dt-bindings: iio: health: add adi,max86150

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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/health/adi,max86150.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices MAX86150 ECG and PPG Biosensor
+
+maintainers:
+  - Md Shofiqul Islam <[email protected]>
+
+description: |
+  The MAX86150 is an integrated biosensor that combines two
+  photoplethysmography (PPG) channels (Red LED and IR LED) and one
+  electrocardiogram (ECG) channel for biopotential recording. Samples
+  are buffered in a 32-entry hardware FIFO with a configurable
+  almost-full interrupt.
+
+  Datasheet:
+    https://www.analog.com/media/en/technical-documentation/data-sheets/MAX86150.pdf
+
+properties:
+  compatible:
+    const: adi,max86150
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+    description:
+      Interrupt line, asserted when the FIFO almost-full threshold is
+      reached.
+
+  vdd-supply:
+    description: VDD power supply (1.8 V).
+
+  vled-supply:
+    description: VLED LED anode supply (3.3 V to 5 V).
+
+required:
+  - compatible
+  - reg
+  - vdd-supply
+  - vled-supply
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        heart-rate@5e {
+            compatible = "adi,max86150";
+            reg = <0x5e>;
+            interrupt-parent = <&gpio1>;
+            interrupts = <5 IRQ_TYPE_LEVEL_LOW>;
+            vdd-supply = <&vdd_1v8>;
+            vled-supply = <&vdd_3v3>;
+        };
+    };