# 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 bindings maintainers: - Matti Vaittinen 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: ../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 #include 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>; }; }; }; };