I saw another thread (How to use PWM on Xavier NX - #34 by Andrey1984) to configurate PWM for GPIO, but I still have some questions.
In that thread, just need use jetson-io to enable PWM pins, dont need modify pinmux spreadsheet and convert to cfg file. As I know the PWM pin configuration should be saved in HW configuraiton in bootloader. Will jetson-io tool be able to save the PWM pin configuration in bootloader configuration?
Another thing is if I use pinmux spreadsheet to modify and convert to cfg file, how can I just flash this cfg file to device? I dont want to flash all images like kernel and root filesystem?