Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.yaml
Extension
.yaml
Size
9976 bytes
Lines
410
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.

Dependency Surface

Detected Declarations

Annotated Snippet

# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/cpufreq/cpufreq-qcom-hw.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Qualcomm Technologies, Inc. CPUFREQ

maintainers:
  - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>

description: |

  CPUFREQ HW is a hardware engine used by some Qualcomm Technologies, Inc. (QTI)
  SoCs to manage frequency in hardware. It is capable of controlling frequency
  for multiple clusters.

properties:
  compatible:
    oneOf:
      - description: v1 of CPUFREQ HW
        items:
          - enum:
              - qcom,qcm2290-cpufreq-hw
              - qcom,qcs615-cpufreq-hw
              - qcom,sc7180-cpufreq-hw
              - qcom,sc8180x-cpufreq-hw
              - qcom,sdm670-cpufreq-hw
              - qcom,sdm845-cpufreq-hw
              - qcom,sm6115-cpufreq-hw
              - qcom,sm6350-cpufreq-hw
              - qcom,sm8150-cpufreq-hw
          - const: qcom,cpufreq-hw

      - description: v2 of CPUFREQ HW (EPSS)
        items:
          - enum:
              - qcom,eliza-cpufreq-epss
              - qcom,milos-cpufreq-epss
              - qcom,qcs8300-cpufreq-epss
              - qcom,qdu1000-cpufreq-epss
              - qcom,sa8255p-cpufreq-epss
              - qcom,sa8775p-cpufreq-epss
              - qcom,sar2130p-cpufreq-epss
              - qcom,sc7280-cpufreq-epss
              - qcom,sc8280xp-cpufreq-epss
              - qcom,sdx75-cpufreq-epss
              - qcom,sm4450-cpufreq-epss
              - qcom,sm6375-cpufreq-epss
              - qcom,sm8250-cpufreq-epss
              - qcom,sm8350-cpufreq-epss
              - qcom,sm8450-cpufreq-epss
              - qcom,sm8550-cpufreq-epss
              - qcom,sm8650-cpufreq-epss
          - const: qcom,cpufreq-epss

  reg:
    minItems: 1
    items:
      - description: Frequency domain 0 register region
      - description: Frequency domain 1 register region
      - description: Frequency domain 2 register region
      - description: Frequency domain 3 register region

  reg-names:
    minItems: 1
    items:
      - const: freq-domain0
      - const: freq-domain1
      - const: freq-domain2

Annotation

Implementation Notes