Rob Herring points out that "The default for .*-names is the entries don't have to be unique.": https://lore.kernel.org/linux-phy/20251204155219.GA1533839-robh@kernel.org/ Let's use uniqueItems: true to make sure the schema enforces this. It doesn't make sense in this case to have duplicate properties for the same SerDes protocol. Note that this can only be done with the $defs + $ref pattern as established by the previous commit. When the tx-p2p-microvolt-names constraints were expressed directly under "properties", it would have been validated by the string-array meta-schema, which does not support the 'uniqueItems' keyword as can be seen below. properties:tx-p2p-microvolt-names: Additional properties are not allowed ('uniqueItems' was unexpected) from schema $id: http://devicetree.org/meta-schemas/string-array.yaml Suggested-by: Rob Herring Signed-off-by: Vladimir Oltean Reviewed-by: Rob Herring (Arm) --- v2->v3: none v1->v2: patch is new Documentation/devicetree/bindings/phy/phy-common-props.yaml | 1 + 1 file changed, 1 insertion(+) diff --git a/Documentation/devicetree/bindings/phy/phy-common-props.yaml b/Documentation/devicetree/bindings/phy/phy-common-props.yaml index 775f4dfe3cc3..31bf1382262a 100644 --- a/Documentation/devicetree/bindings/phy/phy-common-props.yaml +++ b/Documentation/devicetree/bindings/phy/phy-common-props.yaml @@ -21,6 +21,7 @@ $defs: 'default' is not provided, the system should use manufacturer default value. minItems: 1 maxItems: 16 + uniqueItems: true items: enum: - default -- 2.43.0