[U-Boot] [PATCH 1/2] FSL/eSDHC: enable the peripheral clock to detect the card

Chang-Ming.Huang at freescale.com Chang-Ming.Huang at freescale.com
Tue Mar 27 12:25:00 CEST 2012

From: Jerry Huang <Chang-Ming.Huang at freescale.com>

According to the card detection of p1/p2 paltform RM,
we should set SYSCTL[PEREN] to enable the clock.
Otherwise, after booting the u-boot, and then inserting the SD card,
the SD card can't be detected.

Signed-off-by: Jerry Huang <Chang-Ming.Huang at freescale.com>
CC: Andy Fleming <afleming at gmail.com>
 drivers/mmc/fsl_esdhc.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c
index a2f35e3..1682a79 100644
--- a/drivers/mmc/fsl_esdhc.c
+++ b/drivers/mmc/fsl_esdhc.c
@@ -491,6 +491,8 @@ int fsl_esdhc_initialize(bd_t *bis, struct fsl_esdhc_cfg *cfg)
 	/* First reset the eSDHC controller */
+	esdhc_write32(&regs->sysctl, SYSCTL_PEREN);
 	mmc->priv = cfg;
 	mmc->send_cmd = esdhc_send_cmd;
 	mmc->set_ios = esdhc_set_ios;

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