iio: adc: ad7124: add external clock support

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Add support for an external clock source to the AD7124 ADC driver.

Previously, the driver only supported using the internal clock and had
bad devicetree bindings that used a fake clock to essentially select
the power mode. This is preserved for backwards compatibility.

If the clock is not named "mclk", then we know that the devicetree is
using the correct bindings and we can configure the chip to use an
external clock source rather than internal.

Also drop a redundant comment when configuring the register fields
instead of adding more.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20250828-iio-adc-ad7124-proper-clock-support-v3-3-0b317b4605e5@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

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David Lechner 2025-08-28 16:54:54 -05:00 • committed by Jonathan Cameron

parent aead8e4cc0

commit ed231e253f

1 changed files with 76 additions and 7 deletions

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drivers/iio/adc/ad7124.c

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