Add support for ADP5055

Documentation/devicetree/bindings/regulator/adi,adp5055-regulator.yaml

@@ -0,0 +1,203 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright (c) 2024 Analog Devices, Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/regulator/adi,adp5055-regulator.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices ADP5055 Triple Buck Regulator
+
+maintainers:
+  - Alexis Czezar Torreno <[email protected]>
+
+description: |
+  The ADP5055 combines three high performance buck regulators.
+  The device enables direct connection to high input voltages
+  up to 18 V with no preregulators.
+  https://www.analog.com/media/en/technical-documentation/data-sheets/adp5055.pdf
+
+allOf:
+  - $ref: regulator.yaml#
+
+properties:
+  compatible:
+    enum:
+      - adi,adp5055
+
+  reg:
+    description:
+      I2C address of the device. LSB depends on value of
+      hardware pin CFG2.
+    enum:
+      - 0x70
+      - 0x71
+
+  adi,enable-mode-code:
+    description:
+      2-bit value to configure channel enabling
+      0 - Physical EN pin is used for enabling.
+      1 - Internal Register is used for enabling.
+      2 - Both register and physical pin needed.
+      3 - Either register or physical pin.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 0
+    maximum: 3
+    default: 0
+
+  adi,ocp-blanking:
+    description:
+      Enables or disables over current protection
+      blanking (OCP) for all channels.
+      0 = Disabled
+      1 = Enabled
+    type: boolean
+    default: 0
+
+  adi,power-saving-mode-ch321-code:
+    description:
+      3-bit value to enable power saving mode for
+      individual channels. BIT[2:0] = [CH3, CH2, CH1].
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 0
+    maximum: 7
+    default: 0
+
+  adi,output-discharge-function-ch321-code:
+    description:
+      3-bit value to enable output discharge functionality
+      for individual channels. BIT[2:0] = [CH3, CH2, CH1].
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 0
+    maximum: 7
+    default: 7
+
+  adi,disable-delay-code-ch123:
+    description:
+      An array of 3-bit values to configure the disable delay
+      for each channel. {CH1[2:0], CH2[2:0], CH3[2:0].
+      0 - No delay.
+      1 - 2 * Tset
+      2 - 4 * Tset
+      3 - 6 * Tset
+      4 - 8 * Tset
+      5 - 10 * Tset
+      6 - 12 * Tset
+      7 - 14 * Tset
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    maxItems: 3
+    items:
+      minimum: 0
+      maximum: 7
+    default: 0, 0, 0
+
+  adi,enable-delay-code-ch123:
+    description:
+      An array of 3-bit values to configure the enable delay
+      for each channel. {CH1[2:0], CH2[2:0], CH3[2:0].
+      0 - No delay.
+      1 - 1 * Tset
+      2 - 2 * Tset
+      3 - 3 * Tset
+      4 - 4 * Tset
+      5 - 5 * Tset
+      6 - 6 * Tset
+      7 - 7 * Tset
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    maxItems: 3
+    items:
+      minimum: 0
+      maximum: 7
+    default: 0, 0, 0
+
+  adi,dvs-limit-upper-code-ch123:
+    description:
+      An array of 4-bit values to configure the allowable upper
+      side limit of the voltage output of each channel.
+      {CH1[3:0], CH2[3:0], CH3[3:0].
+      Vout_high = Vout + 192mV - (12mV * code)
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    maxItems: 3
+    items:
+      minimum: 0
+      maximum: 15
+    default: 0, 0, 0
+
+  adi,dvs-limit-lower-code-ch123:
+    description:
+      An array of 4-bit values to configure the allowable lower
+      side limit of the voltage output of each channel.
+      {CH1[3:0], CH2[3:0], CH3[3:0].
+      Vout_low = Vout - 190.5mV + (12mV * code)
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    maxItems: 3
+    items:
+      minimum: 0
+      maximum: 15
+    default: 0, 0, 0
+
+  adi,fast-transient-code-ch123:
+    description:
+      An array of 2-bit values to configure the fast transient
+      sensitivity for each channel. {CH1[1:0], CH2[1:0], CH3[1:0].
+      0 - No fast transient.
+      1 - 1.5% window with 3*350uA/V
+      2 - 1.5% window with 5*350uA/V
+      3 - 2.5% window with 5*350uA/V
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    maxItems: 3
+    items:
+      minimum: 0
+      maximum: 3
+    default: 3, 3, 3
+
+  adi,delay-power-good:
+    description:
+      Configures delay timer of the power good (PWRGD) pin.
+      0 - No delay.
+      1 - Delay timer = Tset.
+    type: boolean
+    default: 1
+
+  adi,mask-power-good-ch321-code:
+    description:
+      3-bit value to masks or unmasks individual channels to the
+      external PWRGD hardware pin. BIT[2:0] = [CH3, CH2, CH1].
+      0 - Outputs the PWRGD signal to the external PWRGD pin.
+      1 - Masks the PWRGD signal to the external PWRGD pin.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 0
+    maximum: 7
+    default: 0
+
+required:
+  - compatible
+  - reg
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        regulator@70 {
+            compatible = "adi,adp5055";
+            reg = <0x70>;
+
+            adi,enable-mode-code = <0>;
+            adi,ocp-blanking = <0>;
+            adi,power-saving-mode-ch321-code = <7>;
+            adi,output-discharge-function-ch321-code = <0>;
+            adi,disable-delay-code-ch123 = <0>, <0>, <0>;
+            adi,enable-delay-code-ch123 = <0>, <0>, <0>;
+            adi,dvs-limit-upper-code-ch123 = <0>, <0>, <0>;
+            adi,dvs-limit-lower-code-ch123 = <0>, <0>, <0>;
+            adi,fast-transient-code-ch123 = <3>, <3>, <3>;
+            adi,delay-power-good = <1>;
+            adi,mask-power-good-ch321-code = <0>;
+
+            regulator-min-microvolt = <408000>;
+            regulator-max-microvolt = <790500>;
+        };
+    };

