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AM62L: AM62L EVM Reduced Pincount boot mode support

Kangjia Dong
Intellectual 2245 points
Part Number: AM62L

Tool/software:

Dear expert,

Our customer find the following boot mode that box with red not worked on our AM62L EVM but box with green was fine. Could help double confirm which boot mode are verified on the EVM?

  • 0
    TI__Guru**** 169071 points

    Hi Kangjia,

    Kangjia Dong said:
    Our customer find the following boot mode that box with red not worked on our AM62L EVM

    Can you please provide the details about how those boot modes "not worked" on the EVM?

  • 0 in reply to Bin Liu
    TI__Intellectual 2245 points

    Bin,

    It no log output on the UART console.

  • 0 in reply to Kangjia Dong
    TI__Guru**** 169071 points

    Hi Kangjia,

    Please take one of the failure modes as an example, and explain how exactly the customer tested it. I will follow your procedure to replicate it and take a look.

  • 0 in reply to Bin Liu
    Prodigy 30 points

    emmc boot：

    The eMMC boot method follows the instructions in Section 4.1.2 of the Processor SDK Guide:
    software-dl.ti.com/.../How_to_emmc_boot.html writing to the eMMC boot0 partition and configuring the eMMC to boot from boot0, the device can power up and boot successfully the first time. However, upon subsequent power cycles (power-off and power-on), the system fails to boot. The observed issue is consistent with the one described in this link:
    e2e.ti.com/.../5730156

    usb0：

    Format a USB flash drive to FAT32 (and create a proper partition table), then copy tiboot3.bin, tispl.bin, and u-boot.img to the USB drive. It can boot successfully using the Full Pincount configuration, but fails to boot using the Reduced Pincount configuration.

    OSPI:

    The OSPI boot method follows Section 3.1.1.5 of the Processor SDK Guide, titled "Flashing images to OSPI NOR using SD card." After flashing, when the DIP switches are set to OSPI boot mode, there is no printout or console output.

  • 0 in reply to zhang pan
    TI__Guru**** 169071 points

    Booting from eMMC boot partition is not supported on AM62Lx SR1.0. This is documented in Errata i2473. Using UDA is recommended.

    USB MSC boot mode is not validated in current SDK on SR1.0 devices. I just tested it on my AM62L EVM but see different behavior - in full pincount mode, ROM can boot tiboot3.bin, but stopped running tispl.bin.

    For OSPI boot mode, I am not sure what what the story is. If you really need to use OSPI boot on SR1.0, please create a separate e2e thread, our SPI expert will provide comments.