| 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/mfd/rohm,bd71837-pmic.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: ROHM BD71837 Power Management Integrated Circuit |
| 8 | |
| 9 | maintainers: |
| 10 | - Matti Vaittinen <mazziesaccount@gmail.com> |
| 11 | |
| 12 | description: | |
| 13 | BD71837MWV is programmable Power Management ICs for powering single-core, |
| 14 | dual-core, and quad-core SoCs such as NXP-i.MX 8M. It is optimized for low |
| 15 | BOM cost and compact solution footprint. BD71837MWV integrates 8 Buck |
| 16 | regulators and 7 LDOs. |
| 17 | Datasheet for BD71837 is available at |
| 18 | https://www.rohm.com/products/power-management/power-management-ic-for-system/industrial-consumer-applications/nxp-imx/bd71837amwv-product |
| 19 | |
| 20 | properties: |
| 21 | compatible: |
| 22 | const: rohm,bd71837 |
| 23 | |
| 24 | reg: |
| 25 | description: |
| 26 | I2C slave address. |
| 27 | maxItems: 1 |
| 28 | |
| 29 | interrupts: |
| 30 | maxItems: 1 |
| 31 | |
| 32 | clocks: |
| 33 | maxItems: 1 |
| 34 | |
| 35 | clock-names: |
| 36 | const: osc |
| 37 | |
| 38 | "#clock-cells": |
| 39 | const: 0 |
| 40 | |
| 41 | clock-output-names: |
| 42 | const: pmic_clk |
| 43 | |
| 44 | # The BD718x7 supports two different HW states as reset target states. States |
| 45 | # are called as SNVS and READY. At READY state all the PMIC power outputs go |
| 46 | # down and OTP is reload. At the SNVS state all other logic and external |
| 47 | # devices apart from the SNVS power domain are shut off. Please refer to NXP |
| 48 | # i.MX8 documentation for further information regarding SNVS state. When a |
| 49 | # reset is done via SNVS state the PMIC OTP data is not reload. This causes |
| 50 | # power outputs that have been under SW control to stay down when reset has |
| 51 | # switched power state to SNVS. If reset is done via READY state the power |
| 52 | # outputs will be returned to HW control by OTP loading. Thus the reset |
| 53 | # target state is set to READY by default. If SNVS state is used the boot |
| 54 | # crucial regulators must have the regulator-always-on and regulator-boot-on |
| 55 | # properties set in regulator node. |
| 56 | |
| 57 | rohm,reset-snvs-powered: |
| 58 | description: | |
| 59 | Transfer PMIC to SNVS state at reset |
| 60 | type: boolean |
| 61 | |
| 62 | # Configure the "short press" and "long press" timers for the power button. |
| 63 | # Values are rounded to what hardware supports |
| 64 | # Short-press: |
| 65 | # Shortest being 10ms, next 500ms and then multiple of 500ms up to 7,5s |
| 66 | # Long-press: |
| 67 | # Shortest being 10ms, next 1000ms and then multiple of 1000ms up to 15s |
| 68 | # If these properties are not present the existing configuration (from |
| 69 | # bootloader or OTP) is not touched. |
| 70 | |
| 71 | rohm,short-press-ms: |
| 72 | description: |
| 73 | Short press duration in milliseconds |
| 74 | enum: |
| 75 | - 10 |
| 76 | - 500 |
| 77 | - 1000 |
| 78 | - 1500 |
| 79 | - 2000 |
| 80 | - 2500 |
| 81 | - 3000 |
| 82 | - 3500 |
| 83 | - 4000 |
| 84 | - 4500 |
| 85 | - 5000 |
| 86 | - 5500 |
| 87 | - 6000 |
| 88 | - 6500 |
| 89 | - 7000 |
| 90 | |
| 91 | rohm,long-press-ms: |
| 92 | description: |
| 93 | Long press duration in milliseconds |
| 94 | enum: |
| 95 | - 10 |
| 96 | - 1000 |
| 97 | - 2000 |
| 98 | - 3000 |
| 99 | - 4000 |
| 100 | - 5000 |
| 101 | - 6000 |
| 102 | - 7000 |
| 103 | - 8000 |
| 104 | - 9000 |
| 105 | - 10000 |
| 106 | - 11000 |
| 107 | - 12000 |
| 108 | - 13000 |
| 109 | - 14000 |
| 110 | |
| 111 | regulators: |
| 112 | $ref: ../regulator/rohm,bd71837-regulator.yaml |
| 113 | description: |
| 114 | List of child nodes that specify the regulators. |
| 115 | |
| 116 | required: |
| 117 | - compatible |
| 118 | - reg |
| 119 | - interrupts |
| 120 | - clocks |
| 121 | - "#clock-cells" |
| 122 | - regulators |
| 123 | |
