Raspberry Pi 7-inch touchscreen panel V2 regulator

modulename: rpi-panel-v2-regulator.ko

configname: CONFIG_REGULATOR_RASPBERRYPI_TOUCHSCREEN_V2

Linux Kernel Configuration
└─>Device Drivers
└─>Voltage and Current Regulator Support
└─>GPIO Support
└─>Device Tree and Open Firmware support
└─>Raspberry Pi 7-inch touchscreen panel V2 regulator
In linux kernel since version 6.17 (release Date: 2025-09-28)  
This driver supports regulator on the V2 Raspberry Pi touchscreen
unit. The regulator is used to enable power to the display and to
control backlight PWM.

source code: