SPRUIV7B May 2022 – September 2023 AM620-Q1 , AM623 , AM625 , AM625-Q1 , AM625SIP
Auto clock gating feature is also called nogate control. It is a technique to reduce the dynamic power for SoC. When nogate control is set to 1b0, it means that the CBA clock will be automatically shut off after 12 cycles idle. After the clock is auto shut off, the first future transaction will have additional pipe latency for each hop. The subsequence transaction will not have this latency penalty if it is arrived within 12 clock cycle windows. When nogate control is set to 1b1, the CBA clock will not shut off automatically.
The auto clock gating control can be modified during device initialization time through register CLKGATE_CTRL in wkup_ctrl_mmr block.