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 /include/mmc.h | |
| 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 'include/mmc.h')
| -rw-r--r-- | include/mmc.h | 9 |
1 files changed, 9 insertions, 0 deletions
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); |