[3/5] iio: adc: ad7606: Allow reconfigration after reset
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Message ID 20190703143648.24402-3-beniamin.bia@analog.com
State New
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Series
  • [1/5] iio: adc: ad7606: Move common channel definition to header
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Commit Message

Beniamin Bia July 3, 2019, 2:36 p.m. UTC
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@analog.com>
---
 drivers/iio/adc/ad7606.c | 4 ++++
 1 file changed, 4 insertions(+)

Patch
diff mbox series

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;