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author | Marc Zyngier <marc.zyngier@arm.com> | 2015-03-11 15:43:48 +0000 |
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committer | Jason Cooper <jason@lakedaemon.net> | 2015-03-15 00:56:08 +0000 |
commit | 918d98db8c97c01e538e6438e18a69cbceeb5ec6 (patch) | |
tree | 004d73b1ed29b52e4378c6f60f0452ec2c58776c /Documentation/devicetree/bindings/interrupt-controller | |
parent | 994dd8a3283cd332801ccbe099b2517e8b7055d0 (diff) | |
download | op-kernel-dev-918d98db8c97c01e538e6438e18a69cbceeb5ec6.zip op-kernel-dev-918d98db8c97c01e538e6438e18a69cbceeb5ec6.tar.gz |
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>
Diffstat (limited to 'Documentation/devicetree/bindings/interrupt-controller')
-rw-r--r-- | Documentation/devicetree/bindings/interrupt-controller/ti,omap4-wugen-mpu | 33 |
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 new file mode 100644 index 0000000..43effa0 --- /dev/null +++ b/Documentation/devicetree/bindings/interrupt-controller/ti,omap4-wugen-mpu @@ -0,0 +1,33 @@ +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>; + }; |