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AM4378: Pinmux Tool warning

Part Number: AM4378


Let's say I want to use two pins assigned to GPIO's on the same GPIO Bank (e.g.: gpio0).

One of these pins (e.g.: G24 = gpio0_7) is on the VDDSHV3 power domain, which is supplied by 1.8V.

The other pin (e,g.: D17 = gpio0_11) is on VDDSHV6 power domain, which is supplied by 3.3V.

When I set this up in the PinMux tool, it display a "Voltage conflict" warning.

Why do we get this warning?  What is wrong with using two GPIO's in the same bank at different voltages?

There was a post with a somewhat similar type of question, where someone said the warning was a bug in the PinMux tool.  Is this warning a tool bug?