Documentation/devicetree/bindings/clock/calxeda.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/clock/calxeda.yaml

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System
Linux kernel
Corpus path
Documentation/devicetree/bindings/clock/calxeda.yaml
Extension
.yaml
Size
1886 bytes
Lines
83
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/calxeda.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Calxeda highbank platform Clock Controller

description: |
  This binding covers the Calxeda SoC internal peripheral and bus clocks
  as used by peripherals. The clocks live inside the "system register"
  region of the SoC, so are typically presented as children of an
  "hb-sregs" node.

maintainers:
  - Andre Przywara <andre.przywara@arm.com>

properties:
  "#clock-cells":
    const: 0

  compatible:
    enum:
      - calxeda,hb-pll-clock
      - calxeda,hb-a9periph-clock
      - calxeda,hb-a9bus-clock
      - calxeda,hb-emmc-clock

  reg:
    maxItems: 1

  clocks:
    maxItems: 1

required:
  - "#clock-cells"
  - compatible
  - clocks
  - reg

additionalProperties: false

examples:
  - |
    sregs@3fffc000 {
        compatible = "calxeda,hb-sregs";
        reg = <0x3fffc000 0x1000>;

        clocks {
            #address-cells = <1>;
            #size-cells = <0>;

            osc: oscillator {
                #clock-cells = <0>;
                compatible = "fixed-clock";
                clock-frequency = <33333000>;
            };

            ddrpll: ddrpll@108 {
                #clock-cells = <0>;
                compatible = "calxeda,hb-pll-clock";
                clocks = <&osc>;
                reg = <0x108>;
            };

            a9pll: a9pll@100 {
                #clock-cells = <0>;
                compatible = "calxeda,hb-pll-clock";
                clocks = <&osc>;
                reg = <0x100>;

Annotation

Implementation Notes