Re: [PATCH 1/2] devicetree: add documentation for MAX30102 oximeter

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On 20/01/17 05:40, Matt Ranostay wrote:
> Cc: devicetree@xxxxxxxxxxxxxxx
> Signed-off-by: Matt Ranostay <matt@ranostay.consulting>
> ---
>  .../devicetree/bindings/iio/health/max30102.txt    | 30 ++++++++++++++++++++++
>  1 file changed, 30 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/health/max30102.txt
> 
> diff --git a/Documentation/devicetree/bindings/iio/health/max30102.txt b/Documentation/devicetree/bindings/iio/health/max30102.txt
> new file mode 100644
> index 000000000000..c93d1bb25597
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/health/max30102.txt
> @@ -0,0 +1,30 @@
> +Maxim MAX30102 heart rate and pulse oximeter sensor
> +
> +* https://datasheets.maximintegrated.com/en/ds/MAX30102.pdf
> +
> +Required properties:
> +  - compatible: must be "maxim,max30102"
> +  - reg: the I2C address of the sensor
> +  - interrupt-parent: should be the phandle for the interrupt controller
> +  - interrupts: the sole interrupt generated by the device
> +
> +  Refer to interrupt-controller/interrupts.txt for generic
> +  interrupt client node bindings.
> +
> +Optional properties:
> +  - maxim,red-led-current-microamp: configuration for RED LED current
> +  - maxim,ir-led-current-microamp: configuration for IR LED current
> +
> +    Note that each step is approximately 200 microamps, ranging from 0 uA to
> +    50800 uA.
Are these due to the hardware present, or are we looking at something that should
be controllable from userspace?
> +
> +Example:
> +
> +max30100@57 {
> +	compatible = "maxim,max30102";
> +	reg = <57>;
> +	maxim,red-led-current-microamp = <7000>;
> +	maxim,ir-led-current-microamp = <7000>;
> +	interrupt-parent = <&gpio1>;
> +	interrupts = <16 2>;
> +};
> 

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