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229 lines
7.2 KiB
229 lines
7.2 KiB
# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause |
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%YAML 1.2 |
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--- |
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$id: http://devicetree.org/schemas/mfd/rohm,bd71847-pmic.yaml# |
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$schema: http://devicetree.org/meta-schemas/core.yaml# |
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title: ROHM BD71847 and BD71850 Power Management Integrated Circuit bindings |
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maintainers: |
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- Matti Vaittinen <[email protected]> |
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description: | |
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BD71847AMWV and BD71850MWV are programmable Power Management ICs for powering |
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single-core, dual-core, and quad-core SoCs such as NXP-i.MX 8M. It is |
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optimized for low BOM cost and compact solution footprint. BD71847MWV and |
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BD71850MWV integrate 6 Buck regulators and 6 LDOs. |
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Datasheets are available at |
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https://www.rohm.com/products/power-management/power-management-ic-for-system/industrial-consumer-applications/nxp-imx/bd71847amwv-product |
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https://www.rohm.com/products/power-management/power-management-ic-for-system/industrial-consumer-applications/nxp-imx/bd71850mwv-product |
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properties: |
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compatible: |
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enum: |
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- rohm,bd71847 |
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- rohm,bd71850 |
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reg: |
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description: |
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I2C slave address. |
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maxItems: 1 |
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interrupts: |
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maxItems: 1 |
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clocks: |
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maxItems: 1 |
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"#clock-cells": |
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const: 0 |
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clock-output-names: |
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maxItems: 1 |
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# The BD71847 abd BD71850 support two different HW states as reset target |
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# states. States are called as SNVS and READY. At READY state all the PMIC |
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# power outputs go down and OTP is reload. At the SNVS state all other logic |
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# and external devices apart from the SNVS power domain are shut off. Please |
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# refer to NXP i.MX8 documentation for further information regarding SNVS |
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# state. When a reset is done via SNVS state the PMIC OTP data is not reload. |
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# This causes power outputs that have been under SW control to stay down when |
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# reset has switched power state to SNVS. If reset is done via READY state the |
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# power outputs will be returned to HW control by OTP loading. Thus the reset |
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# target state is set to READY by default. If SNVS state is used the boot |
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# crucial regulators must have the regulator-always-on and regulator-boot-on |
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# properties set in regulator node. |
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rohm,reset-snvs-powered: |
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description: |
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Transfer PMIC to SNVS state at reset. |
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type: boolean |
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# Configure the "short press" and "long press" timers for the power button. |
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# Values are rounded to what hardware supports |
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# Short-press: |
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# Shortest being 10ms, next 500ms and then multiple of 500ms up to 7,5s |
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# Long-press: |
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# Shortest being 10ms, next 1000ms and then multiple of 1000ms up to 15s |
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# If these properties are not present the existing # configuration (from |
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# bootloader or OTP) is not touched. |
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rohm,short-press-ms: |
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description: |
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Short press duration in milliseconds |
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enum: |
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- 10 |
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- 500 |
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- 1000 |
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- 1500 |
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- 2000 |
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- 2500 |
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- 3000 |
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- 3500 |
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- 4000 |
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- 4500 |
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- 5000 |
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- 5500 |
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- 6000 |
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- 6500 |
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- 7000 |
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- 7500 |
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rohm,long-press-ms: |
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description: |
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Long press duration in milliseconds |
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enum: |
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- 10 |
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- 1000 |
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- 2000 |
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- 3000 |
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- 4000 |
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- 5000 |
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- 6000 |
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- 7000 |
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- 8000 |
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- 9000 |
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- 10000 |
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- 11000 |
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- 12000 |
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- 13000 |
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- 14000 |
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- 15000 |
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regulators: |
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$ref: ../regulator/rohm,bd71847-regulator.yaml |
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description: |
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List of child nodes that specify the regulators. |
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required: |
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- compatible |
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- reg |
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- interrupts |
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- regulators |
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additionalProperties: false |
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dependencies: |
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'#clock-cells': [clocks] |
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clocks: ['#clock-cells'] |
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examples: |
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- | |
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#include <dt-bindings/interrupt-controller/irq.h> |
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#include <dt-bindings/leds/common.h> |
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i2c { |
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#address-cells = <1>; |
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#size-cells = <0>; |
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pmic: pmic@4b { |
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compatible = "rohm,bd71847"; |
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reg = <0x4b>; |
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interrupt-parent = <&gpio1>; |
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interrupts = <29 IRQ_TYPE_LEVEL_LOW>; |
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#clock-cells = <0>; |
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clocks = <&osc 0>; |
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rohm,reset-snvs-powered; |
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rohm,short-press-ms = <10>; |
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rohm,long-press-ms = <2000>; |
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regulators { |
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buck1: BUCK1 { |
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regulator-name = "buck1"; |
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regulator-min-microvolt = <700000>; |
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regulator-max-microvolt = <1300000>; |
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regulator-boot-on; |
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regulator-always-on; |
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regulator-ramp-delay = <1250>; |
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rohm,dvs-run-voltage = <900000>; |
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rohm,dvs-idle-voltage = <850000>; |
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rohm,dvs-suspend-voltage = <800000>; |
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}; |
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buck2: BUCK2 { |
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regulator-name = "buck2"; |
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regulator-min-microvolt = <700000>; |
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regulator-max-microvolt = <1300000>; |
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regulator-boot-on; |
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regulator-always-on; |
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regulator-ramp-delay = <1250>; |
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rohm,dvs-run-voltage = <1000000>; |
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rohm,dvs-idle-voltage = <900000>; |
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}; |
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buck3: BUCK3 { |
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regulator-name = "buck3"; |
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regulator-min-microvolt = <550000>; |
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regulator-max-microvolt = <1350000>; |
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regulator-boot-on; |
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}; |
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buck4: BUCK4 { |
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regulator-name = "buck4"; |
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regulator-min-microvolt = <2600000>; |
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regulator-max-microvolt = <3300000>; |
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regulator-boot-on; |
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}; |
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buck5: BUCK5 { |
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regulator-name = "buck5"; |
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regulator-min-microvolt = <1605000>; |
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regulator-max-microvolt = <1995000>; |
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regulator-boot-on; |
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}; |
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buck8: BUCK6 { |
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regulator-name = "buck6"; |
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regulator-min-microvolt = <800000>; |
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regulator-max-microvolt = <1400000>; |
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}; |
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ldo1: LDO1 { |
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regulator-name = "ldo1"; |
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regulator-min-microvolt = <1600000>; |
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regulator-max-microvolt = <3300000>; |
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regulator-boot-on; |
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}; |
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ldo2: LDO2 { |
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regulator-name = "ldo2"; |
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regulator-min-microvolt = <800000>; |
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regulator-max-microvolt = <900000>; |
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regulator-boot-on; |
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}; |
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ldo3: LDO3 { |
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regulator-name = "ldo3"; |
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regulator-min-microvolt = <1800000>; |
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regulator-max-microvolt = <3300000>; |
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}; |
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ldo4: LDO4 { |
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regulator-name = "ldo4"; |
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regulator-min-microvolt = <900000>; |
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regulator-max-microvolt = <1800000>; |
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}; |
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ldo5: LDO5 { |
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regulator-name = "ldo5"; |
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regulator-min-microvolt = <800000>; |
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regulator-max-microvolt = <3300000>; |
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}; |
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ldo6: LDO6 { |
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regulator-name = "ldo6"; |
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regulator-min-microvolt = <900000>; |
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regulator-max-microvolt = <1800000>; |
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}; |
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}; |
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}; |
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};
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