new file mode 100644
@@ -0,0 +1,19 @@
+NVIDIA Tegra Legacy Interrupt Controller
+
+The legacy interrupt controller is divided into units that serve 32 interrupts
+each. Tegra20 implements four units, whereas Tegra30 and later implement five.
+
+Required properties:
+- compatible: "nvidia,tegra<chip>-ictlr"
+- reg: Physical base address and length of the controller's registers. There
+ should be one entry for each unit.
+
+Example:
+
+ interrupt-controller@60004000 {
+ compatible = "nvidia,tegra20-ictlr";
+ reg = <0x60004000 0x40>, /* primary controller */
+ <0x60004100 0x40>, /* secondary controller */
+ <0x60004200 0x40>, /* tertiary controller */
+ <0x60004300 0x40>; /* quaternary controller */
+ };