SPRUIE9D May 2017 – May 2024 DRA74P , DRA75P , DRA76P , DRA77P
As part of the system-wide power-management scheme, the L4 interconnects go into IDLE state after receiving a request from the PRCM module after all commands are serviced. This function is handled by hardware. For more information, see Chapter 3, Power, Reset, and Clock Management.
To reduce power consumption, each L4 interconnect automatically performs internal clock autogating. This is managed by hardware; no software configurations or settings are required.
L4_CFG, L4_PER1, L4_PER2, L4_PER3, and L4_WKUP are located in the always-on power domain and no retention is needed for these L4 interconnects.