I've searched briefly, apologies if the question is redundant.
With dtparam=watchdog=on, I can have linux load the watchdog device. So it activates once linux has been loaded.
Is there a way to start/reset the device directly from the device tree? Basically I want watchdog to reset the system if for some reason loading linux fails/takes more than 15 secs.
Thanks in advance
Background: I'm trying to get u-boot to work with watchdog. I want the dog to start counting as soon as u-boot starts; I expect to reset it right before linux boot, and have a running linux under 15 secs, at which time a userland daemon will take over control of the device.
I'm still looking for uboot's "watchdog (load|start|stop)" command, not sure it exists... But I can manipulate the DT before starting linux, hence the question.