linux/Documentation/devicetree/bindings/iio/humidity/dht11.txt

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* DHT11 humidity/temperature sensor (and compatibles like DHT22)
Required properties:
- compatible: Should be "dht11"
- gpios: Should specify the GPIO connected to the sensor's data
line, see "gpios property" in
Documentation/devicetree/bindings/gpio/gpio.txt.
Example:
humidity_sensor {
compatible = "dht11";
gpios = <&gpio0 6 0>;
}