xref: /freebsd/sys/contrib/device-tree/Bindings/power/fsl,imx-gpcv2.yaml (revision fe75646a0234a261c0013bf1840fdac4acaf0cec) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/power/fsl,imx-gpcv2.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Freescale i.MX General Power Controller v2
8
9maintainers:
10  - Andrey Smirnov <andrew.smirnov@gmail.com>
11
12description: |
13  The i.MX7S/D General Power Control (GPC) block contains Power Gating
14  Control (PGC) for various power domains.
15
16  Power domains contained within GPC node are generic power domain
17  providers, documented in
18  Documentation/devicetree/bindings/power/power-domain.yaml, which are
19  described as subnodes of the power gating controller 'pgc' node.
20
21  IP cores belonging to a power domain should contain a 'power-domains'
22  property that is a phandle for PGC node representing the domain.
23
24properties:
25  compatible:
26    enum:
27      - fsl,imx7d-gpc
28      - fsl,imx8mn-gpc
29      - fsl,imx8mq-gpc
30      - fsl,imx8mm-gpc
31      - fsl,imx8mp-gpc
32
33  reg:
34    maxItems: 1
35
36  interrupts:
37    maxItems: 1
38
39  interrupt-controller: true
40  '#interrupt-cells':
41    const: 3
42
43  pgc:
44    type: object
45    additionalProperties: false
46    description: list of power domains provided by this controller.
47
48    properties:
49      '#address-cells':
50        const: 1
51
52      '#size-cells':
53        const: 0
54
55    patternProperties:
56      "power-domain@[0-9a-f]+$":
57        type: object
58        additionalProperties: false
59
60        properties:
61
62          '#power-domain-cells':
63            const: 0
64
65          reg:
66            description: |
67              Power domain index. Valid values are defined in
68              include/dt-bindings/power/imx7-power.h for fsl,imx7d-gpc and
69              include/dt-bindings/power/imx8m-power.h for fsl,imx8mq-gpc
70              include/dt-bindings/power/imx8mm-power.h for fsl,imx8mm-gpc
71              include/dt-bindings/power/imx8mp-power.h for fsl,imx8mp-gpc
72            maxItems: 1
73
74          clocks:
75            description: |
76              A number of phandles to clocks that need to be enabled during domain
77              power-up sequencing to ensure reset propagation into devices located
78              inside this power domain.
79            minItems: 1
80            maxItems: 5
81
82          power-supply: true
83
84          power-domains:
85            maxItems: 1
86
87          resets:
88            description: |
89              A number of phandles to resets that need to be asserted during
90              power-up sequencing of the domain. The resets belong to devices
91              located inside the power domain, which need to be held in reset
92              across the power-up sequence. So no means to specify what each
93              reset is in a generic power-domain binding.
94            minItems: 1
95            maxItems: 4
96
97        required:
98          - '#power-domain-cells'
99          - reg
100
101    required:
102      - '#address-cells'
103      - '#size-cells'
104
105required:
106  - compatible
107  - reg
108  - interrupts
109  - pgc
110
111additionalProperties: false
112
113examples:
114  - |
115    #include <dt-bindings/interrupt-controller/arm-gic.h>
116
117    gpc@303a0000 {
118        compatible = "fsl,imx7d-gpc";
119        reg = <0x303a0000 0x1000>;
120        interrupts = <GIC_SPI 87 IRQ_TYPE_LEVEL_HIGH>;
121
122        pgc {
123            #address-cells = <1>;
124            #size-cells = <0>;
125
126            pgc_mipi_phy: power-domain@0 {
127                #power-domain-cells = <0>;
128                reg = <0>;
129                power-supply = <&reg_1p0d>;
130            };
131
132            pgc_pcie_phy: power-domain@1 {
133                #power-domain-cells = <0>;
134                reg = <1>;
135                power-supply = <&reg_1p0d>;
136            };
137
138            pgc_hsic_phy: power-domain@2 {
139                #power-domain-cells = <0>;
140                reg = <2>;
141                power-supply = <&reg_1p2>;
142            };
143        };
144    };
145