From mboxrd@z Thu Jan  1 00:00:00 1970
From: Timur Tabi <timur-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
Subject: Re: [PATCH v2 6/7] Watchdog: introduce ARM SBSA watchdog driver
Date: Sun, 24 May 2015 12:19:04 -0500
Message-ID: <55620808.4030605@codeaurora.org>
References: <=fu.wei@linaro.org>	<1432197156-16947-1-git-send-email-fu.wei@linaro.org>	<1432197156-16947-7-git-send-email-fu.wei@linaro.org>	<555DFCD4.3040701@codeaurora.org>	<CADyBb7vpC6ihvkrRG-htCS8-_xRkjtny=9ZGQsCsmK7-ng5AxA@mail.gmail.com>	<5560D7AC.50009@codeaurora.org>	<5560DCB6.3090008@roeck-us.net>	<CADyBb7t7+aT=pF0we5umAGXJAJ0njU0zULFAZ-OHVpE0m=ueyg@mail.gmail.com>	<5561E7EA.5090702@codeaurora.org>	<CADyBb7tYL7ATRKNAoRYTXo53LKdCiFZ2YDib4g0nZ8=YxTgO+A@mail.gmail.com>	<5561F8A8.4080607@codeaurora.org>	<5561FC70.5080802@roeck-us.net>	<5561FFF0.5090108@codeaurora.org> <CADyBb7snhcR43KT_xrFipBH3PBNBfj39-hE-mSjJ3vMb7Ehp+A@mail.gmail.com>
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To: Fu Wei <fu.wei-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Cc: Guenter Roeck <linux-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org>, Suravee Suthikulpanit <Suravee.Suthikulpanit-5C7GfCeVMHo@public.gmane.org>, Linaro ACPI Mailman List <linaro-acpi-cunTk1MwBs8s++Sfvej+rw@public.gmane.org>, linux-watchdog-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-doc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Wei Fu <tekkamanninja-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, G Gregory <graeme.gregory-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>, Al Stone <al.stone-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>, Hanjun Guo <hanjun.guo-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>, Ashwin Chaugule <ashwin.chaugule-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>, Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>, vgandhi-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org, wim-IQzOog9fTRqzQB+pC5nmwQ@public.gmane.org, Jon Masters <jcm-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>, Leo Duran <leo.duran-5C7GfCeVMHo@public.gmane.org>, Jon Corbet <corbet-T1hC0tSOHrs@public.gmane.org>, Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>
List-Id: devicetree@vger.kernel.org

Fu Wei wrote:
> I don't know why you want to do this tricky way.  you can always
> register the interrupt handler,
> if pre-timeout is 0, system will just trigger WS1 right after WS0

But that only works if the pre-timeout and timeout can be programmed to 
separate values.  And as Guenter says, the SBSA may not guarantee that.

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