Hello every one, I am new here as well as to u-boot code. I am using nvidia's Jetson TX2 board. I got my self into this task of modifying the u-boot source to add additional uart port for the TX2 board. All I have learnt now is to build and flash the u-boot to the device.

The TX2's U-boot that comes with the the board uses UART0 as the debug console. I want to enable additional uart to the u-boot, say uart1. I want to modify the u-boot code to wait for some commands on this port to make booting decisions. I don't know which files to modify. I tried looking into the source code of u-boot and I am unable to figure out where the uart parameters are set.

Given that the jetson tx2 board uses Arm Cortex A57 cpu (which is an ARMv8 chip - if I am right) should I be looking into the folder u-boot/arch/arm/cpu/armv8 for enabling uart1/uart2 ? Or is this a board specific modification that needs to be done ?

Is my attempt to enable additional UART possible in the first place?

Thanks and Regards, Vinmean

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