IMX8QXP watchdog enable

[gravity_one]

Dear Guys,

I want to enable SOC watchdog, and refer to link: https://community.nxp.com/t5/i-MX-Processors-Knowledge-Base/SCFW-Enable-PMIC-external-watchdog-for-i...

but i do not know how to test?

Q1, SOC kernel halted whether PMIC watchdog will reset SOC?

Q2, SOC kernel halted whether SUC still will run?

Q3, i want to prevent Linux kernel system into halt, can this PMIC watchdog be achieved?

Brs,

Gravity

[Harvey021]

Hi @gravity_one 

SoC watch dog is enabled by default in SCFW, if SCFW crashes, it will reset the whole chip.

For A35 or M4 side, they can also enable their own watchdog, then when no service to the watchdog, the A35 or M4 will reset,

this will not cause whole SoC reset.

/unit_tests/watchdog/wdt_driver_test.out 5 5 0

this is the test command to enable the Linux kernel's watchdog.

Best regards

Harvey