1 * Bosch BMC150 magnetometer sensor
3 http://ae-bst.resource.bosch.com/media/products/dokumente/bmc150/BST-BMC150-DS000-04.pdf
7 - compatible : should be "bosch,bmc150_magn"
8 - reg : the I2C address of the magnetometer
12 - interrupt-parent : phandle to the parent interrupt controller
13 - interrupts : interrupt mapping for GPIO IRQ
18 compatible = "bosch,bmc150_magn";
20 interrupt-parent = <&gpio1>;