1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/power/renesas,sysc-rmobile.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Renesas R-Mobile System Controller
8
9 maintainers:
10 - Geert Uytterhoeven <geert+renesas@glider.be>
11 - Magnus Damm <magnus.damm@gmail.com>
12
13 description: |
14 The R-Mobile System Controller provides the following functions:
15 - Boot mode management,
16 - Reset generation,
17 - Power management.
18
19 properties:
20 compatible:
21 items:
22 - enum:
23 - renesas,sysc-r8a73a4 # R-Mobile APE6
24 - renesas,sysc-r8a7740 # R-Mobile A1
25 - renesas,sysc-sh73a0 # SH-Mobile AG5
26 - const: renesas,sysc-rmobile # Generic SH/R-Mobile
27
28 reg:
29 items:
30 - description: Normally accessible register block
31 - description: Register block protected by the HPB semaphore
32
33 pm-domains:
34 type: object
35 description: |
36 This node contains a hierarchy of PM domain nodes, which should match the
37 Power Area Hierarchy in the Power Domain Specifications section of the
38 device's datasheet.
39
40 properties:
41 '#address-cells':
42 const: 1
43
44 '#size-cells':
45 const: 0
46
47 additionalProperties:
48 $ref: "#/$defs/pd-node"
49
50 required:
51 - compatible
52 - reg
53 - pm-domains
54
55 additionalProperties: false
56
57 $defs:
58 pd-node:
59 type: object
60 description:
61 PM domain node representing a PM domain. This node should be named by
62 the real power area name, and thus its name should be unique.
63
64 properties:
65 reg:
66 maxItems: 1
67 description:
68 If the PM domain is not always-on, this property must contain the
69 bit index number for the corresponding power area in the various
70 Power Control and Status Registers.
71 If the PM domain is always-on, this property must be omitted.
72
73 '#address-cells':
74 const: 1
75
76 '#size-cells':
77 const: 0
78
79 '#power-domain-cells':
80 const: 0
81
82 required:
83 - '#power-domain-cells'
84
85 additionalProperties:
86 $ref: "#/$defs/pd-node"
87
88 examples:
89 - |
90 // This shows a subset of the r8a7740 PM domain hierarchy, containing the
91 // C5 "always-on" domain, 2 of its subdomains (A4S and A4SU), and the A3SP
92 // domain, which is a subdomain of A4S.
93 sysc: system-controller@e6180000 {
94 compatible = "renesas,sysc-r8a7740", "renesas,sysc-rmobile";
95 reg = <0xe6180000 0x8000>, <0xe6188000 0x8000>;
96
97 pm-domains {
98 pd_c5: c5 {
99 #address-cells = <1>;
100 #size-cells = <0>;
101 #power-domain-cells = <0>;
102
103 pd_a4s: a4s@10 {
104 reg = <10>;
105 #address-cells = <1>;
106 #size-cells = <0>;
107 #power-domain-cells = <0>;
108
109 pd_a3sp: a3sp@11 {
110 reg = <11>;
111 #power-domain-cells = <0>;
112 };
113 };
114
115 pd_a4su: a4su@20 {
116 reg = <20>;
117 #power-domain-cells = <0>;
118 };
119 };
120 };
121 };
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