[PATCH v1 1/2] dt-bindings: gpio: ds4520: Add ADI DS4520

[Okan Sahin <okan.sahin@analog.com>]

Add ADI DS4520 devicetree document.

Signed-off-by: Okan Sahin <okan.sahin@analog.com>
---
 .../bindings/gpio/adi,ds4520-gpio.yaml        | 45 +++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/gpio/adi,ds4520-gpio.yaml

diff --git a/Documentation/devicetree/bindings/gpio/adi,ds4520-gpio.yaml b/Documentation/devicetree/bindings/gpio/adi,ds4520-gpio.yaml
new file mode 100644
index 000000000000..69f90e59d415
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/adi,ds4520-gpio.yaml
@@ -0,0 +1,45 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/gpio/adi,ds4520-gpio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: DS4520 I2C GPIO expander
+
+maintainers:
+  - Okan Sahin <okan.sahin@analog.com>
+
+properties:
+  compatible:
+    enum:
+      - adi,ds4520
+
+  reg:
+    maxItems: 1
+
+  gpio-controller: true
+
+  '#gpio-cells':
+    const: 2
+
+required:
+  - compatible
+  - reg
+  - gpio-controller
+  - "#gpio-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c0 {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        ds4520: gpio@50 {
+            compatible = "adi,ds4520-gpio";
+            reg = <0x50>;
+            gpio-controller;
+            #gpio-cells = <2>;
+        };
+    };
-- 
2.30.2