Signed-off-by: Maxime Coquelin <mcoquelin.st...@gmail.com>
Signed-off-by: Alexandre TORGUE <alexandre.tor...@st.com>

diff --git 
a/Documentation/devicetree/bindings/interrupt-controller/st,stm32-exti.txt 
b/Documentation/devicetree/bindings/interrupt-controller/st,stm32-exti.txt
new file mode 100644
index 0000000..6e7703d
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/st,stm32-exti.txt
@@ -0,0 +1,20 @@
+STM32 External Interrupt Controller
+
+Required properties:
+
+- compatible: Should be "st,stm32-exti"
+- reg: Specifies base physical address and size of the registers
+- interrupt-controller: Indentifies the node as an interrupt controller
+- #interrupt-cells: Specifies the number of cells to encode an interrupt
+  specifier, shall be 2
+- interrupts: interrupts references to primary interrupt controller
+
+Example:
+
+exti: interrupt-controller@40013c00 {
+       compatible = "st,stm32-exti";
+       interrupt-controller;
+       #interrupt-cells = <2>;
+       reg = <0x40013C00 0x400>;
+       interrupts = <1>, <2>, <3>, <6>, <7>, <8>, <9>, <10>, <23>, <40>, <41>, 
<42>, <62>, <76>;
+};
-- 
1.9.1

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