Re: [PATCH v5 1/2] dt-bindings: iio: adc: add maxim,max40080

[David Lechner <dlechner@baylibre.com>]

On 7/23/26 1:50 AM, Stefan Popa wrote:
> Add device tree bindings for the Maxim MAX40080 bidirectional
> current-sense amplifier with a 12-bit ADC and an I2C/SMBus interface.
> 
> Signed-off-by: Stefan Popa <stefan.popa@analog.com>
> ---
>  .../bindings/iio/adc/maxim,max40080.yaml      | 56 +++++++++++++++++++
>  1 file changed, 56 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/adc/maxim,max40080.yaml
> 
> diff --git a/Documentation/devicetree/bindings/iio/adc/maxim,max40080.yaml b/Documentation/devicetree/bindings/iio/adc/maxim,max40080.yaml
> new file mode 100644
> index 0000000000000..170bf4eff8706
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/adc/maxim,max40080.yaml
> @@ -0,0 +1,56 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/adc/maxim,max40080.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Maxim MAX40080 bidirectional current-sense amplifier
> +
> +maintainers:
> +  - Ciprian Hegbeli <ciprian.hegbeli@analog.com>
> +  - Stefan Popa <stefan.popa@analog.com>
> +
> +description: |
> +  The MAX40080 is a high-precision, bidirectional current-sense amplifier with
> +  an integrated 12-bit ADC and an I2C/SMBus interface. It measures the voltage
> +  across an external shunt resistor and the input bus voltage, and stores the
> +  results in an internal FIFO.
> +
> +  Datasheet:
> +    https://www.analog.com/en/products/max40080.html
> +
> +properties:
> +  compatible:
> +    const: maxim,max40080

adi, (the part is owned by ADI now)

> +
> +  reg:
> +    maxItems: 1
> +
> +  "#io-channel-cells":
> +    const: 1
> +
> +  shunt-resistor-micro-ohms:
> +    description:
> +      Value of the current-sense shunt resistor connected between the IN+ and
> +      IN- inputs. Used to scale the reported current.
> +

Missing vdd-supply for power and interrupts for ALERT_ output.

> +required:
> +  - compatible
> +  - reg
> +  - shunt-resistor-micro-ohms
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    i2c {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        adc@20 {
> +            compatible = "maxim,max40080";
> +            reg = <0x20>;
> +            #io-channel-cells = <1>;
> +            shunt-resistor-micro-ohms = <100000>;
> +        };
> +    };