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Linux/DRA718: booting fail.

Prodigy 130 points

Replies: 19

Views: 1218

Part Number: DRA718

Tool/software: Linux

Dear,

J6 Entry DRA718 1004.nu100_20180419-core-TI.pdfcan't boot from SD card (QSPI and eMMC are both empty), there isn't any message on UART1 TX.

My condition is

a. Power up sequence as LP8733-Q1 and LP8732-Q1 User’s Guide to Power J6Entry Figure 2. 

b. booting loader (518202 J6 entry EVM board version) in SD card.

c. choice SYSBOOT[5:0]= 0b100010 => SD boot.

d. Use 19.2MHz crystal on J6 Entry and sysboot[9:8] = 0b11 (19.2MHz is 518392 J6 ENTRY LOW REF version ).

e. reset signal (porz) is high.

We try to change booting loader to 518392 J6 ENTRY LOW REF version(download from web), but it still without any message on UART. 

(Maybe the download 518392 loader isn't correct.)

Could you advise me what to do?

Thanks a lot.

Ryan.

  • Hi Ryan,

    Could you please add details about the location from where you downloaded the 518392 loader? It is not very clear at the moment.

    Regards
    Karthik
  • In reply to Karthik Ramanan:

    Hello, Karthik,

    I download the uboot from

    www.ti.com/.../TIDEP-0097 ==>

    User guides (Cost-Effective In-Vehicle Infotainment System Reference Design)

    www.ti.com/.../tidudn2.pdf ==> Page 11 , uboot

    Thanks.

    Ryan.

  • In reply to Ryan Liao:

    Hi Ryan,
    Can you tell us what do you refer here by 518202 or 518392? What do these numbers refer?
    Can you paste the link from where you downloaded the software? Are you trying to boot Android on the EVM?

    Regards,
    Somnath
  • In reply to Somnath Mukherjee:

    Hello, Somnath,

    Sorry, I didn't make it very clear.

    518202 is Spectrum Digital EVM (DRA71x/DRA79x/TDA2Ex-17/AM570x CPU Board Kit) schematic document number.

    518392 is TI J6 ENTRY LOW REF EVM board schematic document number.

    I downloaded software from omappedia.org/.../6AM.1.3_Release_Notes.

    Thanks a lot.

    Ryan.

  • In reply to Ryan Liao:

    Hi,
    Thanks for letting us know about the detail.
    Are you trying to rebuild the U-boot or kernel?
    Are you trying to run this on the EVM itself? Has the EVM undergone any modification?

    Regards,
    Somnath
  • Hi Ryan,

    The reference software provided for 518392 board does not support SD card boot.
    Please follow the instructions in section 3.1.3 of the document for flashing the board using USB peripheral boot.

    http://www.ti.com/lit/ug/tidudn2/tidudn2.pdf

    Regards,
    Vishal

  • In reply to Somnath Mukherjee:

    Hi, Somnath,

     Yes, we rebuild U-boot and run on Spectrum Digital EVM ,

    but it still can't run on our PCBA.

    We don't do any modification on Spectrum Digital EVM board.

    Thanks.

    Ryan.

  • In reply to Vishal Mahaveer:

    Hi, Vishal,

    Since our PCBA don't have USB , so it hard to use 518392 reference software.

    Now we use Spectrum Digital EVM U-boot version, and try to use 19.2MHz setting.

    This U-boot can run on Spectrum Digital EVM, but can't run on our PCBA.

    Thanks.

    Ryan.
  • In reply to Ryan Liao:

    Hi Ryan,

    Is your PCBA similar to 518202 or 518392?
    You should use u-boot from one of our Android or Linux SDK releases.

    Regards,
    Vishal
  • In reply to Vishal Mahaveer:

    Hello, Vishal

    Our PCBA is similar 518202 (Spectrum Digital EVM ) besides DDR3L.

    We use two 16bits DDR3L as 518392 (TI J6 ENTRY LOW REF EVM board ).

    So we use Spectrum Digital EVM u-boot of Linux SDK.

    Thanks.

    Ryan.

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