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

[Dirk Behme]

On 27.03.2012 12:25, Chang-Ming.Huang at freescale.com wrote:
> From: Jerry Huang <Chang-Ming.Huang at 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.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_reset(regs);
>  
> +	esdhc_write32(&regs->sysctl, SYSCTL_PEREN);

If I read the iMX6 manual correctly, the SYSCTL_PEREN isn't implemented 
there. So this should be a NOP for iMX6?

Best regards

Dirk