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Date: Thu, 4 Feb 2016 16:31:02 +0000
From: Will Deacon <will.deacon@arm.com>
To: fu.wei@linaro.org
Cc: robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com,
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Subject: Re: [PATCH v10 4/5] Watchdog: introduce ARM SBSA watchdog driver
Message-ID: <20160204163101.GH17257@arm.com>
References: <1454519923-25230-1-git-send-email-fu.wei@linaro.org>
 <1454519923-25230-5-git-send-email-fu.wei@linaro.org>
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On Thu, Feb 04, 2016 at 01:18:42AM +0800, fu.wei@linaro.org wrote:
> +static int sbsa_gwdt_keepalive(struct watchdog_device *wdd)
> +{
> +	struct sbsa_gwdt *gwdt = to_sbsa_gwdt(wdd);
> +
> +	/*
> +	* Writing WRR for an explicit watchdog refresh.
> +	* You can write anyting(like 0xc0ffee).
> +	*/
> +	writel(0xc0ffee, gwdt->refresh_base + SBSA_GWDT_WRR);
> +
> +	return 0;
> +}

You might get in trouble for that. 0xd09f00d is probably less poisonous.

http://www.petpoisonhelpline.com/poison/caffeine/

Will