| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 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 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Richtek RT4831 Display Bias Voltage Regulator |
| 8 | |
| 9 | maintainers: |
| 10 | - ChiYuan Huang <cy_huang@richtek.com> |
| 11 | |
| 12 | description: | |
| 13 | RT4831 is a multifunctional device that can provide power to the LCD display |
| 14 | and LCD backlight. |
| 15 | |
| 16 | For Display Bias Voltage DSVP and DSVN, the output range is about 4V to 6.5V. |
| 17 | It is sufficient to meet the current LCD power requirement. |
| 18 | |
| 19 | DSVLCM is a boost regulator in IC internal as DSVP and DSVN input power. |
| 20 | Its voltage should be configured above 0.15V to 0.2V gap larger than the |
| 21 | voltage needed for DSVP and DSVN. Too much voltage gap could improve the |
| 22 | voltage drop from the heavy loading scenario. But it also make the power |
| 23 | efficiency worse. It's a trade-off. |
| 24 | |
| 25 | Datasheet is available at |
| 26 | https://www.richtek.com/assets/product_file/RT4831A/DS4831A-05.pdf |
| 27 | |
| 28 | patternProperties: |
| 29 | "^DSV(LCM|P|N)$": |
| 30 | type: object |
| 31 | $ref: regulator.yaml# |
| 32 | unevaluatedProperties: false |
| 33 | description: |
| 34 | Properties for single Display Bias Voltage regulator. |
| 35 | |
| 36 | additionalProperties: false |