STM32 ADC trigger polarity can be set to either rising, falling
or both edges. Allow to configure it from dt.
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@xxxxxx>
---
Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt | 3 +++
1 file changed, 3 insertions(+)
diff --git a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt
index 5dfc88e..6c6d968 100644
--- a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt
+++ b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt
@@ -57,6 +57,8 @@ Optional properties:
- dmas: Phandle to dma channel for this ADC instance.
See ../../dma/dma.txt for details.
- dma-names: Must be "rx" when dmas property is being used.
+- st,trigger-polarity: Must be 0 (default), 1 or 2 to set default trigger
+ polarity to respectively "rising-edge", "falling-edge" or "both-edges".
Example:
adc: adc@40012000 {
@@ -84,6 +86,7 @@ Example:
st,adc-channels = <8>;
dmas = <&dma2 0 0 0x400 0x0>;
dma-names = "rx";
+ st,trigger-polarity = <1>;
};
...
other adc child nodes follow...
--
1.9.1
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