On Thu, Feb 04, 2016 at 01:18:42AM +0800, fu.wei@xxxxxxxxxx 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 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html