Re: [PATCH 3/6] ARM: PSCI: Register with kernel restart handler

From: Wolfram Sang
Date: Thu Apr 14 2016 - 04:53:38 EST



> That makes things quite tricky. Best I can think of is a series of boolean
> devicetree properties, such as
>
> broken-reset-handler
> last-resort-restart-handler
> secondary-restart-handler
> default-restart-handler
> primary-restart-handler
>
> which ends up being quite similar to the 'restart-priority' property. I'll
> do this as follow-up patch, though

Please CC me on this. I wanted to tackle this problem as well today. My
findings/conclusions so far:

* There is one driver bringing 'priority' directly to DT already: gpio-restart

* Watchdog priorities are board dependant

* Having the priorities clear at boot-time is safer than configuring them
at run-time

* The linux scheme (0-255) shouldn't be enforced in DT

So, I wondered about a "priority" binding which just states "the higher,
the more important". Then any OS can decide what to do with it. In the
Linux case, this could be: sort them and give them priority 256 -
position_in_sorted_list.

Opinions?

> - I do not see the point holding up the series for this, and it is
> really a separate problem.

Ack.

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