| # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/regulator/richtek,rt4831-regulator.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: Richtek RT4831 Display Bias Voltage Regulator |
| |
| maintainers: |
| - ChiYuan Huang <cy_huang@richtek.com> |
| |
| description: | |
| RT4831 is a multifunctional device that can provide power to the LCD display |
| and LCD backlight. |
| |
| For Display Bias Voltage DSVP and DSVN, the output range is about 4V to 6.5V. |
| It is sufficient to meet the current LCD power requirement. |
| |
| DSVLCM is a boost regulator in IC internal as DSVP and DSVN input power. |
| Its voltage should be configured above 0.15V to 0.2V gap larger than the |
| voltage needed for DSVP and DSVN. Too much voltage gap could improve the |
| voltage drop from the heavy loading scenario. But it also make the power |
| efficiency worse. It's a trade-off. |
| |
| Datasheet is available at |
| https://www.richtek.com/assets/product_file/RT4831A/DS4831A-05.pdf |
| |
| patternProperties: |
| "^DSV(LCM|P|N)$": |
| type: object |
| $ref: regulator.yaml# |
| description: |
| Properties for single Display Bias Voltage regulator. |
| |
| additionalProperties: false |
