Documentation/devicetree/bindings/thermal/qcom-lmh.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/thermal/qcom-lmh.yaml

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System
Linux kernel
Corpus path
Documentation/devicetree/bindings/thermal/qcom-lmh.yaml
Extension
.yaml
Size
2274 bytes
Lines
92
Domain
Support Tooling And Documentation
Bucket
Documentation
Inferred role
Support Tooling And Documentation: configuration, schema, or hardware description
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

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Annotated Snippet

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
# Copyright 2021 Linaro Ltd.
%YAML 1.2
---
$id: http://devicetree.org/schemas/thermal/qcom-lmh.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Qualcomm Limits Management Hardware(LMh)

maintainers:
  - Thara Gopinath <thara.gopinath@gmail.com>

description:
  Limits Management Hardware(LMh) is a hardware infrastructure on some
  Qualcomm SoCs that can enforce temperature and current limits as
  programmed by software for certain IPs like CPU.

properties:
  compatible:
    oneOf:
      - enum:
          - qcom,sc8180x-lmh
          - qcom,sdm845-lmh
          - qcom,sm8150-lmh
      - items:
          - const: qcom,sdm670-lmh
          - const: qcom,sdm845-lmh
      - items:
          - const: qcom,qcm2290-lmh
          - const: qcom,sm8150-lmh

  reg:
    items:
      - description: core registers

  interrupts:
    maxItems: 1

  '#interrupt-cells':
    const: 1

  interrupt-controller: true

  cpus:
    description:
      phandle of the first cpu in the LMh cluster
    maxItems: 1

  qcom,lmh-temp-arm-millicelsius:
    description:
      An integer expressing temperature threshold at which the LMh thermal
      FSM is engaged.

  qcom,lmh-temp-low-millicelsius:
    description:
      An integer expressing temperature threshold at which the state machine
      will attempt to remove frequency throttling.

  qcom,lmh-temp-high-millicelsius:
    description:
      An integer expressing temperature threshold at which the state machine
      will attempt to throttle the frequency.

required:
  - compatible
  - reg
  - interrupts
  - '#interrupt-cells'
  - interrupt-controller
  - cpus

Annotation

Implementation Notes