Re: [PATCH 1/2] devicetree: add documentation for MAX30102 oximeter
From: Jonathan Cameron <hidden>
Date: 2017-01-22 12:22:57
Also in:
linux-iio
On 20/01/17 05:40, Matt Ranostay wrote:
quoted hunk
Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Signed-off-by: Matt Ranostay <redacted> --- .../devicetree/bindings/iio/health/max30102.txt | 30 ++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/health/max30102.txtdiff --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?
quoted hunk
+ +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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