Allow specifying a different interrupt trigger type for wakeup when
using the gpio-keys input device as a wakeup source.

Signed-off-by: Jeffy Chen <jeffy.c...@rock-chips.com>
---

 Documentation/devicetree/bindings/input/gpio-keys.txt | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Documentation/devicetree/bindings/input/gpio-keys.txt 
b/Documentation/devicetree/bindings/input/gpio-keys.txt
index a94940481e55..61926cef708f 100644
--- a/Documentation/devicetree/bindings/input/gpio-keys.txt
+++ b/Documentation/devicetree/bindings/input/gpio-keys.txt
@@ -26,6 +26,15 @@ Optional subnode-properties:
          If not specified defaults to 5.
        - wakeup-source: Boolean, button can wake-up the system.
                         (Legacy property supported: "gpio-key,wakeup")
+       - wakeup-trigger-type: Specifies the interrupt trigger type for wakeup.
+                The value is defined in 
<dt-bindings/interrupt-controller/irq.h>
+                Only the following flags are supported:
+                       IRQ_TYPE_NONE
+                       IRQ_TYPE_EDGE_RISING
+                       IRQ_TYPE_EDGE_FALLING
+                       IRQ_TYPE_EDGE_BOTH
+                       IRQ_TYPE_LEVEL_HIGH
+                       IRQ_TYPE_LEVEL_LOW
        - linux,can-disable: Boolean, indicates that button is connected
          to dedicated (not shared) interrupt which can be disabled to
          suppress events from the button.
-- 
2.11.0


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