diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index a08c6947..3cfe6bf 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -679,7 +679,7 @@
 {
 	struct mmc_cmd cmd;
 	int timeout = 1000;
-	uint start;
+	ulong start;
 	int err;
 
 	mmc->op_cond_pending = 0;
@@ -2611,7 +2611,7 @@
 int mmc_init(struct mmc *mmc)
 {
 	int err = 0;
-	__maybe_unused unsigned start;
+	__maybe_unused ulong start;
 #if CONFIG_IS_ENABLED(DM_MMC)
 	struct mmc_uclass_priv *upriv = dev_get_uclass_priv(mmc->dev);
 
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
index 758850f..c2ae3e3 100644
--- a/drivers/mmc/sdhci.c
+++ b/drivers/mmc/sdhci.c
@@ -151,7 +151,7 @@
 	u32 mask, flags, mode;
 	unsigned int time = 0, start_addr = 0;
 	int mmc_dev = mmc_get_blk_desc(mmc)->devnum;
-	unsigned start = get_timer(0);
+	ulong start = get_timer(0);
 
 	/* Timeout unit - ms */
 	static unsigned int cmd_timeout = SDHCI_CMD_DEFAULT_TIMEOUT;