Documentation/devicetree/bindings/clock/qcom,hfpll.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/clock/qcom,hfpll.yaml

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System
Linux kernel
Corpus path
Documentation/devicetree/bindings/clock/qcom,hfpll.yaml
Extension
.yaml
Size
1474 bytes
Lines
70
Domain
Support Tooling And Documentation
Bucket
Documentation
Inferred role
Support Tooling And Documentation: configuration, schema, or hardware description
Status
atlas-only

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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)
%YAML 1.2
---
$id: http://devicetree.org/schemas/clock/qcom,hfpll.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Qualcomm High-Frequency PLL

maintainers:
  - Bjorn Andersson <andersson@kernel.org>

description:
  The HFPLL is used as CPU PLL on various Qualcomm SoCs.

properties:
  compatible:
    oneOf:
      - enum:
          - qcom,msm8974-hfpll
          - qcom,msm8976-hfpll-a53
          - qcom,msm8976-hfpll-a72
          - qcom,msm8976-hfpll-cci
          - qcom,qcs404-hfpll
      - const: qcom,hfpll
        deprecated: true

  reg:
    items:
      - description: HFPLL registers
      - description: Alias register region
    minItems: 1

  '#clock-cells':
    const: 0

  clocks:
    items:
      - description: board XO clock

  clock-names:
    items:
      - const: xo

  clock-output-names:
    description:
      Name of the PLL. Typically hfpllX where X is a CPU number starting at 0.
      Otherwise hfpll_Y where Y is more specific such as "l2".
    maxItems: 1

required:
  - compatible
  - reg
  - '#clock-cells'
  - clocks
  - clock-names
  - clock-output-names

additionalProperties: false

examples:
  - |
    clock-controller@f908a000 {
        compatible = "qcom,msm8974-hfpll";
        reg = <0xf908a000 0x30>, <0xf900a000 0x30>;
        #clock-cells = <0>;
        clock-output-names = "hfpll0";
        clocks = <&xo_board>;
        clock-names = "xo";
    };

Annotation

Implementation Notes