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-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 | }; |