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iio: adc: ad7606: add enabling of optional Vrefin voltage

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Add optional refin voltage enabling. The property "refin-supply" is
already available and optional in the current fdt dt_schema.

Note that the driver does not need to take any actions if the supply
is not present because a pin strap is used to change the behavior
of the device if an external reference is connected.

Signed-off-by: Angelo Dureghello <adureghello@baylibre.com>
Link: https://patch.msgid.link/20250530-wip-bl-ad7606-reference-voltages-v2-2-d5e1ad7e6f14@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Angelo Dureghello 2025-05-30 16:27:57 +02:00 committed by Jonathan Cameron
parent 82f4ed3a01
commit 3125a5ca45
1 changed files with 5 additions and 0 deletions
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5
drivers/iio/adc/ad7606.c
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@ -1335,6 +1335,11 @@ int ad7606_probe(struct device *dev, int irq, void __iomem *base_address,
return dev_err_probe(dev, ret,
"Failed to enable Vdrive supply\n");
ret = devm_regulator_get_enable_optional(dev, "refin");
if (ret && ret != -ENODEV)
return dev_err_probe(dev, ret,
"Failed to enable REFIN supply\n");
st->chip_info = chip_info;
if (st->chip_info->oversampling_num) {