thank you, I understand what you meant.
I believe a small miscommunication has happened as I hadn’t told my purpose.
We are trying to implement a eMMC instead of external sd card with our SOM with eMMC , thus our product will be having 2 eMMC’s.
This is a case in continuation of “External eMMC support for Jetson Nano”
we had been told to try it , it seems possible as seen from case “How to flash the OS to external eMMC”
since eMMC can’t handle more than 1v8 ,we are trying to make sure clocks and data lines of sdmmc3 doesn’t exceed 1v8.
from the cases, I have checked it seems possible with software configurations and no hardware changes.
That is why to my previous question
if in pinmux sheet the voltage is set to 1v8.
no other changes except enabling sd card.
now after flashing data lines and clock of sdmmc3 , shouldnt it still be 1v8 according to what i read, or still there is a chance of voltage to go to 3v3 that can damage eMMC.