regulator: Add bindings for Richtek RT5190A PMIC
Add bindings for Richtek RT5190A PMIC. Signed-off-by: ChiYuan Huang <cy_huang@richtek.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Link: https://lore.kernel.org/r/1646812903-32496-2-git-send-email-u0084500@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
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ChiYuan Huang
Mark Brown
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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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$id: http://devicetree.org/schemas/regulator/richtek,rt5190a-regulator.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Richtek RT5190A PMIC Regulator
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maintainers:
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- ChiYuan Huang <cy_huang@richtek.com>
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description: |
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The RT5190A integrates 1 channel buck controller, 3 channels high efficiency
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synchronous buck converters, 1 LDO, I2C control interface and peripherial
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logical control.
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It also supports mute AC OFF depop sound and quick setting storage while
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input power is removed.
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properties:
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compatible:
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enum:
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- richtek,rt5190a
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reg:
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maxItems: 1
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interrupts:
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maxItems: 1
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vin2-supply:
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description: phandle to buck2 input voltage.
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vin3-supply:
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description: phandle to buck3 input voltage.
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vin4-supply:
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description: phandle to buck4 input voltage.
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vinldo-supply:
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description: phandle to ldo input voltage
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richtek,mute-enable:
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description: |
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The mute function uses 'mutein', 'muteout', and 'vdet' pins as the control
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signal. When enabled, The normal behavior is to bypass the 'mutein' signal
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'muteout'. But if the power source removal is detected from 'vdet',
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whatever the 'mutein' signal is, it will pull down the 'muteout' to force
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speakers mute. this function is commonly used to prevent the speaker pop
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noise during AC power turned off in the modern TV system design.
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type: boolean
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regulators:
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type: object
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patternProperties:
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"^buck[1-4]$|^ldo$":
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type: object
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$ref: regulator.yaml#
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description: |
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regulator description for buck1 and buck4.
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properties:
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regulator-allowed-modes:
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description: |
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buck operating mode, only buck1/4 support mode operating.
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0: auto mode
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1: force pwm mode
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items:
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enum: [0, 1]
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richtek,latchup-enable:
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type: boolean
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description: |
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If specified, undervolt protection mode changes from the default
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hiccup to latchup.
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unevaluatedProperties: false
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additionalProperties: false
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required:
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- compatible
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- reg
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- regulators
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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/regulator/richtek,rt5190a-regulator.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@64 {
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compatible = "richtek,rt5190a";
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reg = <0x64>;
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interrupts-extended = <&gpio26 0 IRQ_TYPE_LEVEL_LOW>;
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vin2-supply = <&rt5190_buck1>;
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vin3-supply = <&rt5190_buck1>;
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vin4-supply = <&rt5190_buck1>;
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regulators {
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rt5190_buck1: buck1 {
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regulator-name = "rt5190a-buck1";
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regulator-min-microvolt = <5090000>;
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regulator-max-microvolt = <5090000>;
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regulator-allowed-modes = <RT5190A_OPMODE_AUTO RT5190A_OPMODE_FPWM>;
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regulator-boot-on;
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};
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buck2 {
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regulator-name = "rt5190a-buck2";
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regulator-min-microvolt = <600000>;
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regulator-max-microvolt = <1400000>;
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regulator-boot-on;
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};
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buck3 {
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regulator-name = "rt5190a-buck3";
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regulator-min-microvolt = <600000>;
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regulator-max-microvolt = <1400000>;
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regulator-boot-on;
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};
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buck4 {
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regulator-name = "rt5190a-buck4";
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regulator-min-microvolt = <850000>;
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regulator-max-microvolt = <850000>;
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regulator-allowed-modes = <RT5190A_OPMODE_AUTO RT5190A_OPMODE_FPWM>;
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regulator-boot-on;
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};
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ldo {
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regulator-name = "rt5190a-ldo";
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regulator-min-microvolt = <1200000>;
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regulator-max-microvolt = <1200000>;
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regulator-boot-on;
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};
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};
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};
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};
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@ -0,0 +1,15 @@
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __DT_BINDINGS_RICHTEK_RT5190A_REGULATOR_H__
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#define __DT_BINDINGS_RICHTEK_RT5190A_REGULATOR_H__
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/*
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* BUCK/LDO mode constants which may be used in devicetree properties
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* (eg. regulator-allowed-modes).
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* See the manufacturer's datasheet for more information on these modes.
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*/
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#define RT5190A_OPMODE_AUTO 0
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#define RT5190A_OPMODE_FPWM 1
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#endif
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