Rock Pi S with 3 UART (Hardware v1.1)

Hello,

i have all 3 UART enabled and only UART 0 and UART 1 works. UART 2 isn’t working at all. Is there any known issue? I currently need all 3 of them.

Thanks & Regards.

Update:

both pins (rx/tx) work in GPIO mode as expected but as UART2 this pins doesn’t work.

It seems the Kernel DTS is buggy. This ugly patch will fix it: https://pastebin.com/a0xw6CMX
But it will disable wireless and uart0 rts/cts functions but it works for me because i have a no wifi board.
Would be nice if you can fix it in the future.

The next problem is u-boot, it will stop the autoboot if there is any data on UART0 …

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