AMx3 Power Management

modulename: pm33xx.ko

configname: CONFIG_AMX3_PM

Linux Kernel Configuration
└─>Device Drivers
└─>SOC (System On Chip) specific Drivers
└─>TI SOC drivers support
└─>AMx3 Power Management
In linux kernel since version 4.2 (release Date: 2015-08-30)  
Enable power management on AM335x and AM437x. Required for suspend to mem
and standby states on both AM335x and AM437x platforms and for deeper cpuidle
c-states on AM335x. Also required for rtc and ddr in self-refresh low
power mode on AM437x platforms.

source code: