On 27/03/2012 13:01, Dirk Behme wrote: > On 27.03.2012 12:25, chang-ming.hu...@freescale.com wrote: >> From: Jerry Huang <chang-ming.hu...@freescale.com> >> >> According to the card detection of p1/p2 paltform RM, > > typo => platform > >> 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.hu...@freescale.com> >> CC: Andy Fleming <aflem...@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_reset(regs); >> >> + esdhc_write32(®s->sysctl, SYSCTL_PEREN); > > If I read the iMX6 manual correctly, the SYSCTL_PEREN isn't implemented > there.
In the copy I could put my hands, SYSCTL_PEREN is implemented for i.MX6. However, I do not know if this has an influence. ESDHC should be clocked with SDCLKEN, that is enabled by default on i.MX (both MX5 and MX6). > So this should be a NOP for iMX6? However, if it is not implemented and it is marked as reserved, we should not set it. Best regards, Stefano Babic -- ===================================================================== DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sba...@denx.de ===================================================================== _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot