Mirrors/u-boot
2
0
Fork 0
mirror of https://github.com/AsahiLinux/u-boot synced 2024-11-10 23:24:38 +00:00
Code Issues Projects Releases Packages Wiki Activity

fsl_esdhc: Set the eSHDC DMACTL[SNOOP] bit after resetting the controller

Browse source 
eSDHC host controller reset results in clearing of snoop bit also.
This patch sets the SNOOP bit after the completion of host controller reset.
Without this patch mmc reads are not consistent.

Signed-off-by: P.V.Suresh <pala@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
P.V.Suresh 2010-12-04 10:37:23 +05:30 committed by Kumar Gala
parent 9fd84915a9
commit 2c1764efc2
1 changed files with 4 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
drivers/mmc/fsl_esdhc.c
View file

@ -384,10 +384,6 @@ static int esdhc_init(struct mmc *mmc)
int ret = 0;
u8 card_absent;
/* Enable cache snooping */
if (cfg && !cfg->no_snoop)
esdhc_write32(&regs->scr, 0x00000040);
/* Reset the entire host controller */
esdhc_write32(&regs->sysctl, SYSCTL_RSTA);
@ -395,6 +391,10 @@ static int esdhc_init(struct mmc *mmc)
while ((esdhc_read32(&regs->sysctl) & SYSCTL_RSTA) && --timeout)
udelay(1000);
/* Enable cache snooping */
if (cfg && !cfg->no_snoop)
esdhc_write32(&regs->scr, 0x00000040);
esdhc_write32(&regs->sysctl, SYSCTL_HCKEN | SYSCTL_IPGEN);
/* Set the initial clock speed */