On 23.10.15 20:46, Marek Vasut wrote: > 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 <ma...@denx.de>
Reviewed-by: Andreas Bießmann <andreas.de...@googlemail.com> > --- > drivers/mmc/gen_atmel_mci.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/mmc/gen_atmel_mci.c b/drivers/mmc/gen_atmel_mci.c > index 2815e57..8b05fcd 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; > } > > _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
