[PATCH v2 1/2] dt-bindings: virtio: mmio: add optional wakeup-source property

[Minghao Xue <quic_mingxue@xxxxxxxxxxx>]

Some systems want to set the interrupt of virtio_mmio device
as a wakeup source. On such systems, we'll use the existence
of the "wakeup-source" property as a signal of requirement.

Signed-off-by: Minghao Xue <quic_mingxue@xxxxxxxxxxx>
---
v1 -> v2: rename property from "virtio,wakeup" to "wakeup-source"

 Documentation/devicetree/bindings/virtio/mmio.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/virtio/mmio.yaml b/Documentation/devicetree/bindings/virtio/mmio.yaml
index 4b7a027..160b21b 100644
--- a/Documentation/devicetree/bindings/virtio/mmio.yaml
+++ b/Documentation/devicetree/bindings/virtio/mmio.yaml
@@ -31,6 +31,10 @@ properties:
     description: Required for devices making accesses thru an IOMMU.
     maxItems: 1
 
+  wakeup-source:
+    type: boolean
+    description: Required for setting irq of a virtio_mmio device as wakeup source.
+
 required:
   - compatible
   - reg
-- 
2.7.4