Add ADI MAX77503 regulator driver and bindings

index 965d4f0c18a6..f3ec24691378 100644
@@ -564,6 +564,16 @@ config REGULATOR_MAX5970
 	  The MAX5970/5978 is a smart switch with no output regulation, but
 	  fault protection and voltage and current monitoring capabilities.
 
+config REGULATOR_MAX77503
+	tristate "Analog Devices MAX77503 Regulator"
+	depends on I2C
+	select REGMAP_I2C
+	help
+	  This driver controls a Analog Devices MAX77503 14V input, 1.5A
+	  high-efficiency buck converter via I2C bus.
+	  Say M here if you want to include support for the regulator as a
+	  module.
+
 config REGULATOR_MAX77541
 	tristate "Analog Devices MAX77541/77540 Regulator"
 	depends on MFD_MAX77541

index 23074714a81a..b2b059b5ee56 100644
@@ -69,6 +69,7 @@ obj-$(CONFIG_REGULATOR_LTC3676) += ltc3676.o
 obj-$(CONFIG_REGULATOR_MAX14577) += max14577-regulator.o
 obj-$(CONFIG_REGULATOR_MAX1586) += max1586.o
 obj-$(CONFIG_REGULATOR_MAX5970) += max5970-regulator.o
+obj-$(CONFIG_REGULATOR_MAX77503) += max77503-regulator.o
 obj-$(CONFIG_REGULATOR_MAX77541) += max77541-regulator.o
 obj-$(CONFIG_REGULATOR_MAX77620) += max77620-regulator.o
 obj-$(CONFIG_REGULATOR_MAX77650) += max77650-regulator.o

new file mode 100644
index 000000000000..aa581e550be2
@@ -0,0 +1,50 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright (c) 2023 Analog Devices, Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/regulator/adi,max77503-regulator.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices MAX77503 Buck Converter
+
+maintainers:
+  - Gokhan Celik <[email protected]>
+
+description: |
+  The Analog Devices MAX77503 is a single channel 14V input, 1.5A
+  high-efficiency buck converter. This converter has 94% efficiency
+  for 2-Cell/3-Cell battery applications.
+
+allOf:
+  - $ref: regulator.yaml#
+
+properties:
+  compatible:
+    enum:
+      - adi,max77503
+
+  reg:
+    description: I2C address of the device
+    items:
+      - enum: [0x1e, 0x24, 0x37]
+
+required:
+  - compatible
+  - reg
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        regulator@1e {
+            compatible = "adi,max77503";
+            reg = <0x1e>;
+
+            regulator-min-microvolt = <800000>;
+            regulator-max-microvolt = <5000000>;
+        };
+    };