1934b05e8SChiYuan Huang# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2934b05e8SChiYuan Huang%YAML 1.2 3934b05e8SChiYuan Huang--- 4934b05e8SChiYuan Huang$id: http://devicetree.org/schemas/regulator/richtek,rt4831-regulator.yaml# 5934b05e8SChiYuan Huang$schema: http://devicetree.org/meta-schemas/core.yaml# 6934b05e8SChiYuan Huang 7934b05e8SChiYuan Huangtitle: Richtek RT4831 Display Bias Voltage Regulator 8934b05e8SChiYuan Huang 9934b05e8SChiYuan Huangmaintainers: 10934b05e8SChiYuan Huang - ChiYuan Huang <cy_huang@richtek.com> 11934b05e8SChiYuan Huang 12934b05e8SChiYuan Huangdescription: | 13934b05e8SChiYuan Huang RT4831 is a multifunctional device that can provide power to the LCD display 14934b05e8SChiYuan Huang and LCD backlight. 15934b05e8SChiYuan Huang 16934b05e8SChiYuan Huang For Display Bias Voltage DSVP and DSVN, the output range is about 4V to 6.5V. 17934b05e8SChiYuan Huang It is sufficient to meet the current LCD power requirement. 18934b05e8SChiYuan Huang 19934b05e8SChiYuan Huang DSVLCM is a boost regulator in IC internal as DSVP and DSVN input power. 20934b05e8SChiYuan Huang Its voltage should be configured above 0.15V to 0.2V gap larger than the 21934b05e8SChiYuan Huang voltage needed for DSVP and DSVN. Too much voltage gap could improve the 22934b05e8SChiYuan Huang voltage drop from the heavy loading scenario. But it also make the power 23934b05e8SChiYuan Huang efficiency worse. It's a trade-off. 24934b05e8SChiYuan Huang 25934b05e8SChiYuan Huang Datasheet is available at 26934b05e8SChiYuan Huang https://www.richtek.com/assets/product_file/RT4831A/DS4831A-05.pdf 27934b05e8SChiYuan Huang 28934b05e8SChiYuan HuangpatternProperties: 29934b05e8SChiYuan Huang "^DSV(LCM|P|N)$": 30934b05e8SChiYuan Huang type: object 31934b05e8SChiYuan Huang $ref: regulator.yaml# 32*d2d54819SKrzysztof Kozlowski unevaluatedProperties: false 33934b05e8SChiYuan Huang description: 34934b05e8SChiYuan Huang Properties for single Display Bias Voltage regulator. 35934b05e8SChiYuan Huang 36934b05e8SChiYuan HuangadditionalProperties: false 37