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* AsahiKASEI AK8975 magnetometer sensor
Required properties:
- compatible : should be "asahi-kasei,ak8975"
- reg : the I2C address of the magnetometer
Optional properties:
- gpios : should be device tree identifier of the magnetometer DRDY pin
- vdd-supply: an optional regulator that needs to be on to provide VDD
- mount-matrix: an optional 3x3 mounting rotation matrix
Example:
ak8975@0c {
compatible = "asahi-kasei,ak8975";
reg = <0x0c>;
gpios = <&gpj0 7 0>;
vdd-supply = <&ldo_3v3_gnss>;
mount-matrix = "-0.984807753012208", /* x0 */
"0", /* y0 */
"-0.173648177666930", /* z0 */
"0", /* x1 */
"-1", /* y1 */
"0", /* z1 */
"-0.173648177666930", /* x2 */
"0", /* y2 */
"0.984807753012208"; /* z2 */
};