1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/regulator/richtek,rt4831-regulator.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Richtek RT4831 Display Bias Voltage Regulator 8 9maintainers: 10 - ChiYuan Huang <cy_huang@richtek.com> 11 12description: | 13 RT4831 is a multifunctional device that can provide power to the LCD display 14 and LCD backlight. 15 16 For Display Bias Voltage DSVP and DSVN, the output range is about 4V to 6.5V. 17 It is sufficient to meet the current LCD power requirement. 18 19 DSVLCM is a boost regulator in IC internal as DSVP and DSVN input power. 20 Its voltage should be configured above 0.15V to 0.2V gap larger than the 21 voltage needed for DSVP and DSVN. Too much voltage gap could improve the 22 voltage drop from the heavy loading scenario. But it also make the power 23 efficiency worse. It's a trade-off. 24 25 Datasheet is available at 26 https://www.richtek.com/assets/product_file/RT4831A/DS4831A-05.pdf 27 28patternProperties: 29 "^DSV(LCM|P|N)$": 30 type: object 31 $ref: regulator.yaml# 32 unevaluatedProperties: false 33 description: 34 Properties for single Display Bias Voltage regulator. 35 36additionalProperties: false 37