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Message-ID: <20250403-upstream-adp5055-v3-1-8eb170f4f94e@analog.com>
Date: Thu, 3 Apr 2025 10:43:10 +0800
From: Alexis Czezar Torreno <alexisczezar.torreno@...log.com>
To: Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>,
Rob
Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor
Dooley <conor+dt@...nel.org>
CC: <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
Alexis
Czezar Torreno <alexisczezar.torreno@...log.com>
Subject: [PATCH v3 1/2] regulator: dt-bindings: adi,adp5055-regulator: Add
adp5055 support
Add documentation for devicetree bindings for ADP5055. The device consists
of 3 buck regulators able to connect to high input voltages of up to 18V
with no preregulators.
Signed-off-by: Alexis Czezar Torreno <alexisczezar.torreno@...log.com>
---
.../bindings/regulator/adi,adp5055-regulator.yaml | 157 +++++++++++++++++++++
MAINTAINERS | 6 +
2 files changed, 163 insertions(+)
diff --git a/Documentation/devicetree/bindings/regulator/adi,adp5055-regulator.yaml b/Documentation/devicetree/bindings/regulator/adi,adp5055-regulator.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..a55d564d8d0783fe5d503d4c5e2f6a38fc0702cd
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/adi,adp5055-regulator.yaml
@@ -0,0 +1,157 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%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 <alexisczezar.torreno@...log.com>
+
+description: |
+ The ADP5055 combines three high performance buck regulator. 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
+
+properties:
+ compatible:
+ enum:
+ - adi,adp5055
+
+ reg:
+ enum:
+ - 0x70
+ - 0x71
+
+ adi,tset-us:
+ description:
+ Setting time used by the device. This is changed via soldering specific
+ resistor values on the CFG2 pin.
+ enum: [2600, 20800]
+ default: 2600
+
+ adi,ocp-blanking:
+ description:
+ If present, overcurrent protection (OCP) blanking for all regulator is on.
+ type: boolean
+
+ adi,delay-power-good:
+ description:
+ Configures delay timer of the power good (PWRGD) pin. Delay is based on
+ Tset which can be 2.6 ms or 20.8 ms.
+ type: boolean
+
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+patternProperties:
+ "^buck[0-2]$":
+ type: object
+ $ref: regulator.yaml#
+ unevaluatedProperties: false
+
+ properties:
+ enable-gpios:
+ maxItems: 1
+ description:
+ GPIO specifier to enable the GPIO control for each regulator. The
+ driver supports two modes of enable, hardware only (GPIOs) or software
+ only (Registers). Pure hardware enabling requires each regulator to
+ contain this property. If at least one regulator does not have this,
+ the driver automatically switches to software only mode.
+
+ adi,dvs-limit-upper-microvolt:
+ description:
+ Configure the allowable upper side limit of the voltage output of each
+ regulator in microvolt. Relative to the default Vref trimming value.
+ Vref = 600 mV. Voltages are in 12 mV steps, value is autoadjusted.
+ Vout_high = Vref_trim + dvs-limit-upper.
+ minimum: 12000
+ maximum: 192000
+ default: 192000
+
+ adi,dvs-limit-lower-microvolt:
+ description:
+ Configure the allowable lower side limit of the voltage output of each
+ regulator in microvolt. Relative to the default Vref trimming value.
+ Vref = 600 mV. Voltages are in 12 mV steps, value is autoadjusted.
+ Vout_low = Vref_trim + dvs-limit-lower.
+ minimum: -190500
+ maximum: -10500
+ default: -190500
+
+ adi,fast-transient:
+ description:
+ Configures the fast transient sensitivity for each regulator.
+ "none" - No fast transient.
+ "3G_1.5%" - 1.5% window with 3*350uA/V
+ "5G_1.5%" - 1.5% window with 5*350uA/V
+ "5G_2.5%" - 2.5% window with 5*350uA/V
+ enum: [none, 3G_1.5%, 5G_1.5%, 5G_2.5%]
+ default: 5G_2.5
+
+ adi,mask-power-good:
+ description:
+ If present, masks individual regulators PWRGD signal to the external
+ PWRGD hardware pin.
+ type: boolean
+
+ required:
+ - regulator-name
+
+required:
+ - compatible
+ - reg
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ regulator@70 {
+ compatible = "adi,adp5055";
+ reg = <0x70>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ adi,tset-us = <2600>;
+ adi,ocp-blanking;
+ adi,delay-power-good;
+
+ buck0 {
+ regulator-name = "buck0";
+ enable-gpios = <&gpio 17 GPIO_ACTIVE_HIGH>;
+ adi,dvs-limit-upper-microvolt = <192000>;
+ adi,dvs-limit-lower-microvolt = <(-190500)>;
+ adi,fast-transient = "5G_2.5%";
+ adi,mask-power-good;
+ };
+
+ buck1 {
+ regulator-name = "buck1";
+ enable-gpios = <&gpio 18 GPIO_ACTIVE_HIGH>;
+ adi,dvs-limit-upper-microvolt = <192000>;
+ adi,dvs-limit-lower-microvolt = <(-190500)>;
+ adi,fast-transient = "5G_2.5%";
+ adi,mask-power-good;
+ };
+
+ buck2 {
+ regulator-name = "buck2";
+ enable-gpios = <&gpio 19 GPIO_ACTIVE_HIGH>;
+ adi,dvs-limit-upper-microvolt = <192000>;
+ adi,dvs-limit-lower-microvolt = <(-190500)>;
+ adi,fast-transient = "5G_2.5%";
+ adi,mask-power-good;
+ };
+ };
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index 896a307fa06545e2861abe46ea7029f9b4d3628e..b2ec43f84d84765c319d8403fb5650afa273db83 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1525,6 +1525,12 @@ W: https://ez.analog.com/linux-software-drivers
F: Documentation/devicetree/bindings/iio/filter/adi,admv8818.yaml
F: drivers/iio/filter/admv8818.c
+ANALOG DEVICES INC ADP5055 DRIVER
+M: Alexis Czezar Torreno <alexisczezar.torreno@...log.com>
+S: Supported
+W: https://ez.analog.com/linux-software-drivers
+F: Documentation/devicetree/bindings/regulator/adi,adp5055-regulator.yaml
+
ANALOG DEVICES INC ADP5061 DRIVER
M: Michael Hennerich <Michael.Hennerich@...log.com>
L: linux-pm@...r.kernel.org
--
2.34.1
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