dt-bindings: iio: adc: ad4130: Document interrupts property

The Data Ready/FIFO interrupt has a special behavior that inverts the
IRQ polarity when devices with FIFO support enter FIFO mode, while using
normal polarity for data ready.

Document the interrupts property to clarify this special behavior for
users.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Jonathan Santos <Jonathan.Santos@analog.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad4130.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad4130.yaml
index d00690a8d3fbd92ad1c46353b75a26fe88ef2402..fcc00e5cfd543e8228f6fac1fe801f2385625133 100644 (file)
--- a/Documentation/devicetree/bindings/iio/adc/adi,ad4130.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ad4130.yaml
@@ -32,6 +32,10 @@ properties:
 
   interrupts:
     maxItems: 1
+    description: |
+      Data Ready / FIFO interrupt. For devices with FIFO support, the
+      interrupt polarity specified here is inverted when the device enters
+      FIFO mode, and normal for data ready.
 
   interrupt-names:
     description: |