1*934b05e8SChiYuan Huang# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2*934b05e8SChiYuan Huang%YAML 1.2 3*934b05e8SChiYuan Huang--- 4*934b05e8SChiYuan Huang$id: http://devicetree.org/schemas/regulator/richtek,rt4831-regulator.yaml# 5*934b05e8SChiYuan Huang$schema: http://devicetree.org/meta-schemas/core.yaml# 6*934b05e8SChiYuan Huang 7*934b05e8SChiYuan Huangtitle: Richtek RT4831 Display Bias Voltage Regulator 8*934b05e8SChiYuan Huang 9*934b05e8SChiYuan Huangmaintainers: 10*934b05e8SChiYuan Huang - ChiYuan Huang <cy_huang@richtek.com> 11*934b05e8SChiYuan Huang 12*934b05e8SChiYuan Huangdescription: | 13*934b05e8SChiYuan Huang RT4831 is a multifunctional device that can provide power to the LCD display 14*934b05e8SChiYuan Huang and LCD backlight. 15*934b05e8SChiYuan Huang 16*934b05e8SChiYuan Huang For Display Bias Voltage DSVP and DSVN, the output range is about 4V to 6.5V. 17*934b05e8SChiYuan Huang It is sufficient to meet the current LCD power requirement. 18*934b05e8SChiYuan Huang 19*934b05e8SChiYuan Huang DSVLCM is a boost regulator in IC internal as DSVP and DSVN input power. 20*934b05e8SChiYuan Huang Its voltage should be configured above 0.15V to 0.2V gap larger than the 21*934b05e8SChiYuan Huang voltage needed for DSVP and DSVN. Too much voltage gap could improve the 22*934b05e8SChiYuan Huang voltage drop from the heavy loading scenario. But it also make the power 23*934b05e8SChiYuan Huang efficiency worse. It's a trade-off. 24*934b05e8SChiYuan Huang 25*934b05e8SChiYuan Huang Datasheet is available at 26*934b05e8SChiYuan Huang https://www.richtek.com/assets/product_file/RT4831A/DS4831A-05.pdf 27*934b05e8SChiYuan Huang 28*934b05e8SChiYuan HuangpatternProperties: 29*934b05e8SChiYuan Huang "^DSV(LCM|P|N)$": 30*934b05e8SChiYuan Huang type: object 31*934b05e8SChiYuan Huang $ref: regulator.yaml# 32*934b05e8SChiYuan Huang description: 33*934b05e8SChiYuan Huang Properties for single Display Bias Voltage regulator. 34*934b05e8SChiYuan Huang 35*934b05e8SChiYuan HuangadditionalProperties: false 36