| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: GPL-2.0 |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/regulator/fixed-regulator.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Fixed Voltage regulators |
| 8 | |
| 9 | maintainers: |
| 10 | - Liam Girdwood <lgirdwood@gmail.com> |
| 11 | - Mark Brown <broonie@kernel.org> |
| 12 | |
| 13 | description: |
| 14 | Any property defined as part of the core regulator binding, defined in |
| 15 | regulator.yaml, can also be used. However a fixed voltage regulator is |
| 16 | expected to have the regulator-min-microvolt and regulator-max-microvolt |
| 17 | to be the same. |
| 18 | |
| 19 | allOf: |
| 20 | - $ref: regulator.yaml# |
| 21 | - if: |
| 22 | properties: |
| 23 | compatible: |
| 24 | contains: |
| 25 | const: regulator-fixed-clock |
| 26 | then: |
| 27 | required: |
| 28 | - clocks |
| 29 | - if: |
| 30 | properties: |
| 31 | compatible: |
| 32 | contains: |
| 33 | const: regulator-fixed-domain |
| 34 | then: |
| 35 | required: |
| 36 | - power-domains |
| 37 | - required-opps |
| 38 | - not: |
| 39 | required: |
| 40 | - gpio |
| 41 | - gpios |
| 42 | |
| 43 | properties: |
| 44 | compatible: |
| 45 | enum: |
| 46 | - regulator-fixed |
| 47 | - regulator-fixed-clock |
| 48 | - regulator-fixed-domain |
| 49 | |
| 50 | regulator-name: true |
| 51 | |
| 52 | gpio: |
| 53 | description: gpio to use for enable control |
| 54 | maxItems: 1 |
| 55 | |
| 56 | gpios: |
| 57 | maxItems: 1 |
| 58 | |
| 59 | clocks: |
| 60 | description: |
| 61 | clock to use for enable control. This binding is only available if |
| 62 | the compatible is chosen to regulator-fixed-clock. The clock binding |
| 63 | is mandatory if compatible is chosen to regulator-fixed-clock. |
| 64 | maxItems: 1 |
| 65 | |
| 66 | power-domains: |
| 67 | deprecated: true |
| 68 | description: |
| 69 | Power domain to use for enable control. This binding is only |
| 70 | available if the compatible is chosen to regulator-fixed-domain. |
| 71 | maxItems: 1 |
| 72 | |
| 73 | required-opps: |
| 74 | deprecated: true |
| 75 | description: |
| 76 | Performance state to use for enable control. This binding is only |
| 77 | available if the compatible is chosen to regulator-fixed-domain. The |
| 78 | power-domain binding is mandatory if compatible is chosen to |
| 79 | regulator-fixed-domain. |
| 80 | maxItems: 1 |
| 81 | |
| 82 | startup-delay-us: |
| 83 | description: startup time in microseconds |
| 84 | |
| 85 | off-on-delay-us: |
| 86 | description: off delay time in microseconds |
| 87 | |
| 88 | enable-active-high: |
| 89 | description: |
| 90 | Polarity of GPIO is Active high. If this property is missing, |
| 91 | the default assumed is Active low. |
| 92 | type: boolean |
| 93 | |
| 94 | gpio-open-drain: |
| 95 | description: |
| 96 | GPIO is open drain type. If this property is missing then default |
| 97 | assumption is false. |
| 98 | type: boolean |
| 99 | |
| 100 | vin-supply: |
| 101 | description: Input supply phandle. |
| 102 | |
| 103 | interrupts: |
| 104 | maxItems: 1 |
| 105 | description: |
| 106 | Interrupt signaling a critical under-voltage event. |
| 107 | |
| Tom Rini | 93743d2 | 2024-04-01 09:08:13 -0400 | [diff] [blame^] | 108 | system-critical-regulator: true |
| 109 | |
| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 110 | required: |
| 111 | - compatible |
| 112 | - regulator-name |
| 113 | |
| 114 | unevaluatedProperties: false |
| 115 | |
| 116 | examples: |
| 117 | - | |
| 118 | reg_1v8: regulator-1v8 { |
| 119 | compatible = "regulator-fixed"; |
| 120 | regulator-name = "1v8"; |
| 121 | regulator-min-microvolt = <1800000>; |
| 122 | regulator-max-microvolt = <1800000>; |
| 123 | gpio = <&gpio1 16 0>; |
| 124 | startup-delay-us = <70000>; |
| 125 | enable-active-high; |
| 126 | regulator-boot-on; |
| 127 | gpio-open-drain; |
| 128 | vin-supply = <&parent_reg>; |
| 129 | }; |
| 130 | reg_1v8_clk: regulator-1v8-clk { |
| 131 | compatible = "regulator-fixed-clock"; |
| 132 | regulator-name = "1v8"; |
| 133 | regulator-min-microvolt = <1800000>; |
| 134 | regulator-max-microvolt = <1800000>; |
| 135 | clocks = <&clock1>; |
| 136 | startup-delay-us = <70000>; |
| 137 | enable-active-high; |
| 138 | regulator-boot-on; |
| 139 | vin-supply = <&parent_reg>; |
| 140 | }; |
| 141 | reg_1v8_domain: regulator-1v8-domain { |
| 142 | compatible = "regulator-fixed-domain"; |
| 143 | regulator-name = "1v8"; |
| 144 | regulator-min-microvolt = <1800000>; |
| 145 | regulator-max-microvolt = <1800000>; |
| 146 | power-domains = <&domain1>; |
| 147 | required-opps = <&domain1_state1>; |
| 148 | startup-delay-us = <70000>; |
| 149 | enable-active-high; |
| 150 | regulator-boot-on; |
| 151 | vin-supply = <&parent_reg>; |
| 152 | }; |
| 153 | ... |