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
7Reguired 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- interrupt-parent : a phandle to the GIC these interrupts are routed
16  to.
17
18Notes:
19
20- Because this HW ultimately routes interrupts to the GIC, the
21  interrupt specifier must be that of the GIC.
22- Only SPIs can use the WUGEN as an interrupt parent. SGIs and PPIs
23  are explicitly forbiden.
24
25Example:
26
27       wakeupgen: interrupt-controller@48281000 {
28               compatible = "ti,omap5-wugen-mpu", "ti,omap4-wugen-mpu";
29               interrupt-controller;
30               #interrupt-cells = <3>;
31               reg = <0x48281000 0x1000>;
32               interrupt-parent = <&gic>;
33       };
34