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.
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