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AM625: MCU Pin Sharing

Owen Mears
Expert 5115 points
Part Number: AM625


Tool/software:

Hello,

Can you support the question below for my customer?

We have a question MCU domain pin interrupt and GPIO, I know each processor A53 and MCU can be in full control of MCU gpio bank and interrupts.
But the question is can they share?  
I mean, for instance,  MCU domain pin 1 interrupts on A53 but pin 2  is interrupt on MCU?
Or it is one or the other, but not both.
Thank you!
Owen
  • 0
    TI__Mastermind 49326 points

    Hello,

    I am looking at your queries and you may expect reply in one or two days.

    Regards,

    Anil.

  • 0 in reply to Swargam Anil
    TI__Mastermind 49326 points

    Hello Owen,

    As per the SOC level, it is possible.

    Users can route Pin interrupt to one core and bank interrupt to the other core.

    This way, SOC can route different pin interrupts  in the same bank to different cores.

    On the software side, this is not possible.

    If the user wants to route MCU GPIO interrupts to Linux and the Linux core owns the entire MCU GPIO instance and it is not possible to share it with the MCU Core.

    Regards,

    Anil.