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 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Freescale i.MX General Power Controller v2
8
9 maintainers:
10 - Andrey Smirnov <andrew.smirnov@gmail.com>
11
12 description: |
13 The i.MX7S/D General Power Control (GPC) block contains Power Gating
14 Control (PGC) for various power domains.
15
16 Power domains contained within GPC node are generic power domain
17 providers, documented in
18 Documentation/devicetree/bindings/power/power-domain.yaml, which are
19 described as subnodes of the power gating controller 'pgc' node.
20
21 IP cores belonging to a power domain should contain a 'power-domains'
22 property that is a phandle for PGC node representing the domain.
23
24 properties:
25 compatible:
26 enum:
27 - fsl,imx7d-gpc
28 - fsl,imx8mn-gpc
29 - fsl,imx8mq-gpc
30 - fsl,imx8mm-gpc
31 - fsl,imx8mp-gpc
32
33 reg:
34 maxItems: 1
35
36 interrupts:
37 maxItems: 1
38
39 interrupt-controller: true
40 '#interrupt-cells':
41 const: 3
42
43 pgc:
44 type: object
45 additionalProperties: false
46 description: list of power domains provided by this controller.
47
48 properties:
49 '#address-cells':
50 const: 1
51
52 '#size-cells':
53 const: 0
54
55 patternProperties:
56 "power-domain@[0-9a-f]+$":
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
105 required:
106 - compatible
107 - reg
108 - interrupts
109 - pgc
110
111 additionalProperties: false
112
113 examples:
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 = <®_1p0d>;
130 };
131
132 pgc_pcie_phy: power-domain@1 {
133 #power-domain-cells = <0>;
134 reg = <1>;
135 power-supply = <®_1p0d>;
136 };
137
138 pgc_hsic_phy: power-domain@2 {
139 #power-domain-cells = <0>;
140 reg = <2>;
141 power-supply = <®_1p2>;
142 };
143 };
144 };
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