diff options
| author | Jean-Jacques Hiblot | 2017-09-21 16:30:01 +0200 |
|---|---|---|
| committer | Jaehoon Chung | 2018-01-12 18:11:04 +0900 |
| commit | 318a7a576bc49aa8b4207e694d3fbd48c663d6ac (patch) | |
| tree | b693aae78287dc6ad3eb069d6a4308266187bff1 /drivers/mmc | |
| parent | aff5d3c83fb8c294b3c4b97c5b6386306b47f1a0 (diff) | |
mmc: Add a new callback function to perform the 74 clocks cycle sequence
Add a new callback function *send_init_stream* which start a sequence of
at least 74 clock cycles.
The mmc core uses *mmc_send_init_stream* in order to invoke the callback
function. This will be used during power cycle where the specification
requires such a sequence after power up.
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/mmc-uclass.c | 13 | ||||
| -rw-r--r-- | drivers/mmc/mmc.c | 6 |
2 files changed, 19 insertions, 0 deletions
diff --git a/drivers/mmc/mmc-uclass.c b/drivers/mmc/mmc-uclass.c index 5dda20cda5e..9c6a8ba4760 100644 --- a/drivers/mmc/mmc-uclass.c +++ b/drivers/mmc/mmc-uclass.c @@ -51,6 +51,19 @@ int mmc_set_ios(struct mmc *mmc) return dm_mmc_set_ios(mmc->dev); } +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); +} + 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 24b5e16a3bf..1875b31ad1f 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -1198,6 +1198,10 @@ static inline int bus_width(uint cap) } #if !CONFIG_IS_ENABLED(DM_MMC) +static void mmc_send_init_stream(struct mmc *mmc) +{ +} + static int mmc_set_ios(struct mmc *mmc) { int ret = 0; @@ -1983,6 +1987,8 @@ int mmc_start_init(struct mmc *mmc) mmc_set_bus_width(mmc, 1); mmc_set_clock(mmc, 1); + mmc_send_init_stream(mmc); + /* Reset the Card */ err = mmc_go_idle(mmc); |