| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: GPL-2.0-only |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/regulator/maxim,max8973.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Maxim MAX8973/MAX77621 voltage regulator |
| 8 | |
| 9 | maintainers: |
| 10 | - Krzysztof Kozlowski <krzk@kernel.org> |
| 11 | |
| 12 | allOf: |
| 13 | - $ref: regulator.yaml# |
| 14 | |
| 15 | properties: |
| 16 | compatible: |
| 17 | enum: |
| 18 | - maxim,max8973 |
| 19 | - maxim,max77621 |
| 20 | |
| 21 | junction-warn-millicelsius: |
| 22 | description: | |
| 23 | Junction warning temperature threshold in millicelsius. If die |
| 24 | temperature crosses this level then device generates the warning |
| 25 | interrupts. |
| 26 | Please note that thermal functionality is only supported on MAX77621. The |
| 27 | supported threshold warning temperature for MAX77621 are 120 degC and 140 |
| 28 | degC. |
| 29 | |
| 30 | maxim,dvs-gpio: |
| 31 | maxItems: 1 |
| 32 | description: | |
| 33 | GPIO which is connected to DVS pin of device. |
| 34 | |
| 35 | maxim,dvs-default-state: |
| 36 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 37 | enum: [0, 1] |
| 38 | description: | |
| 39 | Default state of GPIO during initialisation. |
| 40 | 1 for HIGH and 0 for LOW. |
| 41 | |
| 42 | maxim,externally-enable: |
| 43 | type: boolean |
| 44 | description: | |
| 45 | Externally control the regulator output enable/disable. |
| 46 | |
| 47 | maxim,enable-gpio: |
| 48 | maxItems: 1 |
| 49 | description: | |
| 50 | GPIO for enable control. If the valid GPIO is provided then externally |
| 51 | enable control will be considered. |
| 52 | |
| 53 | maxim,enable-remote-sense: |
| 54 | type: boolean |
| 55 | description: Enable remote sense. |
| 56 | |
| 57 | maxim,enable-falling-slew-rate: |
| 58 | type: boolean |
| 59 | description: Enable falling slew rate. |
| 60 | |
| 61 | maxim,enable-active-discharge: |
| 62 | type: boolean |
| 63 | description: Eable active discharge. |
| 64 | |
| 65 | maxim,enable-frequency-shift: |
| 66 | type: boolean |
| 67 | description: Enable 9% frequency shift. |
| 68 | |
| 69 | maxim,enable-bias-control: |
| 70 | type: boolean |
| 71 | description: | |
| 72 | Enable bias control which can reduce the startup delay to 20us from 220us. |
| 73 | |
| 74 | maxim,enable-etr: |
| 75 | type: boolean |
| 76 | description: Enable Enhanced Transient Response. |
| 77 | |
| 78 | maxim,enable-high-etr-sensitivity: |
| 79 | type: boolean |
| 80 | description: | |
| 81 | Enhanced transient response circuit is enabled and set for high |
| 82 | sensitivity. If this property is available then etr will be enable |
| 83 | default. |
| 84 | Enhanced transient response (ETR) will affect the configuration of CKADV. |
| 85 | |
| 86 | reg: |
| 87 | maxItems: 1 |
| 88 | |
| 89 | interrupts: |
| 90 | maxItems: 1 |
| 91 | |
| 92 | required: |
| 93 | - compatible |
| 94 | - reg |
| 95 | |
| 96 | unevaluatedProperties: false |
| 97 | |
| 98 | examples: |
| 99 | - | |
| 100 | i2c { |
| 101 | #address-cells = <1>; |
| 102 | #size-cells = <0>; |
| 103 | |
| 104 | regulator@1b { |
| 105 | compatible = "maxim,max8973"; |
| 106 | reg = <0x1b>; |
| 107 | |
| 108 | regulator-min-microvolt = <935000>; |
| 109 | regulator-max-microvolt = <1200000>; |
| 110 | regulator-boot-on; |
| 111 | regulator-always-on; |
| 112 | }; |
| 113 | }; |
| 114 | |
| 115 | - | |
| 116 | #include <dt-bindings/gpio/gpio.h> |
| 117 | #include <dt-bindings/interrupt-controller/irq.h> |
| 118 | |
| 119 | i2c { |
| 120 | #address-cells = <1>; |
| 121 | #size-cells = <0>; |
| 122 | |
| 123 | regulator@1b { |
| 124 | compatible = "maxim,max77621"; |
| 125 | reg = <0x1b>; |
| 126 | interrupts = <1 IRQ_TYPE_LEVEL_LOW>; |
| 127 | |
| 128 | regulator-always-on; |
| 129 | regulator-boot-on; |
| 130 | regulator-min-microvolt = <800000>; |
| 131 | regulator-max-microvolt = <1231250>; |
| 132 | regulator-name = "PPVAR_CPU"; |
| 133 | regulator-ramp-delay = <12500>; |
| 134 | maxim,dvs-default-state = <1>; |
| 135 | maxim,enable-active-discharge; |
| 136 | maxim,enable-bias-control; |
| 137 | maxim,enable-etr; |
| 138 | maxim,enable-gpio = <&pmic 5 GPIO_ACTIVE_HIGH>; |
| 139 | maxim,externally-enable; |
| 140 | }; |
| 141 | }; |