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Date: Wed, 5 Aug 2009 19:37:04 +0800
Message-ID: <e68bb3470908050437ma86dddem7621bb7d0da82607@mail.gmail.com>
Subject: Re: [PATCH] Add watchdog driver for w90p910
From: Wan ZongShun <mcuos.com@gmail.com>
To: Wim Van Sebroeck <wim@iguana.be>
Cc: linux-arm-kernel <linux-arm-kernel@lists.arm.linux.org.uk>,
       linux-kernel <linux-kernel@vger.kernel.org>
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Dear Wim,


>> +static irqreturn_t w90p910_wdt_irq(int irq, void *dev_id)
>> +{
>> +     w90p910_wdt_keepalive();
>> +     return IRQ_HANDLED;
>> +}
>
> How does the interrupt work? what does the watchdog do when it times out?
> (Is there a datasheet available somewhere?)
>

Here is the w90p910 datasheet link, now the ic was renames nuc910.
Maybe you can give me a good idea,
hmm, regarding the timer as your mentioned (at91sam9_wdt.c), I am
studying it and will resubmit a updated patch to you. thanks a lot for
your help !

http://www.nuvoton-usa.com/hq/enu/ProductAndSales/ProductLines/ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller/NUC910A.htm


>
>> +static int w90p910_wdt_settimeout(int new_time_level)
>> +{
>> +     unsigned int val;
>> +
>> +     if ((new_time_level < 0) || (new_time_level > WDT_MAX_TIME_LEVEL))
>