Can't get spi0 pinmux to take effect

Robotics & Edge Computing Jetson Systems Jetson Orin Nano
30

Thank you, I’ll take a look at that TRM doc.

Here is my full dmesg:
dmesg_output.txt (65.2 KB)

31 
[   16.261845] spi-tegra114 3210000.spi: Adding to iommu group 2
..
[   16.269852] spi-tegra114 3230000.spi: Adding to iommu group 2

From the dmesg you shared, /dev/spidev0.0 should be created by 3210000.spi as it is probed earlier.
Please simply short MISO and MOSI and run the following commands to verify SPI loopback test.

$ wget https://raw.githubusercontent.com/torvalds/linux/v4.9/tools/spi/spidev_test.c
$ gcc -o spidev_test spidev_test.c
$ sudo ./spidev_test -D /dev/spidev0.0 -v -p "HelloWorld123456789abcdef"
32

We are in the process of moving to a new location so I won’t have access to the lab till Monday. I’ll try what you suggested then and give you an update.

33

Sorry, I will reply to you on the 30th.

34

Is this still an issue to support? Any result can be shared?

35

Hey! Yes it is still an issue, but I’ve been assigned another priority for the moment. Could you keep this open till next week?

37

Hi SterlingArcher,

Have you verified the commands I shared on 11/Dec.?
Please let us know if the SPI loopback test works in your case.