Part Number: TDA4VMXEVM
Dear Sir or Madam,
With the latest firmware and previous versions for TDA4EVM (on both E6 and E7 version), we have found a booting issue from emmc against booting from tf card. The same firmware was burned to emmc and tf card, and the system behaved differently with these two methods.
With tf card, the system seemed running fine and demo applications (such as tidl) can be used without an error, but with booting from emmc, the starting page and an error message appeared as below when running a vision app.
what could be the possible reason for this?
Secondly, regarding uboot setting for booting from either mmc or tf card, we toggled SW8 and SW9 's first port on the board and tried to start uboot from emmc or tf card. We tried either port 1 or port 0 for boot setting, uboot always boot from emmc (port 0). What could be the reason for this?
Thirdly, in uboot we set ums 0 mmc 0, then mount emmc, then try to write the firmware onto it, and it takes around 40 minutes for this process, using either install_to_sd_card.sh or mke linux_fs_install_sd. The same process only takes 3 to 4 minutes on tf card. How to improve the efficiency with emmc?
Thanks,
Yanbo