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/linux-6.12.1/Documentation/devicetree/bindings/mfd/
Drichtek,rt4831.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/mfd/richtek,rt4831.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Richtek RT4831 DSV and Backlight Integrated IC
10 - ChiYuan Huang <cy_huang@richtek.com>
13 RT4831 is a multifunctional device that can provide power to the LCD display
16 For Display Bias Voltage DSVP and DSVN, the output range is about 4V to 6.5V.
23 https://www.richtek.com/assets/product_file/RT4831A/DS4831A-05.pdf
27 const: richtek,rt4831
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/linux-6.12.1/Documentation/devicetree/bindings/regulator/
Drichtek,rt4831-regulator.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/regulator/richtek,rt4831-regulator.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Richtek RT4831 Display Bias Voltage Regulator
10 - ChiYuan Huang <cy_huang@richtek.com>
13 RT4831 is a multifunctional device that can provide power to the LCD display
16 For Display Bias Voltage DSVP and DSVN, the output range is about 4V to 6.5V.
19 DSVLCM is a boost regulator in IC internal as DSVP and DSVN input power.
21 voltage needed for DSVP and DSVN. Too much voltage gap could improve the
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/linux-6.12.1/drivers/regulator/
Drt4831-regulator.c1 // SPDX-License-Identifier: GPL-2.0-only
43 #define VLCM_N_VOLTAGES ((VLCM_MAX_UV - VLCM_MIN_UV) / STEP_UV + 1)
46 #define VPN_N_VOLTAGES ((VPN_MAX_UV - VPN_MIN_UV) / STEP_UV + 1)
115 .name = "DSVP",
117 .of_match = of_match_ptr("DSVP"),
161 regmap = dev_get_regmap(pdev->dev.parent, NULL); in rt4831_regulator_probe()
163 dev_err(&pdev->dev, "Failed to init regmap\n"); in rt4831_regulator_probe()
164 return -ENODEV; in rt4831_regulator_probe()
170 dev_err(&pdev->dev, "Failed to configure dsv mode to normal\n"); in rt4831_regulator_probe()
174 config.dev = pdev->dev.parent; in rt4831_regulator_probe()
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DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
38 managed regulators and simple non-configurable regulators.
64 the netlink mechanism. User-space applications can subscribe to these events
65 for real-time updates on various regulator events.
75 They provide two I2C-controlled DC/DC step-down converters with
101 tristate "Active-semi act8865 voltage regulator"
106 This driver controls a active-semi act8865 voltage output
110 tristate "Active-semi ACT8945A voltage regulator"
113 This driver controls a active-semi ACT8945A voltage regulator
114 via I2C bus. The ACT8945A features three step-down DC/DC converters
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