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+* Advanced Interrupt Controller (AIC)
+
+Required properties:
+- compatible: Should be "atmel,<chip>-aic"
+- interrupt-controller: Identifies the node as an interrupt controller.
+- interrupt-parent: For single AIC system, it is an empty property.
+- #interrupt-cells: The number of cells to define the interrupts. It sould be 2.
+  The first cell is the IRQ number (aka "Peripheral IDentifier" on datasheet).
+  The second cell is used to specify flags:
+    bits[3:0] trigger type and level flags:
+      1 = low-to-high edge triggered.
+      2 = high-to-low edge triggered.
+      4 = active high level-sensitive.
+      8 = active low level-sensitive.
+      Valid combinations are 1, 2, 3, 4, 8.
+      Default flag for internal sources should be set to 4 (active high).
+- reg: Should contain AIC registers location and length
+
+Examples:
+        /*
+         * AIC
+         */
+        aic: interrupt-controller@fffff000 {
+                compatible = "atmel,at91rm9200-aic";
+                interrupt-controller;
+                interrupt-parent;
+                #interrupt-cells = <2>;
+                reg = <0xfffff000 0x200>;
+        };
+
+        /*
+         * An interrupt generating device that is wired to an AIC.
+         */
+        dma: dma-controller@ffffec00 {
+                compatible = "atmel,at91sam9g45-dma";
+                reg = <0xffffec00 0x200>;
+                interrupts = <21 4>;
+        };