sysfs-bus-iio-mpu6050

 1What:           /sys/bus/iio/devices/iio:deviceX/in_gyro_matrix
 2What:           /sys/bus/iio/devices/iio:deviceX/in_accel_matrix
 3What:           /sys/bus/iio/devices/iio:deviceX/in_magn_matrix
 4KernelVersion:  3.4.0
 5Contact:        linux-iio@vger.kernel.org
 6Description:
 7		This is mounting matrix for motion sensors. Mounting matrix
 8		is a 3x3 unitary matrix. A typical mounting matrix would look like
 9		[0, 1, 0; 1, 0, 0; 0, 0, -1]. Using this information, it would be
10		easy to tell the relative positions among sensors as well as their
11		positions relative to the board that holds these sensors. Identity matrix
12		[1, 0, 0; 0, 1, 0; 0, 0, 1] means sensor chip and device are perfectly
13		aligned with each other. All axes are exactly the same.