| Tom Rini | 6b642ac | 2024-10-01 12:20:28 -0600 | [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/mfd/rohm,bd96801-pmic.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: ROHM BD96801 Scalable Power Management Integrated Circuit |
| 8 | |
| 9 | maintainers: |
| 10 | - Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com> |
| 11 | |
| 12 | description: |
| 13 | BD96801 is an automotive grade single-chip power management IC. |
| 14 | It integrates 4 buck converters and 3 LDOs with safety features like |
| 15 | over-/under voltage and over current detection and a watchdog. |
| 16 | |
| 17 | properties: |
| 18 | compatible: |
| 19 | const: rohm,bd96801 |
| 20 | |
| 21 | reg: |
| 22 | maxItems: 1 |
| 23 | |
| 24 | interrupts: |
| 25 | description: |
| 26 | The PMIC provides intb and errb IRQ lines. The errb IRQ line is used |
| 27 | for fatal IRQs which will cause the PMIC to shut down power outputs. |
| 28 | In many systems this will shut down the SoC contolling the PMIC and |
| 29 | connecting/handling the errb can be omitted. However, there are cases |
| 30 | where the SoC is not powered by the PMIC or has a short time backup |
| 31 | energy to handle shutdown of critical hardware. In that case it may be |
| 32 | useful to connect the errb and handle errb events. |
| 33 | minItems: 1 |
| 34 | maxItems: 2 |
| 35 | |
| 36 | interrupt-names: |
| 37 | minItems: 1 |
| 38 | items: |
| 39 | - enum: [intb, errb] |
| 40 | - const: errb |
| 41 | |
| 42 | rohm,hw-timeout-ms: |
| 43 | description: |
| 44 | Watchdog timeout value(s). First walue is timeout limit. Second value is |
| 45 | optional value for 'too early' watchdog ping if window timeout mode is |
| 46 | to be used. |
| 47 | minItems: 1 |
| 48 | maxItems: 2 |
| 49 | |
| 50 | rohm,wdg-action: |
| 51 | description: |
| 52 | Whether the watchdog failure must turn off the regulator power outputs or |
| 53 | just toggle the INTB line. |
| 54 | enum: |
| 55 | - prstb |
| 56 | - intb-only |
| 57 | |
| 58 | timeout-sec: |
| 59 | maxItems: 2 |
| 60 | |
| 61 | regulators: |
| 62 | $ref: /schemas/regulator/rohm,bd96801-regulator.yaml |
| 63 | description: |
| 64 | List of child nodes that specify the regulators. |
| 65 | |
| 66 | required: |
| 67 | - compatible |
| 68 | - reg |
| 69 | - interrupts |
| 70 | - interrupt-names |
| 71 | - regulators |
| 72 | |
| 73 | additionalProperties: false |
| 74 | |
| 75 | examples: |
| 76 | - | |
| 77 | #include <dt-bindings/interrupt-controller/irq.h> |
| 78 | #include <dt-bindings/leds/common.h> |
| 79 | i2c { |
| 80 | #address-cells = <1>; |
| 81 | #size-cells = <0>; |
| 82 | pmic: pmic@60 { |
| 83 | reg = <0x60>; |
| 84 | compatible = "rohm,bd96801"; |
| 85 | interrupt-parent = <&gpio1>; |
| 86 | interrupts = <29 IRQ_TYPE_LEVEL_LOW>, <6 IRQ_TYPE_LEVEL_LOW>; |
| 87 | interrupt-names = "intb", "errb"; |
| 88 | |
| 89 | regulators { |
| 90 | buck1 { |
| 91 | regulator-name = "buck1"; |
| 92 | regulator-ramp-delay = <1250>; |
| 93 | /* 0.5V min INITIAL - 150 mV tune */ |
