--- a/drivers/mmc/mmc_write.c
+++ b/drivers/mmc/mmc_write.c
@@ -80,7 +80,7 @@ ulong mmc_berase(struct blk_desc *block_
 	u32 start_rem, blkcnt_rem, erase_args = 0;
 	struct mmc *mmc = find_mmc_device(dev_num);
 	lbaint_t blk = 0, blk_r = 0;
-	int timeout_ms = 1000;
+	int timeout_ms = blkcnt;
 
 	if (!mmc)
 		return -1;
