[PATCH v2 1/2] dt-bindings: iio: light: add ltr390

[Anshul Dalal <anshulusr@gmail.com>]

Add binding for Lite-On LTR390 which is an Ambient/UV light sensor that
communicates over i2c with an address of 0x53.

Datasheet:
  https://optoelectronics.liteon.com/upload/download/DS86-2015-0004/LTR-390UV_Final_%20DS_V1%201.pdf

Signed-off-by: Anshul Dalal <anshulusr@gmail.com>
---

Changes for v2:
- Added missing properties in the example
---
 .../bindings/iio/light/liteon,ltr390.yaml     | 56 +++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/light/liteon,ltr390.yaml

diff --git a/Documentation/devicetree/bindings/iio/light/liteon,ltr390.yaml b/Documentation/devicetree/bindings/iio/light/liteon,ltr390.yaml
new file mode 100644
index 000000000000..5d98ef2af74d
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/light/liteon,ltr390.yaml
@@ -0,0 +1,56 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/light/liteon,ltr390.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Lite-On LTR390 ALS and UV Sensor
+
+description: |
+  The Lite-On LTR390 is an ALS (Ambient Light Sensor) and a UV sensor in a
+  single package with i2c address of 0x53.
+
+  Datasheet:
+    https://optoelectronics.liteon.com/upload/download/DS86-2015-0004/LTR-390UV_Final_%20DS_V1%201.pdf
+
+maintainers:
+  - Anshul Dalal <anshulusr@gmail.com>
+
+properties:
+  compatible:
+    enum:
+      - liteon,ltr390
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+    description: |
+      Level interrupt pin with open drain output.
+      The sensor pulls this pin low when the measured reading is greater than
+      some configured threshold.
+
+  vdd-supply: true
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        light-sensor@53 {
+            compatible = "liteon,ltr390";
+            reg = <0x53>;
+            interrupts = <18 IRQ_TYPE_EDGE_FALLING>;
+            vdd-supply = <&vdd_regulator>;
+        };
+    };
-- 
2.42.1