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- 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 forbidden. 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