diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index ca7007f..6716bd1 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -137,6 +137,7 @@
 
 	int	(*start_signal_voltage_switch)(struct mmc_host *host, struct mmc_ios *ios);
 	int	(*execute_tuning)(struct mmc_host *host);
+	void	(*enable_preset_value)(struct mmc_host *host, bool enable);
 };
 
 struct mmc_card;