[L4T 32.3.1] Add second watchdog timer to Nano

Robotics & Edge Computing Jetson & Embedded Systems Jetson Nano
1

Hello,

We are trying to add custom watchdog functionality to our product.
By default, we have /dev/watchdog and /dev/watchdog0, but based on this documentation, it seems those both refer to the same timer: https://www.kernel.org/doc/Documentation/watchdog/watchdog-kernel-api.txt.

I believe there are 5 WDTs on the Nano, so how do I go about adding another one?

3

Not sure if you want to add another WDT HW to the system?
If so you need to driver for the chip and device tree configure to enable it.