diff options
| author | Jean-Jacques Hiblot <jjhiblot@ti.com> | 2025-04-10 11:00:20 +0200 |
|---|---|---|
| committer | Peng Fan <peng.fan@nxp.com> | 2025-04-23 10:41:11 +0800 |
| commit | d770e325e9d2fd3ba94481fc6ee41c25e799b325 (patch) | |
| tree | d6d869e087dbaa21930a8e6919ab193b6d6864bd /drivers/mmc | |
| parent | 392a5860bd65c467696deb6c0713b488a66d1b28 (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>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.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 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); |