To install modules

On the target, determine whether following modules are loaded, by running the lsmod command in the Linux shell.
```
can-raw.ko
can.ko
can-dev.ko
mttcan.ko
```
If the modules did not load, determine if they are in following directory:
```
/lib/modules
```
If the modules are not in this directory, use menuconfig to enable the CAN kernel module. The instructions are in steps 6 and 7 in Compiling the Kernel (Kernel 5.15).

In menuconfig, select following CAN modules.

make -C kernel O=${PWD}/out-linux 
DEFCONFIG_PATH=$PWD/t23x/arch/arm64/configs menuconfig
[*] Networking support --->
    <M> CAN bus subsystem support ---> 
    <M> Raw CAN Protocol (raw access with CAN-ID filtering)
    <M> CAN Device Drivers --->
    <M> Platform CAN drivers with Netlink support
    <M> Bosch M_TTCAN Devices

Exit and save.
Rebuild the kernel and copy the kernel Image from the kernel out directory to:
```
drive-linux/kernel
```
For additional information, refer to Compiling the Kernel (Kernel 5.15).
Reflash the target.
For additional information, see Flashing.
Load all required modules.
```
# modprobe mttcan
```
This command assumes module dependencies are properly set.

If the modprobe command fails, manually load the modules:

insmod /lib/modules/<KERNEL_VERSION>/kernel/net/can/can-raw.ko
insmod /lib/modules/<KERNEL_VERSION>/kernel/net/can/can.ko
insmod /lib/modules/<KERNEL_VERSION>/kernel/drivers/net/can/can-dev.ko
insmod /lib/modules/<KERNEL_VERSIONextra/drivers/net/can/mttcan/mttcan.ko

Note:

The <KERNEL_VERSION> is in the form of x.x.xx-rtxx-tegra. For example, 5.15.116-rt-tegra.