AGX orin hardware watchdog question

[ruei_chang]

Jetpack 6.2, Ubuntu 22.04 kernel 5.15.148:

Issue Description:
Hello Nvidia team,

Wanna confirm if there is hardware watchdog in AGX Orin?

There is a pin which name is WDT_RESET_OUT_N(B54). However, I found KevinFFF said the B54 is not support yet, but the WDT should still work. Is the answer same as Jetpack 6.2? What’s the purpose of WDT_RESET_OUT_N?

Use-case NVIDIA AGX ORIN WDT_Reset(B54)

I’ve moved your topic to correct category for AGX Orin. No, you don’t need the external connection for watchdog feature. There’s the existed node for watchdog to configure the timeout. (120s as default). WDT_RESET_OUT_N is used to notify the peripherals for watchdog triggered, you could find more details in the following topic. How does external MCU know that xavier get watchdog reset - Jetson & Embedded Systems / Jetson AGX Xavier - NVIDIA Developer Forums

Also, I found other article, Trumary said Orin module has own internal WDT. This is not the WDT_RESET_OUT_N, is it? And does this internal WDT work as hardware watchdog?

Orin NX；hardware watchdog

Is the hardware watchdog integrated on the Orin NX module integrated inside the CPU or exists independently of the CPU on the module?

The final question is… if I’d like to enable the hardware watchdog, can I follow the article to implement the function?

How to enable PMIC WDT on Orin DevKits

Hi, I’m trying to use the built in Watchdog features of the Jetson AGX Orin DevKit. Is there a PMIC WDT like in the previous versions and how do i enable it? I can’t find files containing ODMDATA like in the TX2 for example. Best Regards