[PATCH v11 1/2] dt-bindings: iio: health: add adi,max86150
From: Md Shofiqul Islam <hidden>
Date: 2026-09-13 10:48:10
Also in:
linux-iio, lkml
Subsystem:
analog devices inc iio drivers, iio subsystem and drivers, open firmware and flattened device tree bindings, the rest · Maintainers:
Nuno Sá, Michael Hennerich, Jonathan Cameron, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Add the Device Tree binding schema for the Analog Devices MAX86150 integrated biosensor, which combines two photoplethysmography (PPG) channels (Red LED and IR LED) and one electrocardiogram (ECG) channel in a single I2C device. The device requires four independent supply rails per the datasheet power tree: digital core (vdd), analog core (avdd), ECG reference (vref), and LED anode (leds). Assisted-by: Claude:claude-sonnet-5 Signed-off-by: Md Shofiqul Islam <redacted> --- .../bindings/iio/health/adi,max86150.yaml | 77 +++++++++++++++++++ MAINTAINERS | 6 ++ 2 files changed, 83 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/health/adi,max86150.yaml
diff --git a/Documentation/devicetree/bindings/iio/health/adi,max86150.yaml b/Documentation/devicetree/bindings/iio/health/adi,max86150.yaml
new file mode 100644
index 000000000000..8392d08edd1b
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/health/adi,max86150.yaml@@ -0,0 +1,77 @@ +# 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 <shofiqtest@gmail.com> + +description: | + The MAX86150 is an integrated biosensor SoC that combines: + - Two PPG (photoplethysmography) channels: Red LED and IR LED, + for heart rate and blood-oxygen saturation (SpO2) measurement. + - One ECG (electrocardiogram) channel for biopotential recording. + + The device communicates over I2C at up to 400 kHz. + + 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: + Active-low interrupt line, asserted when the 32-entry hardware + FIFO reaches its configurable almost-full threshold, or when a + new PPG sample is ready. + + vdd-supply: + description: Digital core power supply (1.8 V). + + avdd-supply: + description: Analog core power supply (1.8 V). + + vref-supply: + description: ECG reference voltage supply. + + leds-supply: + description: LED anode supply, typically 3.3 V. + +required: + - compatible + - reg + - vdd-supply + - avdd-supply + - vref-supply + - leds-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>; + avdd-supply = <&vdd_1v8>; + vref-supply = <&vdd_1v8>; + leds-supply = <&vdd_3v3>; + }; + };
diff --git a/MAINTAINERS b/MAINTAINERS
index 3115538ce829..189385966de8 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS@@ -15705,6 +15705,12 @@ S: Orphan F: Documentation/hwmon/max6650.rst F: drivers/hwmon/max6650.c +MAX86150 ECG AND PPG BIOSENSOR DRIVER +M: Md Shofiqul Islam <shofiqtest@gmail.com> +L: linux-iio@vger.kernel.org +S: Maintained +F: Documentation/devicetree/bindings/iio/health/adi,max86150.yaml + MAX9286 QUAD GMSL DESERIALIZER DRIVER M: Jacopo Mondi <jacopo+renesas@jmondi.org> M: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
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2.55.0