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+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/regulator/richtek,rt5190a-regulator.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Richtek RT5190A PMIC Regulator
+
+maintainers:
+ - ChiYuan Huang <cy_huang@richtek.com>
+
+description: |
+ The RT5190A integrates 1 channel buck controller, 3 channels high efficiency
+ synchronous buck converters, 1 LDO, I2C control interface and peripherial
+ logical control.
+
+ It also supports mute AC OFF depop sound and quick setting storage while
+ input power is removed.
+
+properties:
+ compatible:
+ enum:
+ - richtek,rt5190a
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ vin2-supply:
+ description: phandle to buck2 input voltage.
+
+ vin3-supply:
+ description: phandle to buck3 input voltage.
+
+ vin4-supply:
+ description: phandle to buck4 input voltage.
+
+ vinldo-supply:
+ description: phandle to ldo input voltage
+
+ richtek,mute-enable:
+ description: |
+ The mute function uses 'mutein', 'muteout', and 'vdet' pins as the control
+ signal. When enabled, The normal behavior is to bypass the 'mutein' signal
+ 'muteout'. But if the power source removal is detected from 'vdet',
+ whatever the 'mutein' signal is, it will pull down the 'muteout' to force
+ speakers mute. this function is commonly used to prevent the speaker pop
+ noise during AC power turned off in the modern TV system design.
+ type: boolean
+
+ regulators:
+ type: object
+
+ patternProperties:
+ "^buck[1-4]$|^ldo$":
+ type: object
+ $ref: regulator.yaml#
+ description: |
+ regulator description for buck1 and buck4.
+
+ properties:
+ regulator-allowed-modes:
+ description: |
+ buck operating mode, only buck1/4 support mode operating.
+ 0: auto mode
+ 1: force pwm mode
+ items:
+ enum: [0, 1]
+
+ richtek,latchup-enable:
+ type: boolean
+ description: |
+ If specified, undervolt protection mode changes from the default
+ hiccup to latchup.
+
+ unevaluatedProperties: false
+
+ additionalProperties: false
+
+required:
+ - compatible
+ - reg
+ - regulators
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/regulator/richtek,rt5190a-regulator.h>
+
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ pmic@64 {
+ compatible = "richtek,rt5190a";
+ reg = <0x64>;
+ interrupts-extended = <&gpio26 0 IRQ_TYPE_LEVEL_LOW>;
+ vin2-supply = <&rt5190_buck1>;
+ vin3-supply = <&rt5190_buck1>;
+ vin4-supply = <&rt5190_buck1>;
+
+ regulators {
+ rt5190_buck1: buck1 {
+ regulator-name = "rt5190a-buck1";
+ regulator-min-microvolt = <5090000>;
+ regulator-max-microvolt = <5090000>;
+ regulator-allowed-modes = <RT5190A_OPMODE_AUTO RT5190A_OPMODE_FPWM>;
+ regulator-boot-on;
+ };
+ buck2 {
+ regulator-name = "rt5190a-buck2";
+ regulator-min-microvolt = <600000>;
+ regulator-max-microvolt = <1400000>;
+ regulator-boot-on;
+ };
+ buck3 {
+ regulator-name = "rt5190a-buck3";
+ regulator-min-microvolt = <600000>;
+ regulator-max-microvolt = <1400000>;
+ regulator-boot-on;
+ };
+ buck4 {
+ regulator-name = "rt5190a-buck4";
+ regulator-min-microvolt = <850000>;
+ regulator-max-microvolt = <850000>;
+ regulator-allowed-modes = <RT5190A_OPMODE_AUTO RT5190A_OPMODE_FPWM>;
+ regulator-boot-on;
+ };
+ ldo {
+ regulator-name = "rt5190a-ldo";
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <1200000>;
+ regulator-boot-on;
+ };
+ };
+ };
+ };
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+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef __DT_BINDINGS_RICHTEK_RT5190A_REGULATOR_H__
+#define __DT_BINDINGS_RICHTEK_RT5190A_REGULATOR_H__
+
+/*
+ * BUCK/LDO mode constants which may be used in devicetree properties
+ * (eg. regulator-allowed-modes).
+ * See the manufacturer's datasheet for more information on these modes.
+ */
+
+#define RT5190A_OPMODE_AUTO 0
+#define RT5190A_OPMODE_FPWM 1
+
+#endif