230 lines
7.2 KiB
YAML
230 lines
7.2 KiB
YAML
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# 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 <matti.vaittinen@fi.rohmeurope.com>
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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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