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ANDROID: mmc: sdio: Add high speed support to sdio_reset_comm()

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Signed-off-by: San Mehat <san@google.com>
This commit is contained in:
Daniel Chen
2009-12-09 09:45:36 -08:00
committed by Dmitry Shmidt
parent 7aa92ea46b
commit 48ed6faf71
1 changed files with 22 additions and 1 deletions
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23
drivers/mmc/core/sdio.c
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@@ -1261,7 +1261,28 @@ int sdio_reset_comm(struct mmc_card *card)
goto err;
}
mmc_set_clock(host, card->cis.max_dtr);
/*
* Switch to high-speed (if supported).
*/
err = sdio_enable_hs(card);
if (err)
goto err;
/*
* Change to the card's maximum speed.
*/
if (mmc_card_highspeed(card)) {
/*
* The SDIO specification doesn't mention how
* the CIS transfer speed register relates to
* high-speed, but it seems that 50 MHz is
* mandatory.
*/
mmc_set_clock(host, 50000000);
} else {
mmc_set_clock(host, card->cis.max_dtr);
}
err = sdio_enable_wide(card);
if (err)
goto err;