diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index d84c880fac84..e22d2b5576ec 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -687,7 +687,13 @@ void mmc_set_timing(struct mmc_host *host, unsigned int timing)
  */
 static void mmc_power_up(struct mmc_host *host)
 {
-	int bit = fls(host->ocr_avail) - 1;
+	int bit;
+
+	/* If ocr is set, we use it */
+	if (host->ocr)
+		bit = ffs(host->ocr) - 1;
+	else
+		bit = fls(host->ocr_avail) - 1;
 
 	host->ios.vdd = bit;
 	if (mmc_host_is_spi(host)) {