2023-08-30 17:31:07 +02:00
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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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$id: http://devicetree.org/schemas/mfd/rohm,bd71815-pmic.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: ROHM BD71815 Power Management Integrated Circuit
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maintainers:
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- Matti Vaittinen <mazziesaccount@gmail.com>
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description: |
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BD71815AGW is a single-chip power management ICs for battery-powered
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portable devices. It integrates 5 buck converters, 8 LDOs, a boost driver
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for LED and a 500 mA single-cell linear charger. Also included is a Coulomb
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counter, a real-time clock (RTC), and a 32.768 kHz clock gate and two GPOs.
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properties:
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compatible:
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const: rohm,bd71815
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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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gpio-controller: true
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"#gpio-cells":
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const: 2
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description: |
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The first cell is the pin number and the second cell is used to specify
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flags. See ../gpio/gpio.txt for more information.
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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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const: bd71815-32k-out
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rohm,clkout-open-drain:
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description: clk32kout mode. Set to 1 for "open-drain" or 0 for "cmos".
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2023-10-24 12:59:35 +02:00
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$ref: /schemas/types.yaml#/definitions/uint32
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2023-08-30 17:31:07 +02:00
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minimum: 0
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maximum: 1
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rohm,charger-sense-resistor-ohms:
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minimum: 10000000
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maximum: 50000000
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description: |
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BD71827 and BD71828 have SAR ADC for measuring charging currents.
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External sense resistor (RSENSE in data sheet) should be used. If
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something other but 30MOhm resistor is used the resistance value
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should be given here in Ohms.
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default: 30000000
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regulators:
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$ref: ../regulator/rohm,bd71815-regulator.yaml
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description:
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List of child nodes that specify the regulators.
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gpio-reserved-ranges:
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description: |
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Usage of BD71828 GPIO pins can be changed via OTP. This property can be
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used to mark the pins which should not be configured for GPIO. Please see
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the ../gpio/gpio.txt for more information.
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rohm,enable-hidden-gpo:
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description: |
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The BD71815 has undocumented GPO at pin E5. Pin is marked as GND at the
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data-sheet as its location in the middle of GND pins makes it hard to
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use on PCB. If your board has managed to use this pin you can enable the
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second GPO by defining this property. Dont enable this if you are unsure
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about how the E5 pin is connected on your board.
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type: boolean
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required:
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- compatible
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- reg
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- interrupts
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- clocks
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- "#clock-cells"
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- regulators
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- gpio-controller
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- "#gpio-cells"
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additionalProperties: false
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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,bd71815";
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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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clocks = <&osc 0>;
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#clock-cells = <0>;
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clock-output-names = "bd71815-32k-out";
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gpio-controller;
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#gpio-cells = <2>;
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rohm,charger-sense-resistor-ohms = <10000000>;
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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 = <800000>;
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regulator-max-microvolt = <2000000>;
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regulator-always-on;
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regulator-ramp-delay = <1250>;
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rohm,dvs-run-voltage = <1150000>;
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rohm,dvs-suspend-voltage = <950000>;
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};
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buck2: buck2 {
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regulator-name = "buck2";
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regulator-min-microvolt = <800000>;
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regulator-max-microvolt = <2000000>;
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regulator-always-on;
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regulator-ramp-delay = <1250>;
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rohm,dvs-run-voltage = <1150000>;
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rohm,dvs-suspend-voltage = <950000>;
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};
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buck3: buck3 {
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regulator-name = "buck3";
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regulator-min-microvolt = <1200000>;
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regulator-max-microvolt = <2700000>;
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regulator-always-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 = <1100000>;
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regulator-max-microvolt = <1850000>;
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regulator-always-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 = <1800000>;
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regulator-max-microvolt = <3300000>;
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regulator-always-on;
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};
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ldo1: ldo1 {
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regulator-name = "ldo1";
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regulator-min-microvolt = <800000>;
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regulator-max-microvolt = <3300000>;
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regulator-always-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 = <3300000>;
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regulator-always-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 = <800000>;
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regulator-max-microvolt = <3300000>;
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regulator-always-on;
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};
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ldo4: ldo4 {
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regulator-name = "ldo4";
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regulator-min-microvolt = <800000>;
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regulator-max-microvolt = <3300000>;
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regulator-always-on;
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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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regulator-always-on;
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};
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ldo6: ldodvref {
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regulator-name = "ldodvref";
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regulator-always-on;
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};
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ldo7: ldolpsr {
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regulator-name = "ldolpsr";
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regulator-always-on;
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};
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boost: wled {
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regulator-name = "wled";
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regulator-min-microamp = <10>;
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regulator-max-microamp = <25000>;
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};
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};
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};
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};
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