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Add support for ADP5055 triple buck regulator.
Merge series from Alexis Czezar Torreno <[email protected]>: Introduce a regulator driver support for ADP5055. The device combines 3 high performance buck regulators in a 43-termminal land grid array package. The device enables direct connection to high input voltages up to 18V with no preregulator. Channel 1 and 2 deliver a programmable output current of 3.5A or 7.5A or provide a single output with up to 14A in parallel operation. Channel 3 has a programmable output current of 1.5A or 3A.
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‎Documentation/devicetree/bindings/regulator/adi,adp5055-regulator.yaml

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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/regulator/adi,adp5055-regulator.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Analog Devices ADP5055 Triple Buck Regulator
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maintainers:
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- Alexis Czezar Torreno <[email protected]>
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description: |
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The ADP5055 combines three high performance buck regulator. The device enables
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direct connection to high input voltages up to 18 V with no preregulators.
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https://www.analog.com/media/en/technical-documentation/data-sheets/adp5055.pdf
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properties:
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compatible:
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enum:
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- adi,adp5055
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reg:
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enum:
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- 0x70
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- 0x71
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adi,tset-us:
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description:
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Setting time used by the device. This is changed via soldering specific
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resistor values on the CFG2 pin.
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enum: [2600, 20800]
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default: 2600
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adi,ocp-blanking:
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description:
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If present, overcurrent protection (OCP) blanking for all regulator is on.
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type: boolean
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adi,delay-power-good:
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description:
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Configures delay timer of the power good (PWRGD) pin. Delay is based on
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Tset which can be 2.6 ms or 20.8 ms.
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type: boolean
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'#address-cells':
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const: 1
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'#size-cells':
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const: 0
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patternProperties:
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'^buck[0-2]$':
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type: object
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$ref: regulator.yaml#
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unevaluatedProperties: false
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properties:
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enable-gpios:
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maxItems: 1
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description:
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GPIO specifier to enable the GPIO control for each regulator. The
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driver supports two modes of enable, hardware only (GPIOs) or software
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only (Registers). Pure hardware enabling requires each regulator to
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contain this property. If at least one regulator does not have this,
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the driver automatically switches to software only mode.
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adi,dvs-limit-upper-microvolt:
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description:
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Configure the allowable upper side limit of the voltage output of each
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regulator in microvolt. Relative to the default Vref trimming value.
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Vref = 600 mV. Voltages are in 12 mV steps, value is autoadjusted.
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Vout_high = Vref_trim + dvs-limit-upper.
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minimum: 12000
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maximum: 192000
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default: 192000
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adi,dvs-limit-lower-microvolt:
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description:
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Configure the allowable lower side limit of the voltage output of each
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regulator in microvolt. Relative to the default Vref trimming value.
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Vref = 600 mV. Voltages are in 12 mV steps, value is autoadjusted.
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Vout_low = Vref_trim + dvs-limit-lower.
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minimum: -190500
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maximum: -10500
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default: -190500
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adi,fast-transient:
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description:
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Configures the fast transient sensitivity for each regulator.
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"none" - No fast transient.
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"3G_1.5%" - 1.5% window with 3*350uA/V
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"5G_1.5%" - 1.5% window with 5*350uA/V
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"5G_2.5%" - 2.5% window with 5*350uA/V
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enum: [none, 3G_1.5%, 5G_1.5%, 5G_2.5%]
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default: 5G_2.5%
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adi,mask-power-good:
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description:
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If present, masks individual regulators PWRGD signal to the external
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PWRGD hardware pin.
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type: boolean
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required:
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- regulator-name
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required:
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- compatible
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- reg
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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i2c {
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#address-cells = <1>;
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#size-cells = <0>;
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regulator@70 {
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compatible = "adi,adp5055";
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reg = <0x70>;
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#address-cells = <1>;
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#size-cells = <0>;
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adi,tset-us = <2600>;
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adi,ocp-blanking;
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adi,delay-power-good;
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buck0 {
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regulator-name = "buck0";
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enable-gpios = <&gpio 17 GPIO_ACTIVE_HIGH>;
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adi,dvs-limit-upper-microvolt = <192000>;
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adi,dvs-limit-lower-microvolt = <(-190500)>;
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adi,fast-transient = "5G_2.5%";
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adi,mask-power-good;
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};
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buck1 {
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regulator-name = "buck1";
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enable-gpios = <&gpio 18 GPIO_ACTIVE_HIGH>;
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adi,dvs-limit-upper-microvolt = <192000>;
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adi,dvs-limit-lower-microvolt = <(-190500)>;
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adi,fast-transient = "5G_2.5%";
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adi,mask-power-good;
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};
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buck2 {
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regulator-name = "buck2";
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enable-gpios = <&gpio 19 GPIO_ACTIVE_HIGH>;
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adi,dvs-limit-upper-microvolt = <192000>;
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adi,dvs-limit-lower-microvolt = <(-190500)>;
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adi,fast-transient = "5G_2.5%";
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adi,mask-power-good;
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};
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};
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};

‎MAINTAINERS

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F: Documentation/devicetree/bindings/iio/filter/adi,admv8818.yaml
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F: drivers/iio/filter/admv8818.c
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ANALOG DEVICES INC ADP5055 DRIVER
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M: Alexis Czezar Torreno <[email protected]>
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S: Supported
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W: https://ez.analog.com/linux-software-drivers
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F: Documentation/devicetree/bindings/regulator/adi,adp5055-regulator.yaml
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F: drivers/regulator/adp5055-regulator.c
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ANALOG DEVICES INC ADP5061 DRIVER
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M: Michael Hennerich <[email protected]>
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L: [email protected]

‎drivers/regulator/Kconfig

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This driver supports AD5398 and AD5821 current regulator chips.
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If building into module, its name is ad5398.ko.
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config REGULATOR_ADP5055
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tristate "Analog Devices ADP5055 Triple Buck Regulator"
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depends on I2C
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select REGMAP_I2C
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help
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This driver controls an Analog Devices ADP5055 with triple buck
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regulators using an I2C interface.
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Say M here if you want to include support for the regulator as a
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module.
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config REGULATOR_ANATOP
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tristate "Freescale i.MX on-chip ANATOP LDO regulators"
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depends on ARCH_MXC || COMPILE_TEST

‎drivers/regulator/Makefile

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obj-$(CONFIG_REGULATOR_ACT8865) += act8865-regulator.o
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obj-$(CONFIG_REGULATOR_ACT8945A) += act8945a-regulator.o
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obj-$(CONFIG_REGULATOR_AD5398) += ad5398.o
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obj-$(CONFIG_REGULATOR_ADP5055) += adp5055-regulator.o
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obj-$(CONFIG_REGULATOR_ANATOP) += anatop-regulator.o
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obj-$(CONFIG_REGULATOR_ARIZONA_LDO1) += arizona-ldo1.o
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obj-$(CONFIG_REGULATOR_ARIZONA_MICSUPP) += arizona-micsupp.o

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