xref: /linux/Documentation/devicetree/bindings/reset/socionext,uniphier-glue-reset.yaml (revision ae22a94997b8a03dcb3c922857c203246711f9d4) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/reset/socionext,uniphier-glue-reset.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Socionext UniPhier peripheral core reset in glue layer
8
9description: |
10  Some peripheral core reset belongs to its own glue layer. Before using
11  this core reset, it is necessary to control the clocks and resets to
12  enable this layer. These clocks and resets should be described in each
13  property.
14
15maintainers:
16  - Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
17
18properties:
19  compatible:
20    enum:
21      - socionext,uniphier-pro4-usb3-reset
22      - socionext,uniphier-pro5-usb3-reset
23      - socionext,uniphier-pxs2-usb3-reset
24      - socionext,uniphier-ld20-usb3-reset
25      - socionext,uniphier-pxs3-usb3-reset
26      - socionext,uniphier-nx1-usb3-reset
27      - socionext,uniphier-pro4-ahci-reset
28      - socionext,uniphier-pxs2-ahci-reset
29      - socionext,uniphier-pxs3-ahci-reset
30
31  reg:
32    maxItems: 1
33
34  "#reset-cells":
35    const: 1
36
37  clocks:
38    minItems: 1
39    maxItems: 2
40
41  clock-names: true
42
43  resets:
44    minItems: 1
45    maxItems: 2
46
47  reset-names: true
48
49allOf:
50  - if:
51      properties:
52        compatible:
53          contains:
54            enum:
55              - socionext,uniphier-pro4-usb3-reset
56              - socionext,uniphier-pro5-usb3-reset
57              - socionext,uniphier-pro4-ahci-reset
58    then:
59      properties:
60        clocks:
61          minItems: 2
62          maxItems: 2
63        clock-names:
64          items:
65            - const: gio
66            - const: link
67        resets:
68          minItems: 2
69          maxItems: 2
70        reset-names:
71          items:
72            - const: gio
73            - const: link
74    else:
75      properties:
76        clocks:
77          maxItems: 1
78        clock-names:
79          const: link
80        resets:
81          maxItems: 1
82        reset-names:
83          const: link
84
85additionalProperties: false
86
87required:
88  - compatible
89  - reg
90  - "#reset-cells"
91  - clocks
92  - clock-names
93  - resets
94  - reset-names
95
96examples:
97  - |
98    usb_rst: reset-controller@0 {
99        compatible = "socionext,uniphier-ld20-usb3-reset";
100        reg = <0x0 0x4>;
101        #reset-cells = <1>;
102        clock-names = "link";
103        clocks = <&sys_clk 14>;
104        reset-names = "link";
105        resets = <&sys_rst 14>;
106    };
107