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iio: imu: inv_icm42600: fix timestamp clock period by using lower value

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Clock period value is used for computing periods of sampling. There is
no need for it to be higher than the maximum odr, otherwise we are
losing precision in the computation for nothing.

Switch clock period value to maximum odr period (8kHz).

Fixes: 0ecc363cce ("iio: make invensense timestamp module generic")
Cc: stable@vger.kernel.org
Signed-off-by: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@tdk.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Jean-Baptiste Maneyrol
2026-06-23 16:22:15 +02:00
committed by Jonathan Cameron
parent aa411adc6c
commit 8b0b864c11
2 changed files with 4 additions and 4 deletions
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4
drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c
View File

@@ -1170,10 +1170,10 @@ struct iio_dev *inv_icm42600_accel_init(struct inv_icm42600_state *st)
accel_st->filter = INV_ICM42600_FILTER_AVG_16X;
/*
* clock period is 32kHz (31250ns)
* clock period is 8kHz (125000ns)
* jitter is +/- 2% (20 per mille)
*/
ts_chip.clock_period = 31250;
ts_chip.clock_period = 125000;
ts_chip.jitter = 20;
ts_chip.init_period = inv_icm42600_odr_to_period(st->conf.accel.odr);
inv_sensors_timestamp_init(&accel_st->ts, &ts_chip);

4
drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c
View File

@@ -755,10 +755,10 @@ struct iio_dev *inv_icm42600_gyro_init(struct inv_icm42600_state *st)
}
/*
* clock period is 32kHz (31250ns)
* clock period is 8kHz (125000ns)
* jitter is +/- 2% (20 per mille)
*/
ts_chip.clock_period = 31250;
ts_chip.clock_period = 125000;
ts_chip.jitter = 20;
ts_chip.init_period = inv_icm42600_odr_to_period(st->conf.accel.odr);
inv_sensors_timestamp_init(&gyro_st->ts, &ts_chip);