r32.3 UBoot PinMux settings. Is documentation wrong?

If anyone wants to flash the DTB then this is how you do it. Ignore the documentation.

https://devtalk.nvidia.com/default/topic/1070001/jetson-nano/gpio-cnf-registers-driving-me-crazy-since-r32-3-1/post/5420815/#5420815

Hi peterxr95h,

Yes, if you want to change your pinmux and Gpio defaults for r32.3 then you need to flash your DTB into the bootloader DTB partition with the above command, or do a full flash.

However, if you want to change the dtb for kernel part, then you still need to flash with “DTB” partition.

Is there a step by step procedure to replace Porting U-Boot?
Should I follow “Customizing the Jetson Nano 40-pin Expansion Header” but skip the section “Update the U-Boot Pinmux”?

Hi,

You could use either jetson pinmux spreadsheet or using jetson-IO tool to configure it directly.

For jetson-IO you could refer to the L4T development guide.