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diff --git a/Bindings/hwmon/microchip,mcp3021.yaml b/Bindings/hwmon/microchip,mcp3021.yaml
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+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/hwmon/microchip,mcp3021.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Microchip MCP3021 A/D converter
+
+maintainers:
+ - Krzysztof Kozlowski <krzk@kernel.org>
+
+properties:
+ compatible:
+ enum:
+ - microchip,mcp3021
+ - microchip,mcp3221
+
+ reg:
+ maxItems: 1
+
+ reference-voltage-microvolt:
+ description:
+ VDD supply power and reference voltage
+
+required:
+ - compatible
+ - reg
+
+additionalProperties: false
+
+examples:
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ adc@4d {
+ compatible = "microchip,mcp3021";
+ reg = <0x4d>;
+
+ reference-voltage-microvolt = <4500000>; /* 4.5 V */
+ };
+ };