[PATCH v4 2/2] dt-bindings:iio:amplifiers: add ad7293 doc

[Antoniu Miclaus <antoniu.miclaus@analog.com>]

Add device tree bindings for the AD7293 Power Amplifier.

Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
---
changes in v4:
 - set `avdd-supply: true`
 - set `maxItems` for reset-gpios
 .../bindings/iio/dac/adi,ad7293.yaml          | 63 +++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/dac/adi,ad7293.yaml

diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad7293.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad7293.yaml
new file mode 100644
index 000000000000..7951ffe8805b
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/dac/adi,ad7293.yaml
@@ -0,0 +1,63 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/dac/adi,ad7293.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: AD7293 12-Bit Power Amplifier Current Controller with ADC,
+       DACs, Temperature and Current Sensors
+
+maintainers:
+  - Antoniu Miclaus <antoniu.miclaus@analog.com>
+
+description: |
+   Power Amplifier drain current controller containing functionality
+   for general-purpose monitoring and control of current, voltage,
+   and temperature, integrated into a single chip solution with an
+   SPI-compatible interface.
+
+   https://www.analog.com/en/products/ad7293.html
+
+properties:
+  compatible:
+    enum:
+      - adi,ad7293
+
+  avdd-supply: true
+
+  vdrive-supply:
+    description:
+      VDRIVE voltage regulator.
+
+  reset-gpios:
+    maxItems: 1
+
+  reg:
+    maxItems: 1
+
+  spi-max-frequency:
+    maximum: 1000000
+
+required:
+  - compatible
+  - reg
+  - avdd-supply
+  - vdrive-supply
+
+additionalProperties: false
+
+examples:
+  - |
+    spi {
+      #address-cells = <1>;
+      #size-cells = <0>;
+      ad7293@0 {
+        compatible = "adi,ad7293";
+        reg = <0>;
+        spi-max-frequency = <1000000>;
+        avdd-supply = <&avdd>;
+        vdrive-supply = <&vdrive>;
+        reset-gpios = <&gpio 10 0>;
+      };
+    };
+...
-- 
2.34.0