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-gpc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Freescale i.MX General Power Controller
8
9 maintainers:
10 - Philipp Zabel <p.zabel@pengutronix.de>
11
12 description: |
13 The i.MX6 General Power Control (GPC) block contains DVFS load tracking
14 counters and Power Gating Control (PGC).
15
16 The power domains are generic power domain providers as documented in
17 Documentation/devicetree/bindings/power/power-domain.yaml. They are
18 described as subnodes of the power gating controller 'pgc' node of the GPC.
19
20 IP cores belonging to a power domain should contain a 'power-domains'
21 property that is a phandle pointing to the power domain the device belongs
22 to.
23
24 properties:
25 compatible:
26 oneOf:
27 - enum:
28 - fsl,imx6q-gpc
29 - items:
30 - enum:
31 - fsl,imx6qp-gpc
32 - fsl,imx6sl-gpc
33 - fsl,imx6sx-gpc
34 - fsl,imx6ul-gpc
35 - const: fsl,imx6q-gpc
36
37 reg:
38 maxItems: 1
39
40 interrupts:
41 maxItems: 1
42
43 interrupt-controller: true
44 '#interrupt-cells':
45 const: 3
46
47 clocks:
48 maxItems: 1
49
50 clock-names:
51 const: ipg
52
53 pgc:
54 type: object
55 additionalProperties: false
56 description: list of power domains provided by this controller.
57
58 properties:
59 '#address-cells':
60 const: 1
61
62 '#size-cells':
63 const: 0
64
65 patternProperties:
66 "power-domain@[0-9]$":
67 type: object
68 additionalProperties: false
69
70 properties:
71
72 '#power-domain-cells':
73 const: 0
74
75 reg:
76 description: |
77 The following DOMAIN_INDEX values are valid for i.MX6Q:
78 ARM_DOMAIN 0
79 PU_DOMAIN 1
80 The following additional DOMAIN_INDEX value is valid for i.MX6SL:
81 DISPLAY_DOMAIN 2
82 The following additional DOMAIN_INDEX value is valid for i.MX6SX:
83 PCI_DOMAIN 3
84 maxItems: 1
85
86 clocks:
87 description: |
88 A number of phandles to clocks that need to be enabled during domain
89 power-up sequencing to ensure reset propagation into devices located
90 inside this power domain.
91 minItems: 1
92 maxItems: 7
93
94 power-supply: true
95
96 required:
97 - '#power-domain-cells'
98 - reg
99
100 required:
101 - '#address-cells'
102 - '#size-cells'
103
104 required:
105 - compatible
106 - reg
107 - interrupts
108 - clocks
109 - clock-names
110 - pgc
111
112 additionalProperties: false
113
114 examples:
115 - |
116 #include <dt-bindings/clock/imx6qdl-clock.h>
117 #include <dt-bindings/interrupt-controller/arm-gic.h>
118
119 gpc@20dc000 {
120 compatible = "fsl,imx6q-gpc";
121 reg = <0x020dc000 0x4000>;
122 interrupts = <0 89 IRQ_TYPE_LEVEL_HIGH>;
123 clocks = <&clks IMX6QDL_CLK_IPG>;
124 clock-names = "ipg";
125
126 pgc {
127 #address-cells = <1>;
128 #size-cells = <0>;
129
130 power-domain@0 {
131 reg = <0>;
132 #power-domain-cells = <0>;
133 };
134
135 pd_pu: power-domain@1 {
136 reg = <1>;
137 #power-domain-cells = <0>;
138 power-supply = <®_pu>;
139 clocks = <&clks IMX6QDL_CLK_GPU3D_CORE>,
140 <&clks IMX6QDL_CLK_GPU3D_SHADER>,
141 <&clks IMX6QDL_CLK_GPU2D_CORE>,
142 <&clks IMX6QDL_CLK_GPU2D_AXI>,
143 <&clks IMX6QDL_CLK_OPENVG_AXI>,
144 <&clks IMX6QDL_CLK_VPU_AXI>;
145 };
146 };
147 };
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