TDA4VP-Q1: HS-FS USB-Bootmode: DFU device is lost after tiboot transfer

Hi Andreas,

Andreas K said:

I can boot the TDA4VP HS-FS SoC in UART and USB Bootmode just fine. However, after DFU-downloading the `tiboot3-j784s4-hs-fs-evm.bin` to the TDA4, the USB-DFU connection is lost and I am getting no MCU_UART output

The logs would ideally come in main uart . Please can you check the logs there.

Also can you share the output of the command "sudo dfu-util -l " after sending the tiboot3.file.

Regards

Gokul

Hi Gokul,

I connected the main UART, but I don't see any output.

This is the complete dfu-util output:

$ dfu-util -l
dfu-util 0.9

Copyright 2005-2009 Weston Schmidt, Harald Welte and OpenMoko Inc.
Copyright 2010-2016 Tormod Volden and Stefan Schmidt
This program is Free Software and has ABSOLUTELY NO WARRANTY
Please report bugs to http://sourceforge.net/p/dfu-util/tickets/

Found DFU: [0451:6167] ver=0200, devnum=5, cfg=1, intf=0, path="1-1", alt=1, name="SocId", serial="01.00.00.00"
Found DFU: [0451:6167] ver=0200, devnum=5, cfg=1, intf=0, path="1-1", alt=0, name="bootloader", serial="01.00.00.00"

$ dfu-util -R -a bootloader -D board-support/ti-u-boot-2024.04+git/build/r5/tiboot3-j784s4-hs-fs-evm.bin
dfu-util 0.9

Copyright 2005-2009 Weston Schmidt, Harald Welte and OpenMoko Inc.
Copyright 2010-2016 Tormod Volden and Stefan Schmidt
This program is Free Software and has ABSOLUTELY NO WARRANTY
Please report bugs to http://sourceforge.net/p/dfu-util/tickets/

dfu-util: Invalid DFU suffix signature
dfu-util: A valid DFU suffix will be required in a future dfu-util release!!!
Opening DFU capable USB device...
ID 0451:6167
Run-time device DFU version 0110
Claiming USB DFU Interface...
Setting Alternate Setting #0 ...
Determining device status: state = dfuIDLE, status = 0
dfuIDLE, continuing
DFU mode device DFU version 0110
Device returned transfer size 512
Copying data from PC to DFU device
Download	[=========================] 100%       478515 bytes
Download done.
state(6) = dfuMANIFEST-SYNC, status(0) = No error condition is present
state(2) = dfuIDLE, status(0) = No error condition is present
Done!
dfu-util: can't detach
Resetting USB to switch back to runtime mode
$ dfu-util -l
dfu-util 0.9

Copyright 2005-2009 Weston Schmidt, Harald Welte and OpenMoko Inc.
Copyright 2010-2016 Tormod Volden and Stefan Schmidt
This program is Free Software and has ABSOLUTELY NO WARRANTY
Please report bugs to http://sourceforge.net/p/dfu-util/tickets/

Best regards,

Andreas

Hi Gokul,

some additional information: I had to change the UART pinmux, because it is connected different compared to the EVM board.

After I swapped to the MCU_UART0 as stdout, I got this output:

U-Boot SPL 2024.04-ti-dirty (Sep 09 2025 - 10:08:00 +0200)
SYSFW ABI: 4.0 (firmware rev 0x000a '10.1.6--v10.01.06 (Fiery Fox)')
Timeout during frequency handshake
### ERROR ### Please RESET the board ###

What could be the cause of this problem? Also, is there a way to get additional debug output?

Best regards,

Andreas

HI Andreas,

Can you share the boot logs after booting through UART BOOT mode.

Regards

Gokul

Hi Gokul,

when trying to transfer the tiboot.bin through UART Bootmode, the minicom xmodem transfer only receives NACKs. I think this might be a different problem, that's not really worth looking into.

The UART output I shared before already gives the hint that the DDR configuration from DDRSS RegConfigTool must be updated.

Would you agree?

Regards,

Andreas