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authorP.V.Suresh <pala@freescale.com>2010-12-04 10:37:23 +0530
committerKumar Gala <galak@kernel.crashing.org>2010-12-13 09:32:16 -0600
commit2c1764efc2872fc944d0d580e911168c0a231f8c (patch)
tree42bd74bd86e29cb699f42182821b64350d6e1be4
parent9fd84915a92058b775fcc8fad4ab4e59fe51cf17 (diff)
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fsl_esdhc: Set the eSHDC DMACTL[SNOOP] bit after resetting the controller
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>
-rw-r--r--drivers/mmc/fsl_esdhc.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c
index a368fe6..57cd4ee 100644
--- a/drivers/mmc/fsl_esdhc.c
+++ b/drivers/mmc/fsl_esdhc.c
@@ -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 */