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diff --git a/Documentation/devicetree/bindings/iio/adc/mcp320x.txt b/Documentation/devicetree/bindings/iio/adc/mcp320x.txt
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+* Microchip Analog to Digital Converter (ADC)
+
+The node for this driver must be a child node of a SPI controller, hence
+all mandatory properties described in
+
+        Documentation/devicetree/bindings/spi/spi-bus.txt
+
+must be specified.
+
+Required properties:
+        - compatible:   Must be one of the following, depending on the
+                        model:
+                                "mcp3001"
+                                "mcp3002"
+                                "mcp3004"
+                                "mcp3008"
+                                "mcp3201"
+                                "mcp3202"
+                                "mcp3204"
+                                "mcp3208"
+
+
+Examples:
+spi_controller {
+        mcp3x0x@0 {
+                compatible = "mcp3002";
+                reg = <0>;
+                spi-max-frequency = <1000000>;
+        };
+};