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dt-bindings: of: irq: document properties for wakeup interrupt parent

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Some interrupt controllers in a SoC, are always powered on and have a
select interrupts routed to them, so that they can wakeup the SoC from
suspend. Add wakeup-parent DT property to refer to these interrupt
controllers.

Change-Id: I3601e3a037250a77253dce281c5f503400a6dc26
This commit is contained in:
Lina Iyer 2019-03-12 17:23:13 -06:00 • committed by Maulik Shah
commit 6eb89f9ee2
1 changed files with 13 additions and 0 deletions
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13
bindings/interrupt-controller/interrupts.txt
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@ -108,3 +108,16 @@ commonly used:
sensitivity = <7>;
};
};
3) Interrupt wakeup parent
--------------------------
Some interrupt controllers in a SoC, are always powered on and have a select
interrupts routed to them, so that they can wakeup the SoC from suspend. These
interrupt controllers do not fall into the category of a parent interrupt
controller and can be specified by the "wakeup-parent" property and contain a
single phandle referring to the wakeup capable interrupt controller.
Example:
wakeup-parent = <&pdc_intc>;