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| author | Jean-Jacques Hiblot <jjhiblot@ti.com> | 2017-09-21 16:30:01 +0200 |
|---|---|---|
| committer | Jaehoon Chung <jh80.chung@samsung.com> | 2018-01-12 18:11:04 +0900 |
| commit | 318a7a576bc49aa8b4207e694d3fbd48c663d6ac (patch) | |
| tree | b693aae78287dc6ad3eb069d6a4308266187bff1 /drivers/mmc/mmc.c | |
| parent | aff5d3c83fb8c294b3c4b97c5b6386306b47f1a0 (diff) | |
| download | u-boot-318a7a576bc49aa8b4207e694d3fbd48c663d6ac.tar.gz | |
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/mmc.c')
| -rw-r--r-- | drivers/mmc/mmc.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index 24b5e16a3b..1875b31ad1 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); |