dt-bindings: arm: Add some constraints for PSCI nodes

There's no point allowing anything else but "psci" for the corresponding
nodename of the PSCI node, so let's make this an explicit requirement.

Moreover, let's also prevent additional properties, which also allows a
better verification of the "patternProperties" bindings for subnodes.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>

diff --git a/Documentation/devicetree/bindings/arm/psci.yaml b/Documentation/devicetree/bindings/arm/psci.yaml
index 5e66934455bbc986afb759e32be3ed2e4e80b8a5..9247b58c26fc99bb26563fa27a0aada876eb45dd 100644 (file)
--- a/Documentation/devicetree/bindings/arm/psci.yaml
+++ b/Documentation/devicetree/bindings/arm/psci.yaml
@@ -32,6 +32,9 @@ description: |+
     http://infocenter.arm.com/help/topic/com.arm.doc.den0022c/DEN0022C_Power_State_Coordination_Interface.pdf
 
 properties:
+  $nodename:
+    const: psci
+
   compatible:
     oneOf:
       - description:
@@ -141,6 +144,8 @@ allOf:
         - cpu_off
         - cpu_on
 
+additionalProperties: false
+
 examples:
   - |+