diff options
| author | Stefan Nilsson XK <stefan.xk.nilsson@stericsson.com> | 2011-09-13 09:18:35 +0200 |
|---|---|---|
| committer | Robert Marklund <robert.marklund@stericsson.com> | 2011-10-05 12:57:52 +0200 |
| commit | 08ceafba86fb47d11ec9d787e13eb010c8569a2e (patch) | |
| tree | 9a0907adb2b7d69820569d24fb34fd03051df5e4 /drivers/mmc/core/sdio.c | |
| parent | 956007a13fb5f307f8451f51e55fc6828a6483b8 (diff) | |
mmc: core: Set correct bus mode before card init
Earlier all cards where initiated with bus mode set as OPENDRAIN, and then
later switched to PUSHPULL. According to the MMC/SD/SDIO specifications only
MMC cards use OPENDRAIN during init. For both SD and SDIO the bus mode shall
be PUSHPULL before attempting to init the card.
The consequence of having incorrect bus mode can lead to not being able
to detect the card. Therefore the default behavior have now been changed to
PUSHPULL in mmc_power_up, and will only be temporarily switched when trying
to attach or init a MMC card.
Change-Id: Ied79604d7b3b9fcaf13fbc5566f9cdd109b3cc29
Signed-off-by: Stefan Nilsson XK <stefan.xk.nilsson@stericsson.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/30930
Reviewed-by: Ulf HANSSON <ulf.hansson@stericsson.com>
Diffstat (limited to 'drivers/mmc/core/sdio.c')
| -rw-r--r-- | drivers/mmc/core/sdio.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c index ac492ac974e..698d813cff3 100644 --- a/drivers/mmc/core/sdio.c +++ b/drivers/mmc/core/sdio.c @@ -408,8 +408,6 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr, */ if (oldcard) oldcard->rca = card->rca; - - mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); } /* |