How to find kernel in Jetson

Hello guys, first im sorry if this topic seems easy for some people, but i really need help, how to find kernel/nvidia/sound/soc/codecs, i cant find kernel and followed by nvidia etc

I hope someone can help me…

This in my root directory
bin boot dev etc home lib lost+found media mnt opt proc README.txt root run sbin snap srv sys tmp usr var

This in my home directory
catkin_ws cmuSphinxrecog Desktop Documents Downloads examples.desktop installROS Music Pictures Public PyPro Templates Videos

I use Jetson Nano, and this is the detail

L4T 32.4.2 [ 4.3 ]
Ubuntu 18.04.4 LTS
Kernel Version: 4.9.140-tegra
CUDA 10.2.89


Wrong forum, specialized forum is Jetson NANO forum. But generically you should study basic LINUX principles - some modules are “embedded” in kernel (cat /lib/modules/$(uname -r)/modules.builtin) and other modules are in /lib/modules/(uname -r)/kernel (`find /lib/modules/(uname -r)/`). But “kernel/nvidia” is weird path for modules but OK path for sources (example - kernel/nvidia/sound/soc/tegra-alt/machine_drivers/tegra_machine_driver_mobile.c). There is no such path in my L4T32.4.2 for TX2.

Wow thank you for your response, it helped me!