MAX_HEARTBEAT      27 drivers/watchdog/davinci_wdt.c #define MAX_HEARTBEAT     600	/* really the max margin is 264/27MHz*/
MAX_HEARTBEAT      35 drivers/watchdog/jz4740_wdt.c #define MAX_HEARTBEAT     2048
MAX_HEARTBEAT      31 drivers/watchdog/max63xx_wdt.c #define MAX_HEARTBEAT     60
MAX_HEARTBEAT      37 drivers/watchdog/pnx4008_wdt.c #define MAX_HEARTBEAT     60