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authorMarc Zyngier <marc.zyngier@arm.com>2015-03-11 11:43:48 -0400
committerJason Cooper <jason@lakedaemon.net>2015-03-14 20:56:08 -0400
commit918d98db8c97c01e538e6438e18a69cbceeb5ec6 (patch)
tree004d73b1ed29b52e4378c6f60f0452ec2c58776c
parent994dd8a3283cd332801ccbe099b2517e8b7055d0 (diff)
DT: omap4/5: add binding for the wake-up generator
Add a binding for the OMAP4/5 wake-up generator, which acts as an interrupt controller feeding into the GIC. Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Link: https://lkml.kernel.org/r/1426088629-15377-7-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
-rw-r--r--Documentation/devicetree/bindings/interrupt-controller/ti,omap4-wugen-mpu33
1 files changed, 33 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/interrupt-controller/ti,omap4-wugen-mpu b/Documentation/devicetree/bindings/interrupt-controller/ti,omap4-wugen-mpu
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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 };