1TI OMAP4 Wake-up Generator
2
3All TI OMAP4/5 (and their derivatives) an interrupt controller that
4routes interrupts to the GIC, and also serves as a wakeup source. It
5is also referred to as "WUGEN-MPU", hence the name of the binding.
6
7Required properties:
8
9- compatible : should contain at least "ti,omap4-wugen-mpu" or
10  "ti,omap5-wugen-mpu"
11- reg : Specifies base physical address and size of the registers.
12- interrupt-controller : Identifies the node as an interrupt controller.
13- #interrupt-cells : Specifies the number of cells needed to encode an
14  interrupt source. The value must be 3.
15
16Notes:
17
18- Because this HW ultimately routes interrupts to the GIC, the
19  interrupt specifier must be that of the GIC.
20- Only SPIs can use the WUGEN as an interrupt parent. SGIs and PPIs
21  are explicitly forbidden.
22
23Example:
24
25       wakeupgen: interrupt-controller@48281000 {
26               compatible = "ti,omap5-wugen-mpu", "ti,omap4-wugen-mpu";
27               interrupt-controller;
28               #interrupt-cells = <3>;
29               reg = <0x48281000 0x1000>;
30               interrupt-parent = <&gic>;
31       };
32