diff options
| author | Adrian Hunter <adrian.hunter@intel.com> | 2011-08-29 16:42:11 +0300 |
|---|---|---|
| committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2017-03-31 10:16:31 +0200 |
| commit | e5ad0688a6b46f62664bdaad854311017bd039c4 (patch) | |
| tree | 9e982ef690984ebd1d8709ef8b273794d7a4e0ec /drivers/mmc/core/mmc.c | |
| parent | b496d097ab8741678ae3027b8e5358a04fb5ea82 (diff) | |
mmc: core: add eMMC hardware reset support
eMMC's may have a hardware reset line. This patch provides a
host controller operation to implement hardware reset and
a function to reset and reinitialize the card. Also, for MMC,
the reset is always performed before initialization.
The host must set the new host capability MMC_CAP_HW_RESET
to enable hardware reset.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
(cherry picked from commit b2499518b5ad7e28bb3ed348fd3f370eeb1e36c0)
Diffstat (limited to 'drivers/mmc/core/mmc.c')
| -rwxr-xr-x | drivers/mmc/core/mmc.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index e450fbc66559..d77872f8f9ba 100755 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -426,6 +426,7 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; if (card->ext_csd.rev >= 5) { card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; + card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; /* check whether the eMMC card supports HPI */ if ((ext_csd[EXT_CSD_HPI_FEATURES] & 0x1) && !(card->quirks & MMC_QUIRK_BROKEN_HPI)) { |