How to config UARTC rx/tx/rtx/cts power domain to be 1.8v

VIM3
1

Which Khadas SBC do you use?

VIM3

Which system do you use? Android, Ubuntu, OOWOW or others?

Ubuntu 22.04

Please describe your issue below:

now i found uartC default power domain is 3.3v, but i want to use 1.8v to be uartC power domain,
how should i change?
i don’t want to change vim3 hardware design, is there software method to implement the requirement?
image

thanks.

2

Hello @joseph123

It is not supported to change the voltage.