xref: /linux/Documentation/devicetree/bindings/clock/airoha,en7523-scu.yaml (revision 375c4d1583948cf2439833e4a85d5a0aee853895) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/clock/airoha,en7523-scu.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: EN7523 Clock
8
9maintainers:
10  - Felix Fietkau <nbd@nbd.name>
11  - John Crispin <nbd@nbd.name>
12
13description: |
14  This node defines the System Control Unit of the EN7523 SoC,
15  a collection of registers configuring many different aspects of the SoC.
16
17  The clock driver uses it to read and configure settings of the
18  PLL controller, which provides clocks for the CPU, the bus and
19  other SoC internal peripherals.
20
21  Each clock is assigned an identifier and client nodes use this identifier
22  to specify which clock they consume.
23
24  All these identifiers can be found in:
25  [1]: <include/dt-bindings/clock/en7523-clk.h>.
26
27  The clocks are provided inside a system controller node.
28
29properties:
30  compatible:
31    items:
32      - enum:
33          - airoha,en7523-scu
34          - airoha,en7581-scu
35
36  reg:
37    minItems: 2
38    maxItems: 3
39
40  "#clock-cells":
41    description:
42      The first cell indicates the clock number, see [1] for available
43      clocks.
44    const: 1
45
46required:
47  - compatible
48  - reg
49  - '#clock-cells'
50
51allOf:
52  - if:
53      properties:
54        compatible:
55          const: airoha,en7523-scu
56    then:
57      properties:
58        reg:
59          items:
60            - description: scu base address
61            - description: misc scu base address
62
63  - if:
64      properties:
65        compatible:
66          const: airoha,en7581-scu
67    then:
68      properties:
69        reg:
70          items:
71            - description: scu base address
72            - description: misc scu base address
73            - description: pb scu base address
74
75additionalProperties: false
76
77examples:
78  - |
79    #include <dt-bindings/clock/en7523-clk.h>
80    scu: system-controller@1fa20000 {
81      compatible = "airoha,en7523-scu";
82      reg = <0x1fa20000 0x400>,
83            <0x1fb00000 0x1000>;
84      #clock-cells = <1>;
85    };
86