DRA821U: Create SD Card using balenaEtcher(tisdk-default-image-j7200-evm.rootfs.wic) , inserted the Micro SD . switch on the power, how to know boot successfully or not?

Please follow the documentation --> 

[2] https://software-dl.ti.com/jacinto7/esd/processor-sdk-linux-j7200/10_00_07_03/exports/docs/linux/Overview/Processor_SDK_Linux_create_SD_card.html

[1] https://software-dl.ti.com/jacinto7/esd/processor-sdk-linux-j7200/10_00_07_03/exports/docs/linux/How_to_Guides/Hardware_Setup_with_CCS/J7200_EVM_Hardware_Setup.html

Connect the micro USB cable b/n [1] (shown in the figure below) to the Linux PC. This will connect the MAIN_UART ( 4x main UART devices) and register /dev/ttyUSB[0-3] in your Linux machine. Open /dev/ttyUSB0 using your favorite terminal app like minicom (at 115200 baud 8 stop bits no parity) to see the boot logs.

Thanks.

Thank you for having seen the boot logs.

My main work is using1588-2008, and using PPS (pulse per second), in other word" the PTP", can you give me some information on the road maps?