| 124 | additionalProperties: false |
| 125 | |
| 126 | examples: |
| 127 | - | |
| 128 | #include <dt-bindings/interrupt-controller/irq.h> |
| 129 | #include <dt-bindings/leds/common.h> |
| 130 | |
| 131 | i2c { |
| 132 | #address-cells = <1>; |
| 133 | #size-cells = <0>; |
| 134 | pmic: pmic@4b { |
| 135 | compatible = "rohm,bd71837"; |
| 136 | reg = <0x4b>; |
| 137 | interrupt-parent = <&gpio1>; |
| 138 | interrupts = <29 IRQ_TYPE_LEVEL_LOW>; |
| 139 | #clock-cells = <0>; |
| 140 | clocks = <&osc 0>; |
| 141 | rohm,reset-snvs-powered; |
| 142 | rohm,short-press-ms = <10>; |
| 143 | rohm,long-press-ms = <2000>; |
| 144 | |
| 145 | regulators { |
| 146 | buck1: BUCK1 { |
| 147 | regulator-name = "buck1"; |
| 148 | regulator-min-microvolt = <700000>; |
| 149 | regulator-max-microvolt = <1300000>; |
| 150 | regulator-boot-on; |
| 151 | regulator-always-on; |
| 152 | regulator-ramp-delay = <1250>; |
| 153 | rohm,dvs-run-voltage = <900000>; |
| 154 | rohm,dvs-idle-voltage = <850000>; |
| 155 | rohm,dvs-suspend-voltage = <800000>; |
| 156 | }; |
| 157 | buck2: BUCK2 { |
| 158 | regulator-name = "buck2"; |
| 159 | regulator-min-microvolt = <700000>; |
| 160 | regulator-max-microvolt = <1300000>; |
| 161 | regulator-boot-on; |
| 162 | regulator-always-on; |
| 163 | regulator-ramp-delay = <1250>; |
| 164 | rohm,dvs-run-voltage = <1000000>; |
| 165 | rohm,dvs-idle-voltage = <900000>; |
| 166 | }; |
| 167 | buck3: BUCK3 { |
| 168 | regulator-name = "buck3"; |
| 169 | regulator-min-microvolt = <700000>; |
| 170 | regulator-max-microvolt = <1300000>; |
| 171 | regulator-boot-on; |
| 172 | rohm,dvs-run-voltage = <1000000>; |
| 173 | }; |
| 174 | buck4: BUCK4 { |
| 175 | regulator-name = "buck4"; |
| 176 | regulator-min-microvolt = <700000>; |
| 177 | regulator-max-microvolt = <1300000>; |
| 178 | regulator-boot-on; |
| 179 | rohm,dvs-run-voltage = <1000000>; |
| 180 | }; |
| 181 | buck5: BUCK5 { |
| 182 | regulator-name = "buck5"; |
| 183 | regulator-min-microvolt = <700000>; |
| 184 | regulator-max-microvolt = <1350000>; |
| 185 | regulator-boot-on; |
| 186 | }; |
| 187 | buck6: BUCK6 { |
| 188 | regulator-name = "buck6"; |
| 189 | regulator-min-microvolt = <3000000>; |
| 190 | regulator-max-microvolt = <3300000>; |
| 191 | regulator-boot-on; |
| 192 | }; |
| 193 | buck7: BUCK7 { |
| 194 | regulator-name = "buck7"; |
| 195 | regulator-min-microvolt = <1605000>; |
| 196 | regulator-max-microvolt = <1995000>; |
| 197 | regulator-boot-on; |
| 198 | }; |
| 199 | buck8: BUCK8 { |
| 200 | regulator-name = "buck8"; |
| 201 | regulator-min-microvolt = <800000>; |
| 202 | regulator-max-microvolt = <1400000>; |
| 203 | }; |
| 204 | |
| 205 | ldo1: LDO1 { |
| 206 | regulator-name = "ldo1"; |
| 207 | regulator-min-microvolt = <3000000>; |
| 208 | regulator-max-microvolt = <3300000>; |
| 209 | regulator-boot-on; |
| 210 | }; |
| 211 | ldo2: LDO2 { |
| 212 | regulator-name = "ldo2"; |
| 213 | regulator-min-microvolt = <900000>; |
| 214 | regulator-max-microvolt = <900000>; |
| 215 | regulator-boot-on; |
| 216 | }; |
| 217 | ldo3: LDO3 { |
| 218 | regulator-name = "ldo3"; |
| 219 | regulator-min-microvolt = <1800000>; |
| 220 | regulator-max-microvolt = <3300000>; |
| 221 | }; |
| 222 | ldo4: LDO4 { |
| 223 | regulator-name = "ldo4"; |
| 224 | regulator-min-microvolt = <900000>; |
| 225 | regulator-max-microvolt = <1800000>; |
| 226 | }; |
| 227 | ldo5: LDO5 { |
| 228 | regulator-name = "ldo5"; |
| 229 | regulator-min-microvolt = <1800000>; |
| 230 | regulator-max-microvolt = <3300000>; |
| 231 | }; |
| 232 | ldo6: LDO6 { |
| 233 | regulator-name = "ldo6"; |
| 234 | regulator-min-microvolt = <900000>; |
| 235 | regulator-max-microvolt = <1800000>; |
| 236 | }; |
| 237 | ldo7_reg: LDO7 { |
| 238 | regulator-name = "ldo7"; |
| 239 | regulator-min-microvolt = <1800000>; |
| 240 | regulator-max-microvolt = <3300000>; |
| 241 | }; |
| 242 | }; |
| 243 | }; |
| 244 | }; |