How to disable uart1 during UEFI in JP5.0DP

I’m Using JP5.0DP, on my board there is a hardware mistake in PCB, on uart1, my TX was connected to RX only during UEFI. When in OS I can do some modify to disable this uart when Kernel was loading(by change dtb). it is sure that the best solution was hardware change. But I still need some walkaround from software/firmware site.

I want to know is there any solution to disable UART1 during UEFI(Only disable it during UEFI was OK), like modify DTB file that UEFI use or change some configuration file ?

Hi,

You can disable it in the device tree first.

Thanks for your replay ,I had delete it from device tree, it works.

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