iio: imu: inv_icm42600: fix timestamping by limiting FIFO reading

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Timestamps are made by measuring the chip clock using the watermark
interrupts. If we read more than watermark samples as done today, we
are reducing the period between interrupts and distort the time
measurement. Fix that by reading only watermark samples in the
interrupt case.

Fixes: 7f85e42a6c ("iio: imu: inv_icm42600: add buffer support in iio devices")
Cc: stable@vger.kernel.org
Signed-off-by: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@tdk.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

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Jean-Baptiste Maneyrol 2026-06-29 21:51:55 +02:00 • committed by Jonathan Cameron

parent aede83625f

commit affe3f077d

2 changed files with 6 additions and 4 deletions

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9

drivers/iio/imu/inv_icm42600/inv_icm42600_buffer.c

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1

drivers/iio/imu/inv_icm42600/inv_icm42600_buffer.h

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