[PATCH 0/3] DSPBRDIGE: Implement WDT3 to notify DSP hangs

[PATCH 0/3] DSPBRDIGE: Implement WDT3 to notify DSP hangs

[Guzman Lugo, Fernando]

Hi All,

	This set of patches implement wdt3 to detect when DSP hangs, there are the mail features:

	- Added to catch DSP hang or crash which is not caught by MMU 			faults or exceptions.
	- This can also catch the tight loop in the DSP.
	- WDT3 (IVA2 WD) causes an interrupt to ARM in the event of 			overflow.
	- MPU configures the IVA2 WD.
	- DSP periodically re-loads the counter in order to avoid the overflow 			when active.
		* Reload occurs in the IDLE task.
		* Reload also occurs when the interrupt is sent back to MPU.
	- WD is disabled when IVA go to OFF and enabled when coming out OFF.
	- WD will be delivered disabled by default.  It can be enabled with 		the sysfs entry.
	- WD timer value will also be configurable through sysfs entry.

Regards,
Fernando.