[PATCH v3 2/2] dt-bindings: iio: humidity: Add TI HDC302x support

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From: Li peiyu <579lpy@xxxxxxxxx>

Add device tree bindings for HDC3020/HDC3021/HDC3022 humidity and
temperature sensors.

Signed-off-by: Li peiyu <579lpy@xxxxxxxxx>
---
changes for v3:
- Use a fallback compatible
changes for v2:
- change the maintainers to me.
- hdc3020,hdc3021,hdc3022 are compatible,I've changed the dirver.
- change the node name to humidity-sensor.

 .../bindings/iio/humidity/ti,hdc3020.yaml     | 63 +++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/humidity/ti,hdc3020.yaml

diff --git a/Documentation/devicetree/bindings/iio/humidity/ti,hdc3020.yaml b/Documentation/devicetree/bindings/iio/humidity/ti,hdc3020.yaml
new file mode 100644
index 000000000000..08080bb9cd75
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/humidity/ti,hdc3020.yaml
@@ -0,0 +1,63 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/humidity/ti,hdc3020.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: HDC3020/HDC3021/HDC3022 humidity and temperature iio sensors
+
+maintainers:
+  - Li peiyu <579lpy@xxxxxxxxx>
+
+description:
+  https://www.ti.com/lit/ds/symlink/hdc3020.pdf
+
+  The HDC302x is an integrated capacitive based relative humidity (RH)
+  and temperature sensor.
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - enum:
+              - ti,hdc3021
+              - ti,hdc3022
+          - const: ti,hdc3020
+      - items:
+          - const: ti,hdc3020
+
+  interrupts:
+    maxItems: 1
+
+  vdd-supply: true
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        humidity-sensor@47 {
+            compatible = "ti,hdc3020";
+            reg = <0x47>;
+        };
+    };
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        humidity-sensor@47 {
+            compatible = "ti,hdc3021", "ti,hdc3020";
+            reg = <0x47>;
+        };
+    };
-- 
2.34.1





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