| # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/mfd/rohm,bd96801-pmic.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: ROHM BD96801 Scalable Power Management Integrated Circuit |
| |
| maintainers: |
| - Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com> |
| |
| description: |
| BD96801 is an automotive grade single-chip power management IC. |
| It integrates 4 buck converters and 3 LDOs with safety features like |
| over-/under voltage and over current detection and a watchdog. |
| |
| properties: |
| compatible: |
| const: rohm,bd96801 |
| |
| reg: |
| maxItems: 1 |
| |
| interrupts: |
| description: |
| The PMIC provides intb and errb IRQ lines. The errb IRQ line is used |
| for fatal IRQs which will cause the PMIC to shut down power outputs. |
| In many systems this will shut down the SoC contolling the PMIC and |
| connecting/handling the errb can be omitted. However, there are cases |
| where the SoC is not powered by the PMIC or has a short time backup |
| energy to handle shutdown of critical hardware. In that case it may be |
| useful to connect the errb and handle errb events. |
| minItems: 1 |
| maxItems: 2 |
| |
| interrupt-names: |
| minItems: 1 |
| items: |
| - enum: [intb, errb] |
| - const: errb |
| |
| rohm,hw-timeout-ms: |
| description: |
| Watchdog timeout value(s). First walue is timeout limit. Second value is |
| optional value for 'too early' watchdog ping if window timeout mode is |
| to be used. |
| minItems: 1 |
| maxItems: 2 |
| |
| rohm,wdg-action: |
| description: |
| Whether the watchdog failure must turn off the regulator power outputs or |
| just toggle the INTB line. |
| enum: |
| - prstb |
| - intb-only |
| |
| timeout-sec: |
| maxItems: 2 |
| |
| regulators: |
| $ref: /schemas/regulator/rohm,bd96801-regulator.yaml |
| description: |
| List of child nodes that specify the regulators. |
| |
| required: |
| - compatible |
| - reg |
| - interrupts |
| - interrupt-names |
| - regulators |
| |
| additionalProperties: false |
| |
| examples: |
| - | |
| #include <dt-bindings/interrupt-controller/irq.h> |
| #include <dt-bindings/leds/common.h> |
| i2c { |
| #address-cells = <1>; |
| #size-cells = <0>; |
| pmic: pmic@60 { |
| reg = <0x60>; |
| compatible = "rohm,bd96801"; |
| interrupt-parent = <&gpio1>; |
| interrupts = <29 IRQ_TYPE_LEVEL_LOW>, <6 IRQ_TYPE_LEVEL_LOW>; |
| interrupt-names = "intb", "errb"; |
| |
| regulators { |
| buck1 { |
| regulator-name = "buck1"; |
| regulator-ramp-delay = <1250>; |
| /* 0.5V min INITIAL - 150 mV tune */ |
| regulator-min-microvolt = <350000>; |
| /* 3.3V + 150mV tune */ |
| regulator-max-microvolt = <3450000>; |
| |
| /* These can be set only when PMIC is in STBY */ |
| rohm,initial-voltage-microvolt = <500000>; |
| regulator-ov-error-microvolt = <230000>; |
| regulator-uv-error-microvolt = <230000>; |
| regulator-temp-protection-kelvin = <1>; |
| regulator-temp-warn-kelvin = <0>; |
| }; |
| buck2 { |
| regulator-name = "buck2"; |
| regulator-min-microvolt = <350000>; |
| regulator-max-microvolt = <3450000>; |
| |
| rohm,initial-voltage-microvolt = <3000000>; |
| regulator-ov-error-microvolt = <18000>; |
| regulator-uv-error-microvolt = <18000>; |
| regulator-temp-protection-kelvin = <1>; |
| regulator-temp-warn-kelvin = <1>; |
| }; |
| buck3 { |
| regulator-name = "buck3"; |
| regulator-min-microvolt = <350000>; |
| regulator-max-microvolt = <3450000>; |
| |
| rohm,initial-voltage-microvolt = <600000>; |
| regulator-ov-warn-microvolt = <18000>; |
| regulator-uv-warn-microvolt = <18000>; |
| regulator-temp-protection-kelvin = <1>; |
| regulator-temp-error-kelvin = <0>; |
| }; |
| buck4 { |
| regulator-name = "buck4"; |
| regulator-min-microvolt = <350000>; |
| regulator-max-microvolt = <3450000>; |
| |
| rohm,initial-voltage-microvolt = <600000>; |
| regulator-ov-warn-microvolt = <18000>; |
| regulator-uv-warn-microvolt = <18000>; |
| regulator-temp-protection-kelvin = <1>; |
| regulator-temp-error-kelvin = <0>; |
| }; |
| ldo5 { |
| regulator-name = "ldo5"; |
| regulator-min-microvolt = <300000>; |
| regulator-max-microvolt = <3300000>; |
| |
| rohm,initial-voltage-microvolt = <500000>; |
| regulator-ov-error-microvolt = <36000>; |
| regulator-uv-error-microvolt = <34000>; |
| regulator-temp-protection-kelvin = <1>; |
| regulator-temp-warn-kelvin = <0>; |
| }; |
| ldo6 { |
| regulator-name = "ldo6"; |
| regulator-min-microvolt = <300000>; |
| regulator-max-microvolt = <3300000>; |
| |
| rohm,initial-voltage-microvolt = <300000>; |
| regulator-ov-error-microvolt = <36000>; |
| regulator-uv-error-microvolt = <34000>; |
| regulator-temp-protection-kelvin = <1>; |
| regulator-temp-warn-kelvin = <0>; |
| }; |
| ldo7 { |
| regulator-name = "ldo7"; |
| regulator-min-microvolt = <300000>; |
| regulator-max-microvolt = <3300000>; |
| |
| rohm,initial-voltage-microvolt = <500000>; |
| regulator-ov-error-microvolt = <36000>; |
| regulator-uv-error-microvolt = <34000>; |
| regulator-temp-protection-kelvin = <1>; |
| regulator-temp-warn-kelvin = <0>; |
| }; |
| }; |
| }; |
| }; |
