From: Rodrigo Alencar <rodrigo.alencar@analog.com>

Some parts may consume enable GPIO to enable serial mode
(HMC1119's and HMC792A P/S pin) or powerup the device
(e.g. ADA4961's PWUP pin).

Signed-off-by: Rodrigo Alencar <rodrigo.alencar@analog.com>
---
 drivers/iio/amplifiers/ad8366.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/iio/amplifiers/ad8366.c b/drivers/iio/amplifiers/ad8366.c
index fb787a512bff..d4499af0518a 100644
--- a/drivers/iio/amplifiers/ad8366.c
+++ b/drivers/iio/amplifiers/ad8366.c
@@ -217,6 +217,7 @@ static const struct iio_chan_spec ad8366_channels[] = {
 static int ad8366_probe(struct spi_device *spi)
 {
 	struct device *dev = &spi->dev;
+	struct gpio_desc *enable_gpio;
 	struct reset_control *rstc;
 	struct iio_dev *indio_dev;
 	struct ad8366_state *st;
@@ -239,6 +240,11 @@ static int ad8366_probe(struct spi_device *spi)
 	st->spi = spi;
 	st->info = spi_get_device_match_data(spi);
 
+	enable_gpio = devm_gpiod_get_optional(dev, "enable", GPIOD_OUT_HIGH);
+	if (IS_ERR(enable_gpio))
+		return dev_err_probe(dev, PTR_ERR(enable_gpio),
+				     "Failed to get enable GPIO\n");
+
 	rstc = devm_reset_control_get_optional_exclusive_deasserted(dev, NULL);
 	if (IS_ERR(rstc))
 		return dev_err_probe(dev, PTR_ERR(rstc),

-- 
2.43.0