diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index 44a4feb..8436bc7 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -1277,6 +1277,11 @@
 }
 #endif
 
+/* board-specific MMC power initializations. */
+__weak void board_mmc_power_init(void)
+{
+}
+
 int mmc_start_init(struct mmc *mmc)
 {
 	int err;
@@ -1293,6 +1298,8 @@
 	if (mmc->has_init)
 		return 0;
 
+	board_mmc_power_init();
+
 	/* made sure it's not NULL earlier */
 	err = mmc->cfg->ops->init(mmc);