• ARM Cortex-A7 generic timer
    Hi ARM expert,     I am trying to use generic timer, but seems the generic timer wasn't enabled. My steps are: Set CNTFRQ with 1MHz Set CNTP_CVAL with 100 set CNTP_CTL with 0x00000001    4. Read CNTP_CTL...
  • Generic Timer in Cortex A-53
    What is the input & output of system counter? What is it's purpose? How to start/stop it? What is the input & output of Physical counter? What is it's purpose? How to start/stop it? What are the...
  • Questions about Generic Timer in ARMv8
    When two clusters(Big/Little) exist in SoC, the timer can be used to support Synchronization between two clusters. But How to understand " Synchronization ", anybody can tell me some typical application...
  • Cortex-A7 Processor DSP
    Hello everyone. I am new usage of Allwinner A20. I read in Cortex-A7 specification, that it have DSP & SIMD extensions. And if there are digital processing unit in processor, can i use it? Can i drop...
  • Cortex-A7 4 Cores Boot
    Hi , I am working on Arm for the first time . I am trying to implement a scenario to boot 4 cores parallel . I have few queries here      --> Reset lifting procedure for 4 cores ? how exactly they should...