diff options
| -rw-r--r-- | drivers/iio/adc/ad7192.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/iio/adc/ad7192.c b/drivers/iio/adc/ad7192.c index 8b1664f6b102..ba27614c89b4 100644 --- a/drivers/iio/adc/ad7192.c +++ b/drivers/iio/adc/ad7192.c @@ -576,7 +576,12 @@ static int ad7192_setup(struct iio_dev *indio_dev, struct device *dev) ret = ad_sd_reset(&st->sd); if (ret < 0) return ret; - usleep_range(500, 1000); /* Wait for at least 500us */ + + /* + * Per AD7192 datasheet (Rev. A, page 34, RESET section), allow + * 500 us after a reset before accessing on-chip registers. + */ + fsleep(500); /* write/read test for device presence */ ret = ad_sd_read_reg(&st->sd, AD7192_REG_ID, 1, &id); |