I’m trying to make two seemingly minor changes to the GPIO on the TX2: first, I want to change the output voltage of the GPIO11_AP_WAKE_BT signal to 3.3V; and second, I want the default output of GPIO12_BT_EN to be 0. I followed the steps of modifying the pinmux Excel file to generate dtsi files that I included in my device tree, but after some work in getting them to compile or work at all, they still didn’t result in either of the behaviors I want.
Perhaps these changes also need to be in the BCT cfg files? I generated those following the instructions for the pinmux-dts2cfg script, but the resulting files modify a lot more pins than the one I changed, and since the system boots reliably already, I’m loath to mess the bootloader.
So I have three questions:
- Should these changes be possible? If not, we're going to have to add level shifters to our carrier board.
- Do I need to make them in the BCT files as well? (Are there other places?)
- What is the command to flash the BCT files? I'm guessing ``` sudo ./flash.sh -r -k BCT jetson-tx2 mmcblk0p1 ```