summaryrefslogtreecommitdiff
path: root/Documentation/devicetree/bindings/clock/fixed-clock.yaml
blob: 90fb1066068470943b09920f42176b7940b4a1c5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/clock/fixed-clock.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Simple fixed-rate clock sources

maintainers:
  - Michael Turquette <mturquette@baylibre.com>
  - Stephen Boyd <sboyd@kernel.org>

properties:
  $nodename:
    anyOf:
      - description:
          Preferred name is 'clock-<freq>' with <freq> being the output
          frequency as defined in the 'clock-frequency' property.
        pattern: "^clock-([0-9]+|[a-z0-9-]+)$"
      - description: Any name allowed
        deprecated: true

  compatible:
    const: fixed-clock

  "#clock-cells":
    const: 0

  clock-frequency: true

  clock-accuracy:
    description: accuracy of clock in ppb (parts per billion).
    $ref: /schemas/types.yaml#/definitions/uint32

  clock-output-names:
    maxItems: 1

required:
  - compatible
  - "#clock-cells"
  - clock-frequency

additionalProperties: false

examples:
  - |
    clock {
      compatible = "fixed-clock";
      #clock-cells = <0>;
      clock-frequency = <1000000000>;
      clock-accuracy = <100>;
    };
...