| 94 | regulator-min-microvolt = <350000>; |
| 95 | /* 3.3V + 150mV tune */ |
| 96 | regulator-max-microvolt = <3450000>; |
| 97 | |
| 98 | /* These can be set only when PMIC is in STBY */ |
| 99 | rohm,initial-voltage-microvolt = <500000>; |
| 100 | regulator-ov-error-microvolt = <230000>; |
| 101 | regulator-uv-error-microvolt = <230000>; |
| 102 | regulator-temp-protection-kelvin = <1>; |
| 103 | regulator-temp-warn-kelvin = <0>; |
| 104 | }; |
| 105 | buck2 { |
| 106 | regulator-name = "buck2"; |
| 107 | regulator-min-microvolt = <350000>; |
| 108 | regulator-max-microvolt = <3450000>; |
| 109 | |
| 110 | rohm,initial-voltage-microvolt = <3000000>; |
| 111 | regulator-ov-error-microvolt = <18000>; |
| 112 | regulator-uv-error-microvolt = <18000>; |
| 113 | regulator-temp-protection-kelvin = <1>; |
| 114 | regulator-temp-warn-kelvin = <1>; |
| 115 | }; |
| 116 | buck3 { |
| 117 | regulator-name = "buck3"; |
| 118 | regulator-min-microvolt = <350000>; |
| 119 | regulator-max-microvolt = <3450000>; |
| 120 | |
| 121 | rohm,initial-voltage-microvolt = <600000>; |
| 122 | regulator-ov-warn-microvolt = <18000>; |
| 123 | regulator-uv-warn-microvolt = <18000>; |
| 124 | regulator-temp-protection-kelvin = <1>; |
| 125 | regulator-temp-error-kelvin = <0>; |
| 126 | }; |
| 127 | buck4 { |
| 128 | regulator-name = "buck4"; |
| 129 | regulator-min-microvolt = <350000>; |
| 130 | regulator-max-microvolt = <3450000>; |
| 131 | |
| 132 | rohm,initial-voltage-microvolt = <600000>; |
| 133 | regulator-ov-warn-microvolt = <18000>; |
| 134 | regulator-uv-warn-microvolt = <18000>; |
| 135 | regulator-temp-protection-kelvin = <1>; |
| 136 | regulator-temp-error-kelvin = <0>; |
| 137 | }; |
| 138 | ldo5 { |
| 139 | regulator-name = "ldo5"; |
| 140 | regulator-min-microvolt = <300000>; |
| 141 | regulator-max-microvolt = <3300000>; |
| 142 | |
| 143 | rohm,initial-voltage-microvolt = <500000>; |
| 144 | regulator-ov-error-microvolt = <36000>; |
| 145 | regulator-uv-error-microvolt = <34000>; |
| 146 | regulator-temp-protection-kelvin = <1>; |
| 147 | regulator-temp-warn-kelvin = <0>; |
| 148 | }; |
| 149 | ldo6 { |
| 150 | regulator-name = "ldo6"; |
| 151 | regulator-min-microvolt = <300000>; |
| 152 | regulator-max-microvolt = <3300000>; |
| 153 | |
| 154 | rohm,initial-voltage-microvolt = <300000>; |
| 155 | regulator-ov-error-microvolt = <36000>; |
| 156 | regulator-uv-error-microvolt = <34000>; |
| 157 | regulator-temp-protection-kelvin = <1>; |
| 158 | regulator-temp-warn-kelvin = <0>; |
| 159 | }; |
| 160 | ldo7 { |
| 161 | regulator-name = "ldo7"; |
| 162 | regulator-min-microvolt = <300000>; |
| 163 | regulator-max-microvolt = <3300000>; |
| 164 | |
| 165 | rohm,initial-voltage-microvolt = <500000>; |
| 166 | regulator-ov-error-microvolt = <36000>; |
| 167 | regulator-uv-error-microvolt = <34000>; |
| 168 | regulator-temp-protection-kelvin = <1>; |
| 169 | regulator-temp-warn-kelvin = <0>; |
| 170 | }; |
| 171 | }; |
| 172 | }; |
| 173 | }; |