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MCU-PLUS-SDK-AM243X: Can MCU1_0 (r5f core) access the PCIe control registers?

Hideomi Hanaoka
Prodigy 170 points
Part Number: MCU-PLUS-SDK-AM243X

I understand MPU1_0 (a53 core) Linux can control the PCIe EP(End Point).

But I want to use MCU1_0 (r5f core) on AM64x for this purpose.

... AM64x AM243x TRM(Technical Reference Manual), spruim2c.pdf ... 

  2.1 Main Domain Memory Map

      ----> found names 'PCIE0_CORE_ECC_AGGR0', 'PCIE0_CORE_DBN_CFG_PCIE_CORE', 'PCIE0_DAT0', ...

  2.2 MCU Domain Memory Map

      ----> not found name concerned with PCIe...

Can MCU1_0 (r5f core) access the PCIe control registers directly?

  • 0
    Mastermind 7005 points

    Hi,

    I'm not TI, so you might want to wait for an official reply, but here's what I know:

    - the MCU1_0 (actually all the R5f cores) in the AM64x are in the main domain. The MCU domain is only the M4 core.

    - Yes, MCU1_0 can access the PCIe controller registers

    - As far as I know there is no software support from TI (yet). Someone from TI might know more about that.

    Regards,

    Dominic

  • 0 in reply to Dominic Rath
    Prodigy 170 points

    Thanks, I understood R5f cores are in the main domain.

    I will close this thread.

    Regards, :-)

  • 0 in reply to Dominic Rath
    TI__Mastermind 27743 points

    Hi Dominic,

    Thanks for your kind reply.

    All your replies are correct. MCU1_o can access PCIE. As you said we don't support PCIE in our SDK yet.

    Regards,

    Prasad