Add device tree binding documentation for the Analog Devices
AD5706R 4-channel 16-bit current output digital-to-analog converter.

Signed-off-by: Alexis Czezar Torreno <alexisczezar.torreno@analog.com>

---
Changes since v1:
  - Removed clocks, clock-names, pwms, pwm-names, gpio properties
  - Simplified example to use plain SPI bus
---
---
 .../devicetree/bindings/iio/dac/adi,ad5706r.yaml   | 48 ++++++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad5706r.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad5706r.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..cd5d7741562f79eefc9aba5629b8ad14490fa181
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/dac/adi,ad5706r.yaml
@@ -0,0 +1,48 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/dac/adi,ad5706r.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices AD5706R 4-Channel Current Output DAC
+
+maintainers:
+  - Alexis Czezar Torreno <alexisczezar.torreno@analog.com>
+
+description: |
+  The AD5706R is a 16-bit, 4-channel current output digital-to-analog
+  converter with SPI interface.
+
+  Datasheet:
+    https://www.analog.com/en/products/ad5706r.html
+
+properties:
+  compatible:
+    enum:
+      - adi,ad5706r
+
+  reg:
+    maxItems: 1
+
+  spi-max-frequency:
+    maximum: 50000000
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        dac@0 {
+            compatible = "adi,ad5706r";
+            reg = <0>;
+            spi-max-frequency = <50000000>;
+        };
+    };
+...

-- 
2.34.1