diff --git a/Documentation/devicetree/bindings/gpio/gpio-nmk.txt 
b/Documentation/devicetree/bindings/gpio/gpio-nmk.txt
index 3856789..ee87467 100644
--- a/Documentation/devicetree/bindings/gpio/gpio-nmk.txt
+++ b/Documentation/devicetree/bindings/gpio/gpio-nmk.txt
@@ -13,6 +13,7 @@ Required properties:
                                    4 = active high level-sensitive.
                                    8 = active low level-sensitive.
  - gpio-controller       : Marks the device node as a GPIO controller.
+- interrupt-controller  : Marks the device node as an interrupt controller.
  - gpio-bank             : Specifies which bank a controller owns.
  - st,supports-sleepmode : Specifies whether controller can sleep or not

@@ -24,6 +25,7 @@ Example:
                          interrupts = <0 120 0x4>;
                          #gpio-cells = <2>;
                          gpio-controller;
+                        interrupt-controller;
                          supports-sleepmode;
                          gpio-bank = <1>;
                  };