WDT_CMD_REG
time_left = bcm7038_wdt_read(wdt->base + WDT_CMD_REG);
bcm7038_wdt_write(WDT_START_1, wdt->base + WDT_CMD_REG);
bcm7038_wdt_write(WDT_START_2, wdt->base + WDT_CMD_REG);
bcm7038_wdt_write(WDT_STOP_1, wdt->base + WDT_CMD_REG);
bcm7038_wdt_write(WDT_STOP_2, wdt->base + WDT_CMD_REG);