diff options
| -rw-r--r-- | drivers/mmc/mmc-uclass.c | 13 | ||||
| -rw-r--r-- | drivers/mmc/mmc.c | 6 | ||||
| -rw-r--r-- | include/mmc.h | 9 |
3 files changed, 28 insertions, 0 deletions
diff --git a/drivers/mmc/mmc-uclass.c b/drivers/mmc/mmc-uclass.c index 9af84da1599..2f4dc5bd887 100644 --- a/drivers/mmc/mmc-uclass.c +++ b/drivers/mmc/mmc-uclass.c @@ -83,6 +83,19 @@ int mmc_wait_dat0(struct mmc *mmc, int state, int timeout_us) return dm_mmc_wait_dat0(mmc->dev, state, timeout_us); } +void dm_mmc_send_init_stream(struct udevice *dev) +{ + struct dm_mmc_ops *ops = mmc_get_ops(dev); + + if (ops->send_init_stream) + ops->send_init_stream(dev); +} + +void mmc_send_init_stream(struct mmc *mmc) +{ + dm_mmc_send_init_stream(mmc->dev); +} + static int dm_mmc_get_wp(struct udevice *dev) { struct dm_mmc_ops *ops = mmc_get_ops(dev); diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index 13e887eef0d..cdcf2e0c8fe 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -1663,6 +1663,10 @@ static int mmc_execute_tuning(struct mmc *mmc, uint opcode) } #endif +static void mmc_send_init_stream(struct mmc *mmc) +{ +} + static int mmc_set_ios(struct mmc *mmc) { int ret = 0; @@ -2929,6 +2933,8 @@ int mmc_get_op_cond(struct mmc *mmc, bool quiet) retry: mmc_set_initial_state(mmc); + mmc_send_init_stream(mmc); + /* Reset the Card */ err = mmc_go_idle(mmc); diff --git a/include/mmc.h b/include/mmc.h index 52cacfd0eab..eead666ae44 100644 --- a/include/mmc.h +++ b/include/mmc.h @@ -494,6 +494,14 @@ struct dm_mmc_ops { int (*set_ios)(struct udevice *dev); /** + * send_init_stream() - send the initialization stream: 74 clock cycles + * This is used after power up before sending the first command + * + * @dev: Device to update + */ + void (*send_init_stream)(struct udevice *dev); + + /** * get_cd() - See whether a card is present * * @dev: Device to check @@ -572,6 +580,7 @@ struct dm_mmc_ops { /* Transition functions for compatibility */ int mmc_set_ios(struct mmc *mmc); +void mmc_send_init_stream(struct mmc *mmc); int mmc_getcd(struct mmc *mmc); int mmc_getwp(struct mmc *mmc); int mmc_execute_tuning(struct mmc *mmc, uint opcode); |