From 09d31567f85b6cd0eddf28d90f7b83be09ee282b Mon Sep 17 00:00:00 2001 From: Lina Iyer Date: Fri, 15 Nov 2019 15:11:48 -0700 Subject: [PATCH] of/irq: Document properties for wakeup interrupt 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. Add wakeup-parent DT property to refer to these interrupt controllers. Signed-off-by: Lina Iyer Signed-off-by: Marc Zyngier Reviewed-by: Rob Herring Reviewed-by: Linus Walleij Reviewed-by: Stephen Boyd Link: https://lore.kernel.org/r/1573855915-9841-6-git-send-email-ilina@codeaurora.org --- .../devicetree/bindings/interrupt-controller/interrupts.txt | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/Documentation/devicetree/bindings/interrupt-controller/interrupts.txt b/Documentation/devicetree/bindings/interrupt-controller/interrupts.txt index 4a3ee253f7f0..4ebfa0008781 100644 --- a/Documentation/devicetree/bindings/interrupt-controller/interrupts.txt +++ b/Documentation/devicetree/bindings/interrupt-controller/interrupts.txt @@ -108,3 +108,15 @@ 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>; -- 2.11.0