Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame^] | 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 | }; |