according to my understanding of the spreadsheet “Jetson_Orin_NX_series_and_Orin_Nano_series_Pinmux_Config_Template.xlsm” many SODIMM pins of the Orin Nano module have a secondary pin assignment, mostly GPIOs. So the number of GPIOs (beside the 15 native GPIOs) might be extended by the assignment of such a secondary function. For example, HDMI_CEC (SODIMM Pin #94), CAN_TX (#145) and CAN_RX (#143), … can be set up for customer usage as GPIO according to the spreadsheet, am I right? Is there anything special to consider when using / configurating these GPIOs?
Is there a document available describing the Pinmux spreadsheet? Some columns of the table or unclear for me.
Is there a detailed documentation how to implement the generated dts-file in the Linux OS to activate the Pinmux functionality?
Currently I use a Seeed Studio reComputer J3010 Orin Nano 4 devkit, but it might merge into the development of a custom board.
I want to use JetPack 6 but I’m stuck with the installation of JP6 on SSD (used devkit has no SDcard) - but not the topic here.
I’m still looking for a documentation for the Pinmux spreadsheet “Jetson_Orin_NX_series_and_Orin_Nano_series_Pinmux_Config_Template.xlsm”. Not all issues in it are self-explaining (at least not for me).
Please use your custom BSP package with the custom board config.
For the steps to flash external NVMe SSD, you can refer to Linux_for_Tegra/tools/kernel_flash/README_initrd_flash.txt for details.