2023-08-30 17:31:07 +02:00
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/power/apple,pmgr-pwrstate.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Apple SoC PMGR Power States
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maintainers:
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- Hector Martin <marcan@marcan.st>
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allOf:
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- $ref: power-domain.yaml#
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description: |
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Apple SoCs include PMGR blocks responsible for power management,
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which can control various clocks, resets, power states, and
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performance features. This binding describes the device power
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state registers, which control power states and resets.
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Each instance of a power controller within the PMGR syscon node
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represents a generic power domain provider, as documented in
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Documentation/devicetree/bindings/power/power-domain.yaml.
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The provider controls a single SoC block. The power hierarchy is
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represented via power-domains relationships between these nodes.
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See Documentation/devicetree/bindings/arm/apple/apple,pmgr.yaml
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for the top-level PMGR node documentation.
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properties:
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compatible:
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items:
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- enum:
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- apple,t8103-pmgr-pwrstate
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2023-10-24 12:59:35 +02:00
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- apple,t8112-pmgr-pwrstate
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2023-08-30 17:31:07 +02:00
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- apple,t6000-pmgr-pwrstate
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- const: apple,pmgr-pwrstate
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reg:
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maxItems: 1
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"#power-domain-cells":
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const: 0
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"#reset-cells":
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const: 0
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power-domains:
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description:
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Reference to parent power domains. A domain may have multiple parents,
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and all will be powered up when it is powered.
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minItems: 1
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maxItems: 8 # Arbitrary, should be enough
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label:
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description:
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Specifies the name of the SoC domain being controlled. This is used to
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name the power/reset domains.
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apple,always-on:
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description:
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Forces this power domain to always be powered up.
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type: boolean
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apple,min-state:
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description:
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Specifies the minimum power state for auto-PM.
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0 = power gated, 4 = clock gated, 15 = on.
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 0
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maximum: 15
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required:
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- compatible
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- reg
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- "#power-domain-cells"
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- "#reset-cells"
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- label
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additionalProperties: false
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