[PATCH v3 03/11] dt-bindings: iommu: apple, dart: Add power-domains property

[Hector Martin]

This will bind to the PMGR pwrstate nodes that control power/clock
gating to SoC blocks. The DART driver doesn't do runtime-pm yet, so
initially this will just keep the domain on permanently.

Signed-off-by: Hector Martin <marcan at marcan.st>
---
 Documentation/devicetree/bindings/iommu/apple,dart.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/iommu/apple,dart.yaml b/Documentation/devicetree/bindings/iommu/apple,dart.yaml
index 94aa9e9afa59..82ad669feef7 100644
--- a/Documentation/devicetree/bindings/iommu/apple,dart.yaml
+++ b/Documentation/devicetree/bindings/iommu/apple,dart.yaml
@@ -41,6 +41,9 @@ properties:
       Has to be one. The single cell describes the stream id emitted by
       a master to the IOMMU.
 
+  power-domains:
+    maxItems: 1
+
 required:
   - compatible
   - reg
-- 
2.33.0