FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/power/domain-idle-state.yaml

     # SPDX-License-Identifier: GPL-2.0
     %YAML 1.2
     ---
     $id: http://devicetree.org/schemas/power/domain-idle-state.yaml#
     $schema: http://devicetree.org/meta-schemas/core.yaml#
     
     title: PM Domain Idle States binding description
     
     maintainers:
      - Ulf Hansson <ulf.hansson@linaro.org>
    
    description:
      A domain idle state node represents the state parameters that will be used to
      select the state when there are no active components in the PM domain.
    
    properties:
      $nodename:
        const: domain-idle-states
    
    patternProperties:
      "^(cpu|cluster|domain)-":
        type: object
        description:
          Each state node represents a domain idle state description.
    
        properties:
          compatible:
            const: domain-idle-state
    
          entry-latency-us:
            description:
              The worst case latency in microseconds required to enter the idle
              state. Note that, the exit-latency-us duration may be guaranteed only
              after the entry-latency-us has passed.
    
          exit-latency-us:
            description:
              The worst case latency in microseconds required to exit the idle
              state.
    
          min-residency-us:
            description:
              The minimum residency duration in microseconds after which the idle
              state will yield power benefits, after overcoming the overhead while
              entering the idle state.
    
        required:
          - compatible
          - entry-latency-us
          - exit-latency-us
          - min-residency-us
    
    additionalProperties: false
    
    examples:
      - |
    
        domain-idle-states {
          domain_retention: domain-retention {
            compatible = "domain-idle-state";
            entry-latency-us = <20>;
            exit-latency-us = <40>;
            min-residency-us = <80>;
          };
        };
    ...

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