On Sun, Jan 22, 2017 at 4:22 AM, Jonathan Cameron <jic23@xxxxxxxxxx> wrote: > 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? Generally you'd set this value based on the hardware application it is being used for.. namely if you had a plastic case or wristband that is affecting the signal.. >> + >> +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>; >> +}; >> > > -- > To unsubscribe from this list: send the line "unsubscribe linux-iio" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
