dt-bindings: iio: adc: add ad4080

Add devicetree bindings for ad4080 family.

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Link: https://patch.msgid.link/20250516082630.8236-9-antoniu.miclaus@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Documentation/devicetree/bindings/iio/adc/adi,ad4080.yaml

@@ -0,0 +1,96 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright 2025 Analog Devices Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/adi,ad4080.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices AD4080 20-Bit, 40 MSPS, Differential SAR ADC
+
+maintainers:
+  - Antoniu Miclaus <antoniu.miclaus@analog.com>
+
+description: |
+  The AD4080 is a high speed, low noise, low distortion, 20-bit, Easy Drive,
+  successive approximation register (SAR) analog-to-digital converter (ADC).
+  Maintaining high performance (signal-to-noise and distortion (SINAD) ratio
+  > 90 dBFS) at signal frequencies in excess of 1 MHz enables the AD4080 to
+  service a wide variety of precision, wide bandwidth data acquisition
+  applications.
+
+  https://www.analog.com/media/en/technical-documentation/data-sheets/ad4080.pdf
+
+$ref: /schemas/spi/spi-peripheral-props.yaml#
+
+properties:
+  compatible:
+    enum:
+      - adi,ad4080
+
+  reg:
+    maxItems: 1
+
+  spi-max-frequency:
+    description: Configuration of the SPI bus.
+    maximum: 50000000
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: cnv
+
+  vdd33-supply: true
+
+  vdd11-supply: true
+
+  vddldo-supply: true
+
+  iovdd-supply: true
+
+  vrefin-supply: true
+
+  io-backends:
+    maxItems: 1
+
+  adi,lvds-cnv-enable:
+    description: Enable the LVDS signal type on the CNV pin. Default is CMOS.
+    type: boolean
+
+  adi,num-lanes:
+    description:
+      Number of lanes on which the data is sent on the output (DA, DB pins).
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [1, 2]
+    default: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - vdd33-supply
+  - vrefin-supply
+
+additionalProperties: false
+
+examples:
+  - |
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        adc@0 {
+          compatible = "adi,ad4080";
+          reg = <0>;
+          spi-max-frequency = <10000000>;
+          vdd33-supply = <&vdd33>;
+          vddldo-supply = <&vddldo>;
+          vrefin-supply = <&vrefin>;
+          clocks = <&cnv>;
+          clock-names = "cnv";
+          io-backends = <&iio_backend>;
+        };
+    };
+...

MAINTAINERS

@@ -1375,6 +1375,13 @@ F:	Documentation/devicetree/bindings/iio/adc/adi,ad4030.yaml
 F:	Documentation/iio/ad4030.rst
 F:	drivers/iio/adc/ad4030.c
 
+ANALOG DEVICES INC AD4080 DRIVER
+M:	Antoniu Miclaus <antoniu.miclaus@analog.com>
+L:	linux-iio@vger.kernel.org
+S:	Supported
+W:	https://ez.analog.com/linux-software-drivers
+F:	Documentation/devicetree/bindings/iio/adc/adi,ad4080.yaml
+
 ANALOG DEVICES INC AD4130 DRIVER
 M:	Cosmin Tanislav <cosmin.tanislav@analog.com>
 L:	linux-iio@vger.kernel.org