Fu Wei wrote:
Actually I am taking your suggestion to avoid touching WCV in
interrupt routine.
So even we have pre-timeout support , it is useless for this
panic-on-half-timeout feature,
because pre-timeout  == timeout / 2 (always).

So maybe I misunderstand your suggestion,
could you let me know : why we want pre-timeout here?

Maybe I'm confused.

For pre-timeout, I think the SBSA watchdog driver should support only half-timeout. That is, the user cannot configure the length of the pre-timeout with this driver. He can only enable it, and it is automatically set to 1/2 timeout.

So when pre-timeout occurs, the interrupt handler calls panic() or whatever it's supposed to do.

So "pre-timeout  == timeout / 2 (always)" is exactly what we want.

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