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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: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220803201639.2552581-1-robh@kernel.org
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Documentation/devicetree/bindings/arm/psci.yaml
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Documentation/devicetree/bindings/arm/psci.yaml
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- description:
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For implementations complying to PSCI 0.2.
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const: arm,psci-0.2
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-
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- description:
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For implementations complying to PSCI 0.2.
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Function IDs are not required and should be ignored by an OS with
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PSCI 0.2 support, but are permitted to be present for compatibility
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with existing software when "arm,psci" is later in the compatible
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list.
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minItems: 1
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items:
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- const: arm,psci-0.2
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- const: arm,psci
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- description:
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For implementations complying to PSCI 1.0.
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const: arm,psci-1.0
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-
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- description:
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For implementations complying to PSCI 1.0.
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PSCI 1.0 is backward compatible with PSCI 0.2 with minor
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specification updates, as defined in the PSCI specification[2].
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minItems: 1
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items:
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- const: arm,psci-1.0
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- const: arm,psci-0.2
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- const: arm,psci
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method:
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description: The method of calling the PSCI firmware.