Commit b18c56a6 authored by Rob Herring's avatar Rob Herring
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dt-bindings: arm: psci: Relax and simplify compatible constraints 



Even PSCI v1.0 compliant implementations may support v0.1 clients
(i.e. "arm,psci"). Relax the compatible schema such that an
implementation can claim 1.0, 0.2, and 0.1 compatibility.

In the process, the schema can be simplified a bit by using 'minItems'
instead of separate 'oneOf' entries.

Signed-off-by: default avatarRob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220803201639.2552581-1-robh@kernel.org
parent 568035b0

Documentation/devicetree/bindings/arm/psci.yaml

+3 −8
Original line number Diff line number Diff line
@@ -41,31 +41,26 @@ properties: 
          For implementations complying to PSCI versions prior to 0.2.

        const: arm,psci



      - description:

          For implementations complying to PSCI 0.2.

        const: arm,psci-0.2



      - description:

          For implementations complying to PSCI 0.2.

          Function IDs are not required and should be ignored by an OS with

          PSCI 0.2 support, but are permitted to be present for compatibility

          with existing software when "arm,psci" is later in the compatible

          list.

        minItems: 1

        items:

          - const: arm,psci-0.2

          - const: arm,psci



      - description:

          For implementations complying to PSCI 1.0.

        const: arm,psci-1.0



      - description:

          For implementations complying to PSCI 1.0.

          PSCI 1.0 is backward compatible with PSCI 0.2 with minor

          specification updates, as defined in the PSCI specification[2].

        minItems: 1

        items:

          - const: arm,psci-1.0

          - const: arm,psci-0.2

          - const: arm,psci



  method:

    description: The method of calling the PSCI firmware.