xref: /linux/Documentation/devicetree/bindings/arm/hisilicon/controller/sysctrl.yaml (revision ea518afc992032f7570c0a89ac9240b387dc0faf) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/arm/hisilicon/controller/sysctrl.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Hisilicon system controller
8
9maintainers:
10  - Wei Xu <xuwei5@hisilicon.com>
11
12description: |
13  The Hisilicon system controller is used on many Hisilicon boards, it can be
14  used to assist the slave core startup, reboot the system, etc.
15
16  There are some variants of the Hisilicon system controller, such as HiP01,
17  Hi3519, Hi6220 system controller, each of them is mostly compatible with the
18  Hisilicon system controller, but some same registers located at different
19  offset. In addition, the HiP01 system controller has some specific control
20  registers for HIP01 SoC family, such as slave core boot.
21
22  The compatible names of each system controller are as follows:
23  Hisilicon system controller   --> hisilicon,sysctrl
24  HiP01     system controller   --> hisilicon,hip01-sysctrl
25  Hi6220    system controller   --> hisilicon,hi6220-sysctrl
26  Hi3519    system controller   --> hisilicon,hi3519-sysctrl
27
28allOf:
29  - if:
30      properties:
31        compatible:
32          contains:
33            const: hisilicon,hi6220-sysctrl
34    then:
35      required:
36        - '#clock-cells'
37
38properties:
39  compatible:
40    oneOf:
41      - items:
42          - enum:
43              - hisilicon,sysctrl
44              - hisilicon,hi6220-sysctrl
45              - hisilicon,hi3519-sysctrl
46          - const: syscon
47      - items:
48          - const: hisilicon,hip01-sysctrl
49          - const: hisilicon,sysctrl
50
51  reg:
52    maxItems: 1
53
54  smp-offset:
55    description: |
56      offset in sysctrl for notifying slave cpu booting
57      cpu 1, reg;
58      cpu 2, reg + 0x4;
59      cpu 3, reg + 0x8;
60      If reg value is not zero, cpun exit wfi and go
61    $ref: /schemas/types.yaml#/definitions/uint32
62
63  resume-offset:
64    description: offset in sysctrl for notifying cpu0 when resume
65    $ref: /schemas/types.yaml#/definitions/uint32
66
67  reboot-offset:
68    description: offset in sysctrl for system reboot
69    $ref: /schemas/types.yaml#/definitions/uint32
70
71  '#clock-cells':
72    const: 1
73
74  '#reset-cells':
75    const: 1
76
77  '#address-cells':
78    const: 1
79
80  '#size-cells':
81    const: 1
82
83  ranges: true
84
85patternProperties:
86  '^clock@':
87    type: object
88    additionalProperties: false
89
90    properties:
91      compatible:
92        enum:
93          - hisilicon,hi3620-clock
94          - hisilicon,hi3620-mmc-clock
95
96      reg:
97        maxItems: 1
98
99      '#clock-cells':
100        const: 1
101
102required:
103  - compatible
104  - reg
105
106additionalProperties:
107  type: object
108
109examples:
110  - |
111    /* Hisilicon system controller */
112    system-controller@802000 {
113        compatible = "hisilicon,sysctrl", "syscon";
114        #address-cells = <1>;
115        #size-cells = <1>;
116        ranges = <0 0x802000 0x1000>;
117        reg = <0x802000 0x1000>;
118
119        smp-offset = <0x31c>;
120        resume-offset = <0x308>;
121        reboot-offset = <0x4>;
122
123        clock: clock@0 {
124            compatible = "hisilicon,hi3620-clock";
125            reg = <0 0x10000>;
126            #clock-cells = <1>;
127        };
128    };
129
130    /* HiP01 system controller */
131    system-controller@10000000 {
132        compatible = "hisilicon,hip01-sysctrl", "hisilicon,sysctrl";
133        reg = <0x10000000 0x1000>;
134        reboot-offset = <0x4>;
135    };
136
137    /* Hi6220 system controller */
138    system-controller@f7030000 {
139        compatible = "hisilicon,hi6220-sysctrl", "syscon";
140        reg = <0xf7030000 0x2000>;
141        #clock-cells = <1>;
142    };
143
144    /* Hi3519 system controller */
145    system-controller@12010000 {
146        compatible = "hisilicon,hi3519-sysctrl", "syscon";
147        reg = <0x12010000 0x1000>;
148    };
149...
150