I’m in the same situation Uart1 on our board is used to communicate with MCU
Jetpack 4.x is worked but 5.x is not worked
But there is no solution. Then Uart1 can’t use?
May I ask how to disable printing UFEI info to uart1 port ?
You can disable the uart in uefi device tree first so that UEFI won’t init it.
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