err;
+
 	return 0;
 }
 
diff --git a/include/linux/regulator/ab8500.h b/include/linux/regulator/ab8500.h
index 3a8e026..63d2c4e 100644
--- a/include/linux/regulator/ab8500.h
+++ b/include/linux/regulator/ab8500.h
@@ -10,6 +10,8 @@
 #ifndef __LINUX_MFD_AB8500_REGULATOR_H
 #define __LINUX_MFD_AB8500_REGULATOR_H
 
+#include <linux/platform_device.h>
+
 /* AB8500 regulators */
 enum ab8500_regulator_id {
 	AB8500_LDO_AUX1,
@@ -152,11 +154,33 @@ enum ab9540_regulator_reg {
 	AB9540_NUM_REGULATOR_REGISTERS,
 };
 
+/* AB8500 external regulators */
+enum ab8500_ext_regulator_id {
+	AB8500_EXT_SUPPLY3,
+	AB8500_NUM_EXT_REGULATORS,
+};
+
 struct ab8500_regulator_platform_data {
 	int num_reg_init;
 	struct ab8500_regulator_reg_init *reg_init;
 	int num_regulator;
 	struct regulator_init_data *regulator;
+	int num_ext_regulator;
+	struct regulator_init_data *ext_regulator;
 };
 
+#ifdef CONFIG_REGULATOR_AB8500_EXT
+int ab8500_ext_regulator_init(struct platform_device *pdev);
+int ab8500_ext_regulator_exit(struct platform_device *pdev);
+#else
+inline int ab8500_ext_regulator_init(struct platform_device *pdev)
+{
+	return 0;
+}
+inline int ab8500_ext_regulator_exit(struct platform_device *pdev)
+{
+	return 0;
+}
+#endif
+
 #endif
