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

* 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>;
}