[PATCH v3 1/3] dt-bindings: iio: adc: add a7779 doc

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Add dt bindings for adc ad7779.

Signed-off-by: Ramona Alexandra Nechita <ramona.nechita@xxxxxxxxxx>
---
 .../bindings/iio/adc/adi,ad7779.yaml          | 84 +++++++++++++++++++
 1 file changed, 84 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad7779.yaml

diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7779.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7779.yaml
new file mode 100644
index 000000000000..f1eec656acec
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7779.yaml
@@ -0,0 +1,84 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/adi,ad7779.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices AD777X family 8-Channel, 24-Bit, Simultaneous Sampling ADCs
+
+maintainers:
+  - Ramona Nechita <ramona.nechita@xxxxxxxxxx>
+
+description: |
+  The AD777X family consist of 8-channel, simultaneous sampling analog-to-
+  digital converter (ADC). Eight full Σ-Δ ADCs are on-chip. The
+  AD7771 provides an ultralow input current to allow direct sensor
+  connection. Each input channel has a programmable gain stage
+  allowing gains of 1, 2, 4, and 8 to map lower amplitude sensor
+  outputs into the full-scale ADC input range, maximizing the
+  dynamic range of the signal chain.
+
+  https://www.analog.com/media/en/technical-documentation/data-sheets/ad7770.pdf
+  https://www.analog.com/media/en/technical-documentation/data-sheets/ad7771.pdf
+  https://www.analog.com/media/en/technical-documentation/data-sheets/ad7779.pdf
+
+$ref: /schemas/spi/spi-peripheral-props.yaml#
+
+properties:
+  compatible:
+    enum:
+      - adi,ad7770
+      - adi,ad7771
+      - adi,ad7779
+
+  reg:
+    maxItems: 1
+
+  '#address-cells':
+    const: 1
+
+  '#size-cells':
+    const: 0
+
+  clocks:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  vref-supply:
+    description:
+      ADC reference voltage supply
+
+  start-gpios:
+    description:
+      Pin that controls start synchronization pulse.
+    maxItems: 1
+
+  reset-gpios:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+
+unevaluatedProperties: false
+
+examples:
+- |
+  #include <dt-bindings/gpio/gpio.h>
+  spi {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      adc@0 {
+        compatible = "adi,ad7779";
+        reg = <0>;
+        vref-supply = <&vref>;
+        start-gpios = <&gpio0 87 GPIO_ACTIVE_LOW>;
+        reset-gpios = <&gpio0 93 GPIO_ACTIVE_LOW>;
+        clocks = <&adc_clk>;
+      };
+  };
+...
-- 
2.43.0





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