Add device tree binding documentation for the Analog Devices
MAX30210 temperature sensor.
Signed-off-by: John Erasmus Mari Geronimo <johnerasmusmari.geronimo@analog.com>
---
.../iio/temperature/adi,max30210.yaml | 71 +++++++++++++++++++
1 file changed, 71 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iio/temperature/adi,max30210.yaml
diff --git a/Documentation/devicetree/bindings/iio/temperature/adi,max30210.yaml b/Documentation/devicetree/bindings/iio/temperature/adi,max30210.yaml
new file mode 100644
index 000000000000..80aeae23e0a5
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/temperature/adi,max30210.yaml
@@ -0,0 +1,71 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright 2026 Analog Devices Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/temperature/adi,max30210.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices MAX30210 Low-Power I2C Digital Temperature Sensor
+
+maintainers:
+ - John Erasmus Mari Geronimo <johnerasmusmari.geronimo@analog.com>
+
+description: |
+ The MAX30210 operates from 1.7V to 2.0V supply voltage, and is a low-power,
+ high-accuracy digital temperature sensor with ±0.1°C accuracy from +20°C to
+ +50°C and ±0.15°C accuracy from -20°C to +85°C.
+ https://www.analog.com/media/en/technical-documentation/data-sheets/max30210.pdf
+
+properties:
+ compatible:
+ enum:
+ - adi,max30210
+
+ reg:
+ maxItems: 1
+
+ vdd-supply:
+ description: |
+ Analog Supply Voltage Input. Must have values in the interval (1.7V; 5.5V)
+ in order for the device to function correctly.
+
+ powerdown-gpios:
+ description: |
+ GPIO spec for CVT/PDB pin. Should be configured with GPIO_ACTIVE_LOW.
+ maxItems: 1
+
+ interrupts:
+ description: |
+ Connected to INT pin. Should be configured with type IRQ_TYPE_EDGE_BOTH.
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - vdd-supply
+ - powerdown-gpios
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/pwm/pwm.h>
+
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ temperature-sensor@40 {
+ compatible = "adi,max30210";
+ reg = <0x40>;
+ vdd-supply = <&vdd>;
+ powerdown-gpios = <&gpio 12 GPIO_ACTIVE_LOW>;
+
+ interrupt-parent = <&gpio>;
+ interrupts = <17 IRQ_TYPE_EDGE_BOTH>;
+ };
+ };
+...
--
2.34.1
On Fri, Feb 27, 2026 at 12:30:40AM +0800, John Erasmus Mari Geronimo wrote:
> +
> +maintainers:
> + - John Erasmus Mari Geronimo <johnerasmusmari.geronimo@analog.com>
> +
> +description: |
> + The MAX30210 operates from 1.7V to 2.0V supply voltage, and is a low-power,
> + high-accuracy digital temperature sensor with ±0.1°C accuracy from +20°C to
> + +50°C and ±0.15°C accuracy from -20°C to +85°C.
> + https://www.analog.com/media/en/technical-documentation/data-sheets/max30210.pdf
> +
> +properties:
> + compatible:
> + enum:
> + - adi,max30210
> +
> + reg:
> + maxItems: 1
> +
> + vdd-supply:
> + description: |
Do not need '|' unless you need to preserve formatting. Same in other
places.
> + Analog Supply Voltage Input. Must have values in the interval (1.7V; 5.5V)
> + in order for the device to function correctly.
> +
> + powerdown-gpios:
> + description: |
> + GPIO spec for CVT/PDB pin. Should be configured with GPIO_ACTIVE_LOW.
Should be configured depending on wiring, because the flag includes any
inverters. Just say it is active low,
> + maxItems: 1
> +
> + interrupts:
> + description: |
> + Connected to INT pin. Should be configured with type IRQ_TYPE_EDGE_BOTH.
No, just say it is interrupt triggered by raising and falling edges.
> + maxItems: 1
> +
> +required:
> + - compatible
> + - reg
> + - vdd-supply
> + - powerdown-gpios
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/interrupt-controller/irq.h>
> + #include <dt-bindings/gpio/gpio.h>
> + #include <dt-bindings/pwm/pwm.h>
Where do you use this header?
