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PROCESSOR-SDK-J721S2: TargetBoard: Micron LPDDR4 memory changed on target board

Jaseop Kwak
Prodigy 90 points

Part Number: PROCESSOR-SDK-J721S2

Tool/software:

Dear TI Supporters,

We have made a target board based on J721S2 EVM.

Almost parts are similar except for memory (16GB : 8GB x2)

From : MT53E2G32D4DT-046 AAT:A (Micron)

To : MT53E2G32D4DE-046 AAT:C

We have tried booting target board using prebuilt evm image.

But nothing displayed on the console terminal.

Under this situation, would you tell me where to start?

I have downloaded TDA4 Custom bring up guide(spradc5.pdf), 

and Jacinto 7 DDRSS Register Configuration tool and excel.

All comments are appreciated.

  • 0
    TI__Mastermind 44580 points

    Hi,

    Are you using the same UART pins for terminal output? Are you using a switch to control the BOOTMODE pins, or how were those configured? 

    Are you able to connect to the device through JTAG? 

    Regards,
    Kevin

  • 0 in reply to Kevin S
    Prodigy 90 points

    I've tested UART mode using MCU_BOOTMODE and BOOTMODE.

    I've referenced the manual J721S2 TRM 4.3.2.3 Primary Boot Mode Configuration

    MCU_BOOTMODE
      -> Primary Boot Mode A [ON ON ON]
      -> MCU Only [OFF]

    BOOTMODE
     -> Primary Boot B [OFF]
     -> Primary Boot Mode Config [ON OFF OFF]

    If so,

    and then I have download tiboot3.bin file using Xmodem.


    It seems SOC works, but still not working uSD booting.
    MicroSD booting mode are as following

    MCU_BOOTMODE 
      -> Primary Boot Mode A [OFF OFF OFF]
      -> MCU Only [OFF]

    BOOTMODE 
     -> Primary Boot B [ON]
     -> Primary Boot Mode Config [OFF(filesystem) OFF(8bit) ON(mmc port1)]

    and after I don't know how to do next...

    Any comments are appreciated.