| # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/mfd/rohm,bd71837-pmic.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: ROHM BD71837 Power Management Integrated Circuit |
| |
| maintainers: |
| - Matti Vaittinen <mazziesaccount@gmail.com> |
| |
| description: | |
| BD71837MWV is programmable Power Management ICs for powering single-core, |
| dual-core, and quad-core SoCs such as NXP-i.MX 8M. It is optimized for low |
| BOM cost and compact solution footprint. BD71837MWV integrates 8 Buck |
| regulators and 7 LDOs. |
| Datasheet for BD71837 is available at |
| https://www.rohm.com/products/power-management/power-management-ic-for-system/industrial-consumer-applications/nxp-imx/bd71837amwv-product |
| |
| properties: |
| compatible: |
| const: rohm,bd71837 |
| |
| reg: |
| description: |
| I2C slave address. |
| maxItems: 1 |
| |
| interrupts: |
| maxItems: 1 |
| |
| clocks: |
| maxItems: 1 |
| |
| clock-names: |
| const: osc |
| |
| "#clock-cells": |
| const: 0 |
| |
| clock-output-names: |
| const: pmic_clk |
| |
| # The BD718x7 supports two different HW states as reset target states. States |
| # are called as SNVS and READY. At READY state all the PMIC power outputs go |
| # down and OTP is reload. At the SNVS state all other logic and external |
| # devices apart from the SNVS power domain are shut off. Please refer to NXP |
| # i.MX8 documentation for further information regarding SNVS state. When a |
| # reset is done via SNVS state the PMIC OTP data is not reload. This causes |
| # power outputs that have been under SW control to stay down when reset has |
| # switched power state to SNVS. If reset is done via READY state the power |
| # outputs will be returned to HW control by OTP loading. Thus the reset |
| # target state is set to READY by default. If SNVS state is used the boot |
| # crucial regulators must have the regulator-always-on and regulator-boot-on |
| # properties set in regulator node. |
| |
| rohm,reset-snvs-powered: |
| description: | |
| Transfer PMIC to SNVS state at reset |
| type: boolean |
| |
| # Configure the "short press" and "long press" timers for the power button. |
| # Values are rounded to what hardware supports |
| # Short-press: |
| # Shortest being 10ms, next 500ms and then multiple of 500ms up to 7,5s |
| # Long-press: |
| # Shortest being 10ms, next 1000ms and then multiple of 1000ms up to 15s |
| # If these properties are not present the existing configuration (from |
| # bootloader or OTP) is not touched. |
| |
| rohm,short-press-ms: |
| description: |
| Short press duration in milliseconds |
| enum: |
| - 10 |
| - 500 |
| - 1000 |
| - 1500 |
| - 2000 |
| - 2500 |
| - 3000 |
| - 3500 |
| - 4000 |
| - 4500 |
| - 5000 |
| - 5500 |
| - 6000 |
| - 6500 |
| - 7000 |
| |
| rohm,long-press-ms: |
| description: |
| Long press duration in milliseconds |
| enum: |
| - 10 |
| - 1000 |
| - 2000 |
| - 3000 |
| - 4000 |
| - 5000 |
| - 6000 |
| - 7000 |
| - 8000 |
| - 9000 |
| - 10000 |
| - 11000 |
| - 12000 |
| - 13000 |
| - 14000 |
| |
| regulators: |
| $ref: /schemas/regulator/rohm,bd71837-regulator.yaml |
| description: |
| List of child nodes that specify the regulators. |
| |
| required: |
| - compatible |
| - reg |
| - interrupts |
| - clocks |
| - "#clock-cells" |
| - 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@4b { |
| compatible = "rohm,bd71837"; |
| reg = <0x4b>; |
| interrupt-parent = <&gpio1>; |
| interrupts = <29 IRQ_TYPE_LEVEL_LOW>; |
| #clock-cells = <0>; |
| clocks = <&osc 0>; |
| rohm,reset-snvs-powered; |
| rohm,short-press-ms = <10>; |
| rohm,long-press-ms = <2000>; |
| |
| regulators { |
| buck1: BUCK1 { |
| regulator-name = "buck1"; |
| regulator-min-microvolt = <700000>; |
| regulator-max-microvolt = <1300000>; |
| regulator-boot-on; |
| regulator-always-on; |
| regulator-ramp-delay = <1250>; |
| rohm,dvs-run-voltage = <900000>; |
| rohm,dvs-idle-voltage = <850000>; |
| rohm,dvs-suspend-voltage = <800000>; |
| }; |
| buck2: BUCK2 { |
| regulator-name = "buck2"; |
| regulator-min-microvolt = <700000>; |
| regulator-max-microvolt = <1300000>; |
| regulator-boot-on; |
| regulator-always-on; |
| regulator-ramp-delay = <1250>; |
| rohm,dvs-run-voltage = <1000000>; |
| rohm,dvs-idle-voltage = <900000>; |
| }; |
| buck3: BUCK3 { |
| regulator-name = "buck3"; |
| regulator-min-microvolt = <700000>; |
| regulator-max-microvolt = <1300000>; |
| regulator-boot-on; |
| rohm,dvs-run-voltage = <1000000>; |
| }; |
| buck4: BUCK4 { |
| regulator-name = "buck4"; |
| regulator-min-microvolt = <700000>; |
| regulator-max-microvolt = <1300000>; |
| regulator-boot-on; |
| rohm,dvs-run-voltage = <1000000>; |
| }; |
| buck5: BUCK5 { |
| regulator-name = "buck5"; |
| regulator-min-microvolt = <700000>; |
| regulator-max-microvolt = <1350000>; |
| regulator-boot-on; |
| }; |
| buck6: BUCK6 { |
| regulator-name = "buck6"; |
| regulator-min-microvolt = <3000000>; |
| regulator-max-microvolt = <3300000>; |
| regulator-boot-on; |
| }; |
| buck7: BUCK7 { |
| regulator-name = "buck7"; |
| regulator-min-microvolt = <1605000>; |
| regulator-max-microvolt = <1995000>; |
| regulator-boot-on; |
| }; |
| buck8: BUCK8 { |
| regulator-name = "buck8"; |
| regulator-min-microvolt = <800000>; |
| regulator-max-microvolt = <1400000>; |
| }; |
| |
| ldo1: LDO1 { |
| regulator-name = "ldo1"; |
| regulator-min-microvolt = <3000000>; |
| regulator-max-microvolt = <3300000>; |
| regulator-boot-on; |
| }; |
| ldo2: LDO2 { |
| regulator-name = "ldo2"; |
| regulator-min-microvolt = <900000>; |
| regulator-max-microvolt = <900000>; |
| regulator-boot-on; |
| }; |
| ldo3: LDO3 { |
| regulator-name = "ldo3"; |
| regulator-min-microvolt = <1800000>; |
| regulator-max-microvolt = <3300000>; |
| }; |
| ldo4: LDO4 { |
| regulator-name = "ldo4"; |
| regulator-min-microvolt = <900000>; |
| regulator-max-microvolt = <1800000>; |
| }; |
| ldo5: LDO5 { |
| regulator-name = "ldo5"; |
| regulator-min-microvolt = <1800000>; |
| regulator-max-microvolt = <3300000>; |
| }; |
| ldo6: LDO6 { |
| regulator-name = "ldo6"; |
| regulator-min-microvolt = <900000>; |
| regulator-max-microvolt = <1800000>; |
| }; |
| ldo7_reg: LDO7 { |
| regulator-name = "ldo7"; |
| regulator-min-microvolt = <1800000>; |
| regulator-max-microvolt = <3300000>; |
| }; |
| }; |
| }; |
| }; |