> +
> + i2c {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + status = "okay";
Drop.
> +
> + temperature-sensor@40 {
> + compatible = "adi,max30210";
> + reg = <0x40>;
> + vdd-supply = <&vdd>;
> + powerdown-gpios = <&gpio 12 GPIO_ACTIVE_LOW>;
> +
> + interrupt-parent = <&gpio>;
> + interrupts = <17 IRQ_TYPE_EDGE_BOTH>;
> + };
> + };
> +...
> --
> 2.34.1
>
When there is more than one patch in a series, please include a cover letter.
On 2/26/26 10:30 AM, John Erasmus Mari Geronimo wrote:
> Add device tree binding documentation for the Analog Devices
> MAX30210 temperature sensor.
>
> Signed-off-by: John Erasmus Mari Geronimo <johnerasmusmari.geronimo@analog.com>
> ---
> .../iio/temperature/adi,max30210.yaml | 71 +++++++++++++++++++
> 1 file changed, 71 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/iio/temperature/adi,max30210.yaml
>
> diff --git a/Documentation/devicetree/bindings/iio/temperature/adi,max30210.yaml b/Documentation/devicetree/bindings/iio/temperature/adi,max30210.yaml
> new file mode 100644
> index 000000000000..80aeae23e0a5
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/temperature/adi,max30210.yaml
> @@ -0,0 +1,71 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +# Copyright 2026 Analog Devices Inc.
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/temperature/adi,max30210.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Analog Devices MAX30210 Low-Power I2C Digital Temperature Sensor
> +
> +maintainers:
> + - John Erasmus Mari Geronimo <johnerasmusmari.geronimo@analog.com>
> +
> +description: |
> + The MAX30210 operates from 1.7V to 2.0V supply voltage, and is a low-power,
This voltage range doesn't match the one below.
We don't really need all of the tech specs here anyway, we have the link
to the datasheet.
> + high-accuracy digital temperature sensor with ±0.1°C accuracy from +20°C to
> + +50°C and ±0.15°C accuracy from -20°C to +85°C.
> + https://www.analog.com/media/en/technical-documentation/data-sheets/max30210.pdf
> +
> +properties:
> + compatible:
> + enum:
> + - adi,max30210
> +
> + reg:
> + maxItems: 1
> +
> + vdd-supply:
> + description: |
"|" is not needed here or below. It is only needed to preserve formatting or if
the text contains ":".
> + Analog Supply Voltage Input. Must have values in the interval (1.7V; 5.5V)
> + in order for the device to function correctly.
> +
> + powerdown-gpios:
> + description: |
> + GPIO spec for CVT/PDB pin. Should be configured with GPIO_ACTIVE_LOW.
> + maxItems: 1
> +
> + interrupts:
> + description: |
> + Connected to INT pin. Should be configured with type IRQ_TYPE_EDGE_BOTH.
> + maxItems: 1
> +
> +required:
> + - compatible
> + - reg
> + - vdd-supply
> + - powerdown-gpios
Is this pin really required? Seems like it would still work with this pin
hard-wired by using autonomous mode.
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/interrupt-controller/irq.h>
> + #include <dt-bindings/gpio/gpio.h>
> + #include <dt-bindings/pwm/pwm.h>
pwm is unused.
> +
> + i2c {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + status = "okay";
> +
> + temperature-sensor@40 {
> + compatible = "adi,max30210";
> + reg = <0x40>;
> + vdd-supply = <&vdd>;
> + powerdown-gpios = <&gpio 12 GPIO_ACTIVE_LOW>;
> +
> + interrupt-parent = <&gpio>;
> + interrupts = <17 IRQ_TYPE_EDGE_BOTH>;
> + };
> + };
> +...
On Thu, 26 Feb 2026 12:33:38 -0600 David Lechner <dlechner@baylibre.com> wrote: > When there is more than one patch in a series, please include a cover letter. Looks like different patches got different CC lists. For a small series like this just +CC the same folk on all emails including the cover letter that David didn't get Thanks, Jonathan
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