SPRUI30H November 2015 – May 2024 DRA745 , DRA746 , DRA750 , DRA756
The Cortex-A15 processor includes a PMU that enables events, such as cache misses and instructions executed, to be counted over a period of time. The PMU provides six counters to gather statistics about the operation of the processor and memory system. Each counter can count any of the events available in Cortex-A15. Upon counter overflow, PMU can generate an interrupt on its PMUIRQ output. This interrupt signal is mapped to the CTITRIGIN[1] input and routed to an MPU_INTC input (MPU_IRQ_131 for Cortex-A15 CPU0 PMU; MPU_IRQ_132 for Cortex-A15 CPU1 PMU).
The Cortex-A15 PMU outputs events to CS_PTM. For details of PMU events, please refer to the Arm Cortex-A15 TRM, available at http://infocenter.arm.com/help/index.jsp.