Hello,
I'm working with an ITX-P-C444 imx8mq board. I'd like to completely disable all watchdog services, drivers, and hardware at build time (not in the user-space). I'm using a Yocto environment. I want to avoid modifying drivers/source code and keep all modifications in the configs. Is this possible?
I've tried setting the u-boot configs:
CONFIG_WATCHDOG_TIMEOUT_MSECS=60000
CONFIG_HW_WATCHDOG=n
CONFIG_SPL_HW_WATCHDOG=n
CONFIG_IMX_WATCHDOG=n
CONFIG_SPL_WATCHDOG=n
CONFIG_WATCHDOG=n
CONFIG_WATCHDOG_AUTOSTART=n
CONFIG_WDT=n
CONFIG_WATCHDOG_RESET_DISABLE=n
and the kernel configs:
CONFIG_SOFT_WATCHDOG=n
CONFIG_IMX_SC_WDT=n
CONFIG_IMX2_WDT=n
CONFIG_WATCHDOG_HANDLE_BOOT_ENABLED=n
This partially works. I don't see the watchdog devices under /dev/. However, the board will reboot at a 60s cycle (the default WDT timeout). In addition, the u-boot log shows :
U-Boot 2021.04+fio+g38c3083e39 (Feb 16 2022 - 14:50:02 +0000)
CPU: i.MX8MD rev2.1 1300 MHz (running at 800 MHz)
CPU: Industrial temperature grade (-40C to 105C) at 45C
Reset cause: POR
Model: WINSYSTEMS i.MX8MQ ITX-P-C444
Watchdog enabled
This last line indicates that the watchdog is either enabled before U-boot or in the U-boot environment and thus my configurations aren't working as I thought they would. Am I missing something? Any help would be greatly appreciated!
