[PATCH v3 5/6] dt-bindings: iio: stm32-adc: add external interrupt trigger
From: Fabrice Gasnier <hidden>
Date: 2017-02-28 18:24:37
Also in:
linux-devicetree, linux-iio, lkml
Subsystem:
iio subsystem and drivers, open firmware and flattened device tree bindings, the rest · Maintainers:
Jonathan Cameron, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Document support for EXTI trigger. STM32 ADC can use external interrupt line as trigger source for conversions. Signed-off-by: Fabrice Gasnier <redacted> --- .../devicetree/bindings/iio/adc/st,stm32-adc.txt | 21 +++++++++++++++++++++ 1 file changed, 21 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..9e4af7f 100644
--- a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt
+++ b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt@@ -57,6 +57,10 @@ 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. +- io-triggers: Phandle to external interrupt trigger (e.g. EXTI). Must be + phandle to EXTI11 on stm32f4. See ../iio-bindings.txt for details on trigger + consumer. +- io-trigger-names: Must be "exti" when io-triggers property is being used. Example: adc: adc at 40012000 {
@@ -88,3 +92,20 @@ Example: ... other adc child nodes follow... }; + +Example with EXTI11 trigger: + trig: interrupt-trigger { + #io-trigger-cells = <0>; + compatible = "interrupt-trigger"; + interrupts = <11 0>; + interrupt-parent = <&gpioa>; + } + + adc: adc at 40012000 { + ... + adc at 0 { + ... + io-triggers = <&trig>; + io-trigger-names = "exti"; + }; + };
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1.9.1