According to datasheet, ad7616 require at least 15ms after a restart to fully reconfigure and being able to receive new commands via spi. Signed-off-by: Beniamin Bia <beniamin.bia@xxxxxxxxxx> Acked-by: Jonathan Cameron <jic23@xxxxxxxxxx> --- Changes in v2: -nothing changed drivers/iio/adc/ad7606.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/iio/adc/ad7606.c b/drivers/iio/adc/ad7606.c index 9eec3db01a17..a6034cf7238a 100644 --- a/drivers/iio/adc/ad7606.c +++ b/drivers/iio/adc/ad7606.c @@ -594,6 +594,10 @@ int ad7606_probe(struct device *dev, int irq, void __iomem *base_address, if (ret) dev_warn(st->dev, "failed to RESET: no RESET GPIO specified\n"); + /* AD7616 requires al least 15ms to reconfigure after a reset */ + if (msleep_interruptible(15)) + return -ERESTARTSYS; + st->write_scale = ad7606_write_scale_hw; st->write_os = ad7606_write_os_hw; -- 2.17.1
