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* patch "iio: accel: adxl372: Perform a reset at start up" added to staging-linus
@ 2019-10-10  9:20 gregkh
  0 siblings, 0 replies; only message in thread
From: gregkh @ 2019-10-10  9:20 UTC (permalink / raw)
  To: stefan.popa, Jonathan.Cameron, Stable

This is a note to let you know that I've just added the patch titled

    iio: accel: adxl372: Perform a reset at start up

to my staging git tree which can be found at
in the staging-linus branch.

The patch will show up in the next release of the linux-next tree
(usually sometime within the next 24 hours during the week.)

The patch will hopefully also be merged in Linus's tree for the
next -rc kernel release.

If you have any questions about this process, please let me know.

From d9a997bd4d762d5bd8cc548d762902f58b5e0a74 Mon Sep 17 00:00:00 2001
From: Stefan Popa <>
Date: Tue, 10 Sep 2019 17:44:46 +0300
Subject: iio: accel: adxl372: Perform a reset at start up

We need to perform a reset a start up to make sure that the chip is in a
consistent state. This reset also disables all the interrupts which
should only be enabled together with the iio buffer. Not doing this, was
sometimes causing unwanted interrupts to trigger.

Signed-off-by: Stefan Popa <>
Fixes: f4f55ce38e5f ("iio:adxl372: Add FIFO and interrupts support")
Cc: <>
Signed-off-by: Jonathan Cameron <>
 drivers/iio/accel/adxl372.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/iio/accel/adxl372.c b/drivers/iio/accel/adxl372.c
index fbad4b45fe42..67b8817995c0 100644
--- a/drivers/iio/accel/adxl372.c
+++ b/drivers/iio/accel/adxl372.c
@@ -575,6 +575,14 @@ static int adxl372_setup(struct adxl372_state *st)
 		return -ENODEV;
+	/*
+	 * Perform a software reset to make sure the device is in a consistent
+	 * state after start up.
+	 */
+	ret = regmap_write(st->regmap, ADXL372_RESET, ADXL372_RESET_CODE);
+	if (ret < 0)
+		return ret;
 	ret = adxl372_set_op_mode(st, ADXL372_STANDBY);
 	if (ret < 0)
 		return ret;

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2019-10-10  9:20 patch "iio: accel: adxl372: Perform a reset at start up" added to staging-linus gregkh

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