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The mpu9250 is a SIP containing an mpu6500 and an ak8975. If this was all there was too it there would be no need for explicit handling in the driver. Arguably the bindings would also only reflect the presence of an mpu6500 with the ak8975 hanging off it, as the kernel doesn't care that they are in one package. However, the WHOAMI value changes as well so best to add explicit support. Signed-off-by: Jonathan Cameron <jic23@kernel.org>
54 lines
1.5 KiB
Plaintext
54 lines
1.5 KiB
Plaintext
InvenSense MPU-6050 Six-Axis (Gyro + Accelerometer) MEMS MotionTracking Device
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http://www.invensense.com/mems/gyro/mpu6050.html
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Required properties:
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- compatible : should be one of
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"invensense,mpu6050"
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"invensense,mpu6500"
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"invensense,mpu9150"
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"invensense,mpu9250"
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"invensense,icm20608"
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- reg : the I2C address of the sensor
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- interrupt-parent : should be the phandle for the interrupt controller
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- interrupts : interrupt mapping for GPIO IRQ
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Optional properties:
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- mount-matrix: an optional 3x3 mounting rotation matrix
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- i2c-gate node. These devices also support an auxiliary i2c bus. This is
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simple enough to be described using the i2c-gate binding. See
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i2c/i2c-gate.txt for more details.
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Example:
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mpu6050@68 {
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compatible = "invensense,mpu6050";
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reg = <0x68>;
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interrupt-parent = <&gpio1>;
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interrupts = <18 1>;
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mount-matrix = "-0.984807753012208", /* x0 */
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"0", /* y0 */
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"-0.173648177666930", /* z0 */
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"0", /* x1 */
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"-1", /* y1 */
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"0", /* z1 */
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"-0.173648177666930", /* x2 */
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"0", /* y2 */
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"0.984807753012208"; /* z2 */
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};
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mpu9250@68 {
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compatible = "invensense,mpu9250";
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reg = <0x68>;
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interrupt-parent = <&gpio3>;
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interrupts = <21 1>;
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i2c-gate {
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#address-cells = <1>;
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#size-cells = <0>;
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ax8975@c {
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compatible = "ak,ak8975";
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reg = <0x0c>;
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};
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};
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};
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