Add support for Silicon Mitus SM5703 MFD

new file mode 100644
index 000000000000..560df4c020ca
@@ -0,0 +1,48 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/regulator/siliconmitus,sm5703-regulator.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Silicon Mitus SM5703 multi function device regulators
+
+maintainers:
+  - Markuss Broks <[email protected]>
+
+description: |
+  SM5703 regulators node should be a sub node of the SM5703 MFD node. See SM5703 MFD
+  bindings at Documentation/devicetree/bindings/mfd/siliconmitus,sm5703.yaml
+  Regulator nodes should be named as USBLDO_<number>, BUCK, VBUS, LDO_<number>.
+  The definition for each of these nodes is defined using the standard
+  binding for regulators at Documentation/devicetree/bindings/regulator/regulator.txt.
+
+properties:
+  compatible:
+    const: siliconmitus,sm5703-regulator
+
+  buck:
+    type: object
+    $ref: regulator.yaml#
+    description:
+      Properties for the BUCK regulator.
+
+  vbus:
+    type: object
+    $ref: regulator.yaml#
+    description:
+      Properties for the VBUS regulator.
+
+patternProperties:
+  "^ldo[1-3]$":
+    type: object
+    $ref: regulator.yaml#
+    description:
+      Properties for single LDO regulator.
+
+  "^usbldo[1-2]$":
+    type: object
+    $ref: regulator.yaml#
+    description:
+      Properties for a single USBLDO regulator.
+
+additionalProperties: false

new file mode 100644
index 000000000000..6665409bd541
@@ -0,0 +1,96 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/siliconmitus,sm5703.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Silicon Mitus SM5703 multi-function device bindings
+
+maintainers:
+  - Markuss Broks <[email protected]>
+
+description: |
+  Silicon Mitus SM5703 is a multi-function device, that consists of several
+  modules, designed for a mobile phone use. It consists of
+  LDO, Buck, USBLDO and VBUS regulators, a flash LED driver, a MUIC unit,
+  a fuel gauge and a battery charger circuit. The MUIC and Fuel-Gauge units
+  are separate from the main MFD, having their own i2c lines, while the
+  LED driver, regulators and charger are sharing the main i2c bus of the MFD.
+
+properties:
+  compatible:
+    const: siliconmitus,sm5703-mfd
+
+  reg:
+    description:
+      I2C slave address.
+    maxItems: 1
+
+  regulators:
+    $ref: ../regulator/siliconmitus,sm5703-regulator.yaml
+    description:
+      List of child nodes that specify the regulators.
+
+  reset-gpio:
+    description:
+      GPIO which is connected to the MRSTB pin.
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - regulators
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      mfd@49 {
+        compatible = "siliconmitus,sm5703-mfd";
+        reg = <0x49>;
+
+        reset-gpio = <&msmgpio 24 GPIO_ACTIVE_HIGH>;
+        pinctrl-0 = <&mrstb_default>;
+
+        regulator {
+          compatible = "siliconmitus,sm5703-regulator";
+
+          regulators {
+            sm5703_ldo1: ldo1 {
+              regulator-min-microvolt = <2800000>;
+              regulator-max-microvolt = <2800000>;
+            };
+
+            sm5703_ldo2: ldo2 {
+              regulator-min-microvolt = <1500000>;
+              regulator-max-microvolt = <3300000>;
+            };
+
+            sm5703_ldo3: ldo3 {
+              regulator-min-microvolt = <3300000>;
+              regulator-max-microvolt = <3300000>;
+            };
+
+            sm5703_usbldo1: usbldo1 {
+              regulator-min-microvolt = <4800000>;
+              regulator-max-microvolt = <4800000>;
+            };
+
+            sm5703_usbldo2: usbldo2 {
+              regulator-min-microvolt = <4800000>;
+              regulator-max-microvolt = <4800000>;
+            };
+
+            sm5703_vbus: vbus {
+              regulator-min-microvolt = <5000000>;
+              regulator-max-microvolt = <5000000>;
+            };
+          };
+        };
+      };
+    };
+...

index 2a83ac6bfa4d..d3eef171eb8c 100644
@@ -17886,6 +17886,14 @@ T:	git git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev
 F:	include/linux/srcu*.h
 F:	kernel/rcu/srcu*.c
 
+SM5703 MFD DRIVER
+M:	Markuss Broks <[email protected]>
+S:	Maintained
+F:	Documentation/devicetree/bindings/mfd/siliconmitus,sm5703.yaml
+F:	Documentation/devicetree/bindings/regulator/siliconmitus,sm5703-regulator.yaml
+F:	drivers/mfd/sm5703.c
+F:	drivers/regulator/sm5703-regulator.c
+
 SMACK SECURITY MODULE
 M:	Casey Schaufler <[email protected]>
 L:	[email protected]

index e0d2fcb10a0c..e553a8db24c2 100644
@@ -1223,6 +1223,18 @@ config MFD_SM501
 	  interface. The device may be connected by PCI or local bus with
 	  varying functions enabled.
 
+config MFD_SM5703
+	tristate "Silicon Mitus SM5703 MFD"
+	depends on I2C
+	select MFD_CORE
+	select REGMAP_I2C
+	help
+	  This is the core driver for the Silicon Mitus SM5703 multi-function
+	  device. This device is meant to be used in phones and it has numerous
+	  modules, including LED controller, regulators, fuel gauge, MUIC and
+	  charger circuit. It also support muxing a serial interface over USB
+	  data lines.
+
 config MFD_SM501_GPIO
 	bool "Export GPIO via GPIO layer"
 	depends on MFD_SM501 && GPIOLIB

index df1ecc4a4c95..3278069d3461 100644
@@ -275,3 +275,4 @@ rsmu-i2c-objs			:= rsmu_core.o rsmu_i2c.o
 rsmu-spi-objs			:= rsmu_core.o rsmu_spi.o
 obj-$(CONFIG_MFD_RSMU_I2C)	+= rsmu-i2c.o
 obj-$(CONFIG_MFD_RSMU_SPI)	+= rsmu-spi.o
+obj-$(CONFIG_MFD_SM5703)	+= sm5703.o

index 5d0a360d7244..318bbdc27ae4 100644
@@ -1147,6 +1147,13 @@ config REGULATOR_SLG51000
 	  The SLG51000 is seven compact and customizable low dropout
 	  regulators.
 
+config REGULATOR_SM5703
+	tristate "Silicon Mitus SM5703 regulators"
+	depends on SM5703_MFD
+	help
+	  This driver provides support for voltage regulators of SM5703
+	  multi-function device.
+
 config REGULATOR_STM32_BOOSTER
 	tristate "STMicroelectronics STM32 BOOSTER"
 	depends on ARCH_STM32 || COMPILE_TEST

index 4b8794a73e17..c491fe528ba4 100644
@@ -137,6 +137,7 @@ 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-$(CONFIG_REGULATOR_SM5703) += sm5703-regulator.o
 obj-$(CONFIG_REGULATOR_STM32_BOOSTER) += stm32-booster.o
 obj-$(CONFIG_REGULATOR_STM32_VREFBUF) += stm32-vrefbuf.o
 obj-$(CONFIG_REGULATOR_STM32_PWR) += stm32-pwr.o