Richtek RT5120 Power Management IC

modulename: rt5120.ko

configname: CONFIG_MFD_RT5120

Linux Kernel Configuration
└─>Device Drivers
└─>Multifunction device drivers
└─>Richtek RT5120 Power Management IC
In linux kernel since version 6.1 (release Date: 2022-12-11)  
The enables support for Richtek RT5120 PMIC. It includes four high
efficiency buck converters and one LDO voltage regulator. The device
is targeted at providing the CPU voltage, memory, I/O and peripheral
power rails in home entertainment devices.

source code:
drivers/mfd//rt5120.c