Enabling SPI in jetson TX2 makes GPIO irresponsive

Robotics & Edge Computing Jetson & Embedded Systems Jetson TX2
1

A first I had faced many problems to enable SPI in jetson TX2. Finally I managed to show SPI3.0 in

ls /dev

command by following

https://devtalk.nvidia.com/default/topic/1024806/jetson-tx2/how-to-enable-spi-spidev-on-28-1-on-target-/

and

https://elinux.org/Jetson/TX2_SPI

Then I came to know that this kernel editing and Device tree compiling process makes my GPIO unstable. I mean that the below commands are not working as expected.

echo 300 > /sys/class/gpio/export
echo "out" > /sys/class/gpio/gpio300/direction
echo 0 > /sys/class/gpio/gpio300/value

What is the reason behind it? And how can we avoid the problems and enable spi without affecting anything
?
I need your help to this and we may upload a better documentation for inexperienced people.

2

It could be this GPIO pin are multiple function pin with SPI. You only can program it as one function.
What’s the GPIO pin name for the gpio300?

3

Hi niliptas,

Have you managed to get the SPI enabled on your carrier board?
Any result can be shared?

Thanks