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| 1 | +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause |
| 2 | +%YAML 1.2 |
| 3 | +--- |
| 4 | +$id: http://devicetree.org/schemas/regulator/maxim,max8952.yaml# |
| 5 | +$schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | + |
| 7 | +title: Maxim MAX8952 voltage regulator |
| 8 | + |
| 9 | +maintainers: |
| 10 | + - Krzysztof Kozlowski <[email protected]> |
| 11 | + |
| 12 | +allOf: |
| 13 | + - $ref: regulator.yaml# |
| 14 | + |
| 15 | +properties: |
| 16 | + compatible: |
| 17 | + const: maxim,max8952 |
| 18 | + |
| 19 | + max8952,default-mode: |
| 20 | + $ref: /schemas/types.yaml#/definitions/uint32 |
| 21 | + enum: [0, 1, 2, 3] |
| 22 | + description: | |
| 23 | + index of default DVS voltage |
| 24 | +
|
| 25 | + max8952,dvs-mode-microvolt: |
| 26 | + minItems: 4 |
| 27 | + maxItems: 4 |
| 28 | + items: |
| 29 | + minimum: 770000 |
| 30 | + maximum: 1400000 |
| 31 | + description: | |
| 32 | + Array of 4 integer values defining DVS voltages in microvolts. All values |
| 33 | + must be from range <770000, 1400000>. |
| 34 | +
|
| 35 | + max8952,en-gpio: |
| 36 | + maxItems: 1 |
| 37 | + description: | |
| 38 | + GPIO used to control enable status of regulator |
| 39 | +
|
| 40 | + max8952,ramp-speed: |
| 41 | + $ref: /schemas/types.yaml#/definitions/uint32 |
| 42 | + enum: [0, 1, 2, 3, 4, 5, 6, 7] |
| 43 | + default: 0 |
| 44 | + description: | |
| 45 | + Voltage ramp speed, values map to: |
| 46 | + - 0: 32mV/us |
| 47 | + - 1: 16mV/us |
| 48 | + - 2: 8mV/us |
| 49 | + - 3: 4mV/us |
| 50 | + - 4: 2mV/us |
| 51 | + - 5: 1mV/us |
| 52 | + - 6: 0.5mV/us |
| 53 | + - 7: 0.25mV/us |
| 54 | + Defaults to 32mV/us if not specified. |
| 55 | +
|
| 56 | + max8952,sync-freq: |
| 57 | + $ref: /schemas/types.yaml#/definitions/uint32 |
| 58 | + enum: [0, 1, 2] |
| 59 | + default: 0 |
| 60 | + description: | |
| 61 | + Sync frequency, values map to: |
| 62 | + - 0: 26 MHz |
| 63 | + - 1: 13 MHz |
| 64 | + - 2: 19.2 MHz |
| 65 | + Defaults to 26 MHz if not specified. |
| 66 | +
|
| 67 | + max8952,vid-gpios: |
| 68 | + minItems: 2 |
| 69 | + maxItems: 2 |
| 70 | + description: | |
| 71 | + Array of two GPIO pins used for DVS voltage selection |
| 72 | +
|
| 73 | + reg: |
| 74 | + maxItems: 1 |
| 75 | + |
| 76 | +required: |
| 77 | + - compatible |
| 78 | + - max8952,dvs-mode-microvolt |
| 79 | + - reg |
| 80 | + |
| 81 | +unevaluatedProperties: false |
| 82 | + |
| 83 | +examples: |
| 84 | + - | |
| 85 | + #include <dt-bindings/gpio/gpio.h> |
| 86 | +
|
| 87 | + i2c { |
| 88 | + #address-cells = <1>; |
| 89 | + #size-cells = <0>; |
| 90 | +
|
| 91 | + pmic@60 { |
| 92 | + compatible = "maxim,max8952"; |
| 93 | + reg = <0x60>; |
| 94 | +
|
| 95 | + max8952,vid-gpios = <&gpx0 3 GPIO_ACTIVE_HIGH>, |
| 96 | + <&gpx0 4 GPIO_ACTIVE_HIGH>; |
| 97 | + max8952,default-mode = <0>; |
| 98 | + max8952,dvs-mode-microvolt = <1250000>, <1200000>, |
| 99 | + <1050000>, <950000>; |
| 100 | + max8952,sync-freq = <0>; |
| 101 | + max8952,ramp-speed = <0>; |
| 102 | +
|
| 103 | + regulator-name = "VARM_1.2V_C210"; |
| 104 | + regulator-min-microvolt = <770000>; |
| 105 | + regulator-max-microvolt = <1400000>; |
| 106 | + regulator-always-on; |
| 107 | + regulator-boot-on; |
| 108 | + }; |
| 109 | + }; |
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