109a642b7SGe GaoWhat: /sys/bus/iio/devices/iio:deviceX/in_gyro_matrix 209a642b7SGe GaoWhat: /sys/bus/iio/devices/iio:deviceX/in_accel_matrix 309a642b7SGe GaoWhat: /sys/bus/iio/devices/iio:deviceX/in_magn_matrix 409a642b7SGe GaoKernelVersion: 3.4.0 509a642b7SGe GaoContact: linux-iio@vger.kernel.org 609a642b7SGe GaoDescription: 709a642b7SGe Gao This is mounting matrix for motion sensors. Mounting matrix 809a642b7SGe Gao is a 3x3 unitary matrix. A typical mounting matrix would look like 909a642b7SGe Gao [0, 1, 0; 1, 0, 0; 0, 0, -1]. Using this information, it would be 1009a642b7SGe Gao easy to tell the relative positions among sensors as well as their 1109a642b7SGe Gao positions relative to the board that holds these sensors. Identity matrix 1209a642b7SGe Gao [1, 0, 0; 0, 1, 0; 0, 0, 1] means sensor chip and device are perfectly 1309a642b7SGe Gao aligned with each other. All axes are exactly the same. 14