Hi teva.zanker,
Are you using the devkit or custom board for Orin Nano?
What’s the Jetpack version in use?
You can also refer to Calculating/Getting register adresses of gpio pins - #7 by jost38 for PADCTL register.
Please also note that they are only valid in runtime (i.e. you should them again after reboot)
Actually, there’re 3 device tree files(pinmux.dtsi, gpio.dtsi, padvoltage.dtsi) generated from pinmux spreadsheet. They are configured in MB1(early boot). The pinmux.dtsi can only configure the PADCTL register. gpio.dtsi would also configure the default pin state during boot.
We would still suggest configuring pinmux spreadsheet → replace related device trees → reflash the board to apply the change.