Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 28 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/iio/health/max30100.txt b/Documentation/devicetree/bindings/iio/health/max30100.txt
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index 000000000..0054908a6
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+++ b/Documentation/devicetree/bindings/iio/health/max30100.txt
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+Maxim MAX30100 heart rate and pulse oximeter sensor
+
+* https://datasheets.maximintegrated.com/en/ds/MAX30100.pdf
+
+Required properties:
+  - compatible: must be "maxim,max30100"
+  - reg: the I2C address of the sensor
+  - interrupts: the sole interrupt generated by the device
+
+  Refer to interrupt-controller/interrupts.txt for generic
+  interrupt client node bindings.
+
+Optional properties:
+  - maxim,led-current-microamp: configuration for LED current in microamperes
+    while the engine is running. First indexed value is the configuration for
+    the RED LED, and second value is for the IR LED.
+
+    Refer to the datasheet for the allowed current values.
+
+Example:
+
+max30100@57 {
+	compatible = "maxim,max30100";
+	reg = <0x57>;
+	maxim,led-current-microamp = <24000 50000>;
+	interrupt-parent = <&gpio1>;
+	interrupts = <16 2>;
+};