diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 0e7d425..1e590ec 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -839,6 +839,17 @@ config REGULATOR_SLG51000
 	  The SLG51000 is seven compact and customizable low dropout
 	  regulators.
 
+config REGULATOR_STM32_BOOSTER
+	tristate "STMicroelectronics STM32 BOOSTER"
+	depends on ARCH_STM32 || COMPILE_TEST
+	help
+	  This driver supports internal booster (3V3) embedded in some
+	  STMicroelectronics STM32 chips. It can be used to supply ADC analog
+	  input switches when vdda supply is below 2.7V.
+
+	  This driver can also be built as a module. If so, the module
+	  will be called stm32-booster.
+
 config REGULATOR_STM32_VREFBUF
 	tristate "STMicroelectronics STM32 VREFBUF"
 	depends on ARCH_STM32 || COMPILE_TEST
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index c15b0b6..eef73b5 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -105,6 +105,7 @@ obj-$(CONFIG_REGULATOR_S5M8767) += s5m8767.o
 obj-$(CONFIG_REGULATOR_SC2731) += sc2731-regulator.o
 obj-$(CONFIG_REGULATOR_SKY81452) += sky81452-regulator.o
 obj-$(CONFIG_REGULATOR_SLG51000) += slg51000-regulator.o
+obj-$(CONFIG_REGULATOR_STM32_BOOSTER) += stm32-booster.o
 obj-$(CONFIG_REGULATOR_STM32_VREFBUF) += stm32-vrefbuf.o
 obj-$(CONFIG_REGULATOR_STM32_PWR) += stm32-pwr.o
 obj-$(CONFIG_REGULATOR_STPMIC1) += stpmic1_regulator.o
diff --git a/drivers/regulator/stm32-booster.c b/drivers/regulator/stm32-booster.c
new file mode 100644
index 0000000..2a89766
--- /dev/null
+++ b/drivers/regulator/stm32-booster.c
@@ -0,0 +1,132 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) STMicroelectronics 2019
+// Author(s): Fabrice Gasnier <fabrice.gasnier@st.com>.
+
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/of_regulator.h>
+
+/* STM32H7 SYSCFG register */
+#define STM32H7_SYSCFG_PMCR		0x04
+#define STM32H7_SYSCFG_BOOSTE_MASK	BIT(8)
+
+/* STM32MP1 SYSCFG has set and clear registers */
+#define STM32MP1_SYSCFG_PMCSETR		0x04
+#define STM32MP1_SYSCFG_PMCCLRR		0x44
+#define STM32MP1_SYSCFG_EN_BOOSTER_MASK	BIT(8)
+
+static const struct regulator_ops stm32h7_booster_ops = {
+	.list_voltage	= regulator_list_voltage_linear,
+	.enable		= regulator_enable_regmap,
+	.disable	= regulator_disable_regmap,
+	.is_enabled	= regulator_is_enabled_regmap,
+};
+
+static const struct regulator_desc stm32h7_booster_desc = {
+	.name = "booster",
+	.supply_name = "vdda",
+	.n_voltages = 1,
+	.type = REGULATOR_VOLTAGE,
+	.min_uV = 3300000,
+	.fixed_uV = 3300000,
+	.ramp_delay = 66000, /* up to 50us to stabilize */
+	.ops = &stm32h7_booster_ops,
+	.enable_reg = STM32H7_SYSCFG_PMCR,
+	.enable_mask = STM32H7_SYSCFG_BOOSTE_MASK,
+	.owner = THIS_MODULE,
+};
+
+static int stm32mp1_booster_enable(struct regulator_dev *rdev)
+{
+	return regmap_write(rdev->regmap, STM32MP1_SYSCFG_PMCSETR,
+			    STM32MP1_SYSCFG_EN_BOOSTER_MASK);
+}
+
+static int stm32mp1_booster_disable(struct regulator_dev *rdev)
+{
+	return regmap_write(rdev->regmap, STM32MP1_SYSCFG_PMCCLRR,
+			    STM32MP1_SYSCFG_EN_BOOSTER_MASK);
+}
+
+static const struct regulator_ops stm32mp1_booster_ops = {
+	.list_voltage	= regulator_list_voltage_linear,
+	.enable		= stm32mp1_booster_enable,
+	.disable	= stm32mp1_booster_disable,
+	.is_enabled	= regulator_is_enabled_regmap,
+};
+
+static const struct regulator_desc stm32mp1_booster_desc = {
+	.name = "booster",
+	.supply_name = "vdda",
+	.n_voltages = 1,
+	.type = REGULATOR_VOLTAGE,
+	.min_uV = 3300000,
+	.fixed_uV = 3300000,
+	.ramp_delay = 66000,
+	.ops = &stm32mp1_booster_ops,
+	.enable_reg = STM32MP1_SYSCFG_PMCSETR,
+	.enable_mask = STM32MP1_SYSCFG_EN_BOOSTER_MASK,
+	.owner = THIS_MODULE,
+};
+
+static int stm32_booster_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct device_node *np = pdev->dev.of_node;
+	struct regulator_config config = { };
+	const struct regulator_desc *desc;
+	struct regulator_dev *rdev;
+	struct regmap *regmap;
+	int ret;
+
+	regmap = syscon_regmap_lookup_by_phandle(np, "st,syscfg");
+	if (IS_ERR(regmap))
+		return PTR_ERR(regmap);
+
+	desc = (const struct regulator_desc *)
+		of_match_device(dev->driver->of_match_table, dev)->data;
+
+	config.regmap = regmap;
+	config.dev = dev;
+	config.of_node = np;
+	config.init_data = of_get_regulator_init_data(dev, np, desc);
+
+	rdev = devm_regulator_register(dev, desc, &config);
+	if (IS_ERR(rdev)) {
+		ret = PTR_ERR(rdev);
+		dev_err(dev, "register failed with error %d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static const struct of_device_id stm32_booster_of_match[] = {
+	{
+		.compatible = "st,stm32h7-booster",
+		.data = (void *)&stm32h7_booster_desc
+	}, {
+		.compatible = "st,stm32mp1-booster",
+		.data = (void *)&stm32mp1_booster_desc
+	}, {
+	},
+};
+MODULE_DEVICE_TABLE(of, stm32_booster_of_match);
+
+static struct platform_driver stm32_booster_driver = {
+	.probe = stm32_booster_probe,
+	.driver = {
+		.name  = "stm32-booster",
+		.of_match_table = of_match_ptr(stm32_booster_of_match),
+	},
+};
+module_platform_driver(stm32_booster_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Fabrice Gasnier <fabrice.gasnier@st.com>");
+MODULE_DESCRIPTION("STMicroelectronics STM32 booster regulator driver");
+MODULE_ALIAS("platform:stm32-booster");
