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| author | Marek Vasut <marex@denx.de> | 2015-10-23 20:46:29 +0200 |
|---|---|---|
| committer | Andreas Bießmann <andreas.devel@googlemail.com> | 2015-11-01 22:02:15 +0100 |
| commit | ecfb0ff81295933584da136da792c317063f7bcc (patch) | |
| tree | b50df5227e1929049b817d9ea577470a529180f7 /drivers | |
| parent | b84c9c9a988f9631f547222d2d43298c57149e3a (diff) | |
| download | u-boot-imx-ecfb0ff81295933584da136da792c317063f7bcc.zip u-boot-imx-ecfb0ff81295933584da136da792c317063f7bcc.tar.gz u-boot-imx-ecfb0ff81295933584da136da792c317063f7bcc.tar.bz2 | |
mmc: atmel: Fix clock configuration
After silencing the prints which were generated when reconfiguring the
clock of the SD/MMC bus, surprisingly, the driver stopped working such
that every attempt to use the SD/MMC bus caused the CPU to get totally
stuck hard. It turns out that the prints generated a short delay, which
was necessary for the CPU to reconfigure the clock without getting stuck.
Thus, this patch adds a short delay after the clock configuration instead.
Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Andreas Bießmann <andreas.devel@googlemail.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/gen_atmel_mci.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/mmc/gen_atmel_mci.c b/drivers/mmc/gen_atmel_mci.c index a67fb50..eb12bd0 100644 --- a/drivers/mmc/gen_atmel_mci.c +++ b/drivers/mmc/gen_atmel_mci.c @@ -113,6 +113,8 @@ static void mci_set_mode(struct mmc *mmc, u32 hz, u32 blklen) if (mmc->card_caps & mmc->cfg->host_caps & MMC_MODE_HS) writel(MMCI_BIT(HSMODE), &mci->cfg); + udelay(50); + initialized = 1; } |