[deliverable/linux.git] / Documentation / devicetree / bindings / interrupt-controller / ti,omap4-wugen-mpu

TI OMAP4 Wake-up Generator

All TI OMAP4/5 (and their derivatives) an interrupt controller that
routes interrupts to the GIC, and also serves as a wakeup source. It
is also referred to as "WUGEN-MPU", hence the name of the binding.

Reguired properties:

- compatible : should contain at least "ti,omap4-wugen-mpu" or
  "ti,omap5-wugen-mpu"
- reg : Specifies base physical address and size of the registers.
- interrupt-controller : Identifies the node as an interrupt controller.
- #interrupt-cells : Specifies the number of cells needed to encode an
  interrupt source. The value must be 3.
- interrupt-parent : a phandle to the GIC these interrupts are routed
  to.

Notes:

- Because this HW ultimately routes interrupts to the GIC, the
  interrupt specifier must be that of the GIC.
- Only SPIs can use the WUGEN as an interrupt parent. SGIs and PPIs
  are explicitly forbiden.

Example:

       wakeupgen: interrupt-controller@48281000 {
               compatible = "ti,omap5-wugen-mpu", "ti,omap4-wugen-mpu";
               interrupt-controller;
               #interrupt-cells = <3>;
               reg = <0x48281000 0x1000>;
               interrupt-parent = <&gic>;
       };
Commit	Line	Data
918d98db MZ	1	TI OMAP4 Wake-up Generator
	2
	3	All TI OMAP4/5 (and their derivatives) an interrupt controller that
	4	routes interrupts to the GIC, and also serves as a wakeup source. It
	5	is also referred to as "WUGEN-MPU", hence the name of the binding.
	6
	7	Reguired 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
	18	Notes:
	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
	25	Example:
	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	};