Lines Matching +full:enable +full:- +full:lcd +full:- +full:bias
1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - ChiYuan Huang <cy_huang@richtek.com>
13 RT4831 is a multifunctional device that can provide power to the LCD display
14 and LCD backlight.
16 For Display Bias Voltage DSVP and DSVN, the output range is about 4V to 6.5V.
17 It's sufficient to meet the current LCD power requirement.
19 For the LCD backlight, it can provide four channel WLED driving capability.
23 https://www.richtek.com/assets/product_file/RT4831A/DS4831A-05.pdf
33 enable-gpios:
35 GPIO to enable/disable the chip. It is optional.
40 $ref: ../regulator/richtek,rt4831-regulator.yaml
43 $ref: ../leds/backlight/richtek,rt4831-backlight.yaml
46 - compatible
47 - reg
52 - |
53 #include <dt-bindings/leds/rt4831-backlight.h>
55 #address-cells = <1>;
56 #size-cells = <0>;
64 regulator-min-microvolt = <4000000>;
65 regulator-max-microvolt = <7150000>;
66 regulator-allow-bypass;
69 regulator-name = "rt4831-dsvp";
70 regulator-min-microvolt = <4000000>;
71 regulator-max-microvolt = <6500000>;
72 regulator-boot-on;
75 regulator-name = "rt4831-dsvn";
76 regulator-min-microvolt = <4000000>;
77 regulator-max-microvolt = <6500000>;
78 regulator-boot-on;
83 compatible = "richtek,rt4831-backlight";
84 default-brightness = <1024>;
85 max-brightness = <2048>;
86 richtek,bled-ovp-sel = /bits/ 8 <RT4831_BLOVPLVL_21V>;
87 richtek,channel-use = /bits/ 8 <RT4831_BLED_ALLCHEN>;