1 files changed, 7 insertions, 3 deletions

diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 14f262e9246d..7474c47b9c08 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -527,10 +527,14 @@ void mmc_set_data_timeout(struct mmc_data *data, const struct mmc_card *card)
 
                 if (data->flags & MMC_DATA_WRITE)
                         /*
-                         * The limit is really 250 ms, but that is
-                         * insufficient for some crappy cards.
+                         * The MMC spec "It is strongly recommended
+                         * for hosts to implement more than 500ms
+                         * timeout value even if the card indicates
+                         * the 250ms maximum busy length."  Even the
+                         * previous value of 300ms is known to be
+                         * insufficient for some cards.
                          */
-                        limit_us = 300000;
+                        limit_us = 3000000;
                 else
                         limit_us = 100000;