dt-bindings: mfd: Document ROHM BD71828 bindings
ROHM BD71828 Power management IC integrates 7 buck converters, 7 LDOs, a real-time clock (RTC), 3 GPO/regulator control pins, HALL input and a 32.768 kHz clock gate. Document the dt bindings drivers are using. Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Matti Vaittinen
Lee Jones
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873e443dd2
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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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$id: http://devicetree.org/schemas/mfd/rohm,bd71828-pmic.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: ROHM BD71828 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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BD71828GW is a single-chip power management IC for battery-powered portable
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devices. The IC integrates 7 buck converters, 7 LDOs, and a 1500 mA
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single-cell linear charger. Also included is a Coulomb counter, a real-time
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clock (RTC), and a 32.768 kHz clock gate.
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properties:
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compatible:
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const: rohm,bd71828
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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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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 some
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other but 30MOhm resistor is used the resistance value should be given
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here in Ohms.
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regulators:
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$ref: ../regulator/rohm,bd71828-regulator.yaml
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description:
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List of child nodes that specify the regulators.
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leds:
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$ref: ../leds/rohm,bd71828-leds.yaml
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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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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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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,bd71828";
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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 = "bd71828-32k-out";
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gpio-controller;
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#gpio-cells = <2>;
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gpio-reserved-ranges = <0 1>, <2 1>;
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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 = <500000>;
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regulator-max-microvolt = <2000000>;
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regulator-ramp-delay = <2500>;
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};
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buck2: BUCK2 {
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regulator-name = "buck2";
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regulator-min-microvolt = <500000>;
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regulator-max-microvolt = <2000000>;
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regulator-ramp-delay = <2500>;
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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 = <2000000>;
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};
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buck4: BUCK4 {
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regulator-name = "buck4";
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regulator-min-microvolt = <1000000>;
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regulator-max-microvolt = <1800000>;
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};
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buck5: BUCK5 {
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regulator-name = "buck5";
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regulator-min-microvolt = <2500000>;
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regulator-max-microvolt = <3300000>;
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};
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buck6: BUCK6 {
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regulator-name = "buck6";
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regulator-min-microvolt = <500000>;
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regulator-max-microvolt = <2000000>;
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regulator-ramp-delay = <2500>;
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};
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buck7: BUCK7 {
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regulator-name = "buck7";
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regulator-min-microvolt = <500000>;
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regulator-max-microvolt = <2000000>;
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regulator-ramp-delay = <2500>;
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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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};
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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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};
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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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};
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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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};
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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 = <1800000>;
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regulator-max-microvolt = <1800000>;
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};
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ldo7_reg: LDO7 {
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regulator-name = "ldo7";
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regulator-min-microvolt = <800000>;
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regulator-max-microvolt = <3300000>;
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};
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};
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leds {
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compatible = "rohm,bd71828-leds";
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led-1 {
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rohm,led-compatible = "bd71828-grnled";
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function = LED_FUNCTION_INDICATOR;
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color = <LED_COLOR_ID_GREEN>;
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};
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led-2 {
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rohm,led-compatible = "bd71828-ambled";
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function = LED_FUNCTION_CHARGING;
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color = <LED_COLOR_ID_AMBER>;
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};
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};
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};
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};
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