Kconfig.adi

@@ -95,6 +95,7 @@ config KERNEL_ALL_ADI_DRIVERS
 	imply REGULATOR_MAX77857
 	imply REGULATOR_MAX77541
 	imply MFD_MAX77541
+        imply REGULATOR_ADP5055
 
 source "drivers/clk/Kconfig.adi"
 source "drivers/hwmon/Kconfig.adi"

drivers/regulator/Kconfig

@@ -106,6 +106,16 @@ config REGULATOR_AD5398
 	  This driver supports AD5398 and AD5821 current regulator chips.
 	  If building into module, its name is ad5398.ko.
 
+config REGULATOR_ADP5055
+	tristate "Analog Devices ADP5055 Triple Buck Regulator"
+	depends on I2C
+	help
+	  This driver controls an Analog Devices ADP5055 with triple buck
+          regulators using an I2C interface.
+
+	  Say M here if you want to include support for the regulator as a
+	  module.
+
 config REGULATOR_ANATOP
 	tristate "Freescale i.MX on-chip ANATOP LDO regulators"
 	depends on ARCH_MXC || COMPILE_TEST

drivers/regulator/Makefile

@@ -20,6 +20,7 @@ obj-$(CONFIG_REGULATOR_AB8500)	+= ab8500-ext.o ab8500.o
 obj-$(CONFIG_REGULATOR_ACT8865) += act8865-regulator.o
 obj-$(CONFIG_REGULATOR_ACT8945A) += act8945a-regulator.o
 obj-$(CONFIG_REGULATOR_AD5398) += ad5398.o
+obj-$(CONFIG_REGULATOR_ADP5055) += adp5055-regulator.o
 obj-$(CONFIG_REGULATOR_ANATOP) += anatop-regulator.o
 obj-$(CONFIG_REGULATOR_ARIZONA_LDO1) += arizona-ldo1.o
 obj-$(CONFIG_REGULATOR_ARIZONA_MICSUPP) += arizona-micsupp.o