1# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/regulator/richtek,rt5739.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Richtek RT5739 Step-Down Buck Converter 8 9maintainers: 10 - ChiYuan Huang <cy_huang@richtek.com> 11 12description: | 13 The RT5739 is a step-down switching buck converter that can deliver the 14 programmable output voltage from 300mV to 1300mV with wide input voltage 15 supply of 2.5V to 5.5V. It can provide up to 3.5A continuous current 16 capability at over 80% high efficiency. 17 18allOf: 19 - $ref: regulator.yaml# 20 21properties: 22 compatible: 23 enum: 24 - richtek,rt5739 25 26 reg: 27 maxItems: 1 28 29 enable-gpios: 30 maxItems: 1 31 32 richtek,vsel-active-high: 33 description: | 34 If property is present, use the 'VSEL1' register group for buck control. 35 Else, use the 'VSEL0' register group. This depends on external hardware 36 'VSEL' pin connection. 37 type: boolean 38 39 regulator-allowed-modes: 40 description: | 41 buck allowed operating mode 42 0: Auto PFM/PWM mode 43 1: Forced PWM mode 44 items: 45 enum: [0, 1] 46 47required: 48 - compatible 49 - reg 50 51unevaluatedProperties: false 52 53examples: 54 - | 55 #include <dt-bindings/gpio/gpio.h> 56 57 i2c { 58 #address-cells = <1>; 59 #size-cells = <0>; 60 61 regulator@50 { 62 compatible = "richtek,rt5739"; 63 reg = <0x50>; 64 enable-gpios = <&gpio26 1 GPIO_ACTIVE_HIGH>; 65 richtek,vsel-active-high; 66 regulator-name = "richtek,rt5739-buck"; 67 regulator-min-microvolt = <300000>; 68 regulator-max-microvolt = <1300000>; 69 regulator-allowed-modes = <0 1>; 70 regulator-boot-on; 71 }; 72 }; 73