86 lines
2.4 KiB
YAML
86 lines
2.4 KiB
YAML
# 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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$id: http://devicetree.org/schemas/hwmon/apple,smc-hwmon.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Apple SMC Hardware Monitoring
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description:
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Apple's System Management Controller (SMC) exposes a vast array of
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hardware monitoring sensors, including temperature probes, current and
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voltage sense, power meters, and fan speeds. It also provides endpoints
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to manually control the speed of each fan individually. Each Apple
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Silicon device exposes a different set of endpoints via SMC keys. This
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is true even when two machines share an SoC. The CPU core temperature
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sensor keys on an M1 Mac mini are different to those on an M1 MacBook
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Pro, for example.
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maintainers:
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- James Calligeros <jcalligeros99@gmail.com>
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$defs:
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sensor:
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type: object
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properties:
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apple,key-id:
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$ref: /schemas/types.yaml#/definitions/string
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pattern: "^[A-Za-z0-9]{4}$"
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description: The SMC FourCC key of the desired sensor.
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Must match the node's suffix.
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label:
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description: Human-readable name for the sensor
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required:
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- apple,key-id
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properties:
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compatible:
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const: apple,smc-hwmon
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patternProperties:
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"^current-[A-Za-z0-9]{4}$":
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$ref: "#/$defs/sensor"
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unevaluatedProperties: false
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"^fan-[A-Za-z0-9]{4}$":
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$ref: "#/$defs/sensor"
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unevaluatedProperties: false
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properties:
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apple,fan-minimum:
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$ref: /schemas/types.yaml#/definitions/string
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pattern: "^[A-Za-z0-9]{4}$"
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description: SMC key containing the fan's minimum speed
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apple,fan-maximum:
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$ref: /schemas/types.yaml#/definitions/string
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pattern: "^[A-Za-z0-9]{4}$"
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description: SMC key containing the fan's maximum speed
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apple,fan-target:
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$ref: /schemas/types.yaml#/definitions/string
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pattern: "^[A-Za-z0-9]{4}$"
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description: Writeable endpoint for setting desired fan speed
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apple,fan-mode:
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$ref: /schemas/types.yaml#/definitions/string
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pattern: "^[A-Za-z0-9]{4}$"
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description: Writeable key to enable/disable manual fan control
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"^power-[A-Za-z0-9]{4}$":
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$ref: "#/$defs/sensor"
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unevaluatedProperties: false
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"^temperature-[A-Za-z0-9]{4}$":
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$ref: "#/$defs/sensor"
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unevaluatedProperties: false
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"^voltage-[A-Za-z0-9]{4}$":
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$ref: "#/$defs/sensor"
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unevaluatedProperties: false
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additionalProperties: false
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