Thanks to @ShaneCCC first.
Now I’m trying to configuration AGX for use SPI1 function.
Because ShaneCCC helps a lot, I can understand
- How to build custom kernel from kernel source.
- How to flash kernel without SDKmanager
- How to modify PINMUX using [Jetson_AGX_Series_DevKit_Pinmux_Configuration_Template.xlsm].
And I think the only one step left.
It is maybe configure device-tree for SPI.
But at this point, I was confused about setting AGX xavier.
Based on the document below, it said I don’t need to change PINMUX and Device-tree that if I use JETSON-IO.
So, is it real that the time I spent for SPI(such as build kernel, make Pinmux, flash it …etc) is actually don’t needed if I use Jetson-io?