drivers/watchdog/rti_wdt.c

26 /* Max heartbeat is calculated at 32kHz source clock */
64 static int heartbeat;
141 		/* 50% open window => 52% min heartbeat */
142 		wdd->min_hw_heartbeat_ms = 520 * heartbeat + MAX_HW_ERROR;
146 		/* 25% open window => 77% min heartbeat */
147 		wdd->min_hw_heartbeat_ms = 770 * heartbeat + MAX_HW_ERROR;
151 		/* 12.5% open window => 89.5% min heartbeat */
152 		wdd->min_hw_heartbeat_ms = 895 * heartbeat + MAX_HW_ERROR;
156 		/* 6.5% open window => 95.5% min heartbeat */
157 		wdd->min_hw_heartbeat_ms = 955 * heartbeat + MAX_HW_ERROR;
161 		/* 3.125% open window => 98.9% min heartbeat */
162 		wdd->min_hw_heartbeat_ms = 989 * heartbeat + MAX_HW_ERROR;
282 		if (preset_heartbeat != heartbeat)
283 			dev_warn(dev, "watchdog already running, ignoring heartbeat config!\n");
285 		heartbeat = preset_heartbeat;
296 			dev_warn(dev, "time_left > heartbeat? Assuming last ping just before now.\n");
331 	watchdog_init_timeout(wdd, heartbeat, dev);
384 module_param(heartbeat, int, 0);
385 MODULE_PARM_DESC(heartbeat,
386 		 "Watchdog heartbeat period in seconds from 1 to "