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OmapL138 UART2 boot error .

Other Parts Discussed in Thread: OMAPL138, TPS65023, OMAP-L138

Hi ,

Using OMAPL138 evm board( from 3rd company ) , we cann't download UART ais file from COM1. But it is OK when using HAWKBOARD.the error info is

(File IO): Read 414964 bytes from file D:\u-boot_uart_ais_v1.bin.
(Serial Port): Opening COM1 at 115200 baud...
(AIS Parse): Waiting for BOOTME... (power on or reset target now)
(AIS Parse): Read invalid BOOTME string.
(AIS Parse): Boot aborted.
(Serial Port): Closing COM1.
--------------------------------------------------

We have monitored the uart port, When using HAWKBOARD and press RESET ,  output string is "42 4F 4F 54 4D 45 20 00 " , while ourboard send "00 42 4F 4F 54 4D 45 20 00 " .

using our board , when reset is pressed ( the reset key is connect to TPS65023's HOT reset pin ) , "00" is always sent.

So I wonder , is it boart's problem or OMAPL138's problem?