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AM3352: UART boot issue

Part Number: AM3352

Hi

I tested boot from uart in two sdk environments.

1. sdk version : ti-sdk-am335x-evm-08.00.00.00

make -C /home/user/ti-sdk-am335x-evm-08.00.00.00/board-support/u-boot-2014.07-g7e537bf ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- am335x_evm_spiboot_config all

2. sdk version : ti-processor-sdk-linux-am335x-evm-04.03.00.05

make -C /home/user/ti-processor-sdk-linux-am335x-evm-04.03.00.05/board-support/u-boot-2017.01+gitAUTOINC+c68ed086bd-gc68ed086bd ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- am335x_evm_config all

In the first sdk, uart booing was done normally.

But on the second sdk,  I could not run Send Ymodem. Below is a related log.

Starting xmodem transfer.  Press Ctrl+C to cancel.
Transferring u-boot-spl.bin...
  100%      64 KB       8 KB/sec    00:00:08       0 Errors 

After the Send Xmodem is completed, 'C' is displayed and then 'Send Ymodem' is proceeded but 'C' is not displayed.

I'd like you to check it out.