diff options
Diffstat (limited to 'drivers/iio/imu')
| -rw-r--r-- | drivers/iio/imu/inv_mpu6050/inv_mpu_core.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c index 43fba5f7532b..f9c0624505a2 100644 --- a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c +++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c @@ -798,7 +798,14 @@ static const struct iio_chan_spec inv_mpu_channels[] = { INV_MPU6050_CHAN(IIO_ACCEL, IIO_MOD_Z, INV_MPU6050_SCAN_ACCL_Z), }; -/* constant IIO attribute */ +/* + * The user can choose any frequency between INV_MPU6050_MIN_FIFO_RATE and + * INV_MPU6050_MAX_FIFO_RATE, but only these frequencies are matched by the + * low-pass filter. Specifically, each of these sampling rates are about twice + * the bandwidth of a corresponding low-pass filter, which should eliminate + * aliasing following the Nyquist principle. By picking a frequency different + * from these, the user risks aliasing effects. + */ static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("10 20 50 100 200 500"); static IIO_CONST_ATTR(in_anglvel_scale_available, "0.000133090 0.000266181 0.000532362 0.001064724"); |