This is a note to let you know that I've just added the patch titled
iio: pressure: bmp280: Fix waiting time for BMP3xx configuration
to the 6.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
iio-pressure-bmp280-fix-waiting-time-for-bmp3xx-conf.patch
and it can be found in the queue-6.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit b5392254600c54ba6fb9b2ac11d293d98caae452
Author: Vasileios Amoiridis <vassilisamir@xxxxxxxxx>
Date: Thu Jul 11 23:15:50 2024 +0200
iio: pressure: bmp280: Fix waiting time for BMP3xx configuration
[ Upstream commit 262a6634bcc4f0c1c53d13aa89882909f281a6aa ]
According to the datasheet, both pressure and temperature can go up to
oversampling x32. With this option, the maximum measurement time is not
80ms (this is for press x32 and temp x2), but it is 130ms nominal
(calculated from table 3.9.2) and since most of the maximum values
are around +15%, it is configured to 150ms.
Fixes: 8d329309184d ("iio: pressure: bmp280: Add support for BMP380 sensor family")
Signed-off-by: Vasileios Amoiridis <vassilisamir@xxxxxxxxx>
Link: https://patch.msgid.link/20240711211558.106327-3-vassilisamir@xxxxxxxxx
Cc: <Stable@xxxxxxxxxxxxxxx>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/iio/pressure/bmp280-core.c b/drivers/iio/pressure/bmp280-core.c
index 55ea708489b66..1549f361a473f 100644
--- a/drivers/iio/pressure/bmp280-core.c
+++ b/drivers/iio/pressure/bmp280-core.c
@@ -1204,10 +1204,11 @@ static int bmp380_chip_config(struct bmp280_data *data)
}
/*
* Waits for measurement before checking configuration error
- * flag. Selected longest measure time indicated in
- * section 3.9.1 in the datasheet.
+ * flag. Selected longest measurement time, calculated from
+ * formula in datasheet section 3.9.2 with an offset of ~+15%
+ * as it seen as well in table 3.9.1.
*/
- msleep(80);
+ msleep(150);
/* Check config error flag */
ret = regmap_read(data->regmap, BMP380_REG_ERROR, &tmp);
