[U-Boot] [PATCH 1/3] mmc: fsl_esdhc: enable dat[4:7] for eMMC4.5

[York Sun <yorksun@freescale.com>]

Yangbo,

On 09/13/2015 08:04 PM, Yangbo Lu wrote:
> If adapter card type identification is supported for platform, we would
> enable dat[4:7] for eMMC4.5 card.
> 
> Signed-off-by: Yangbo Lu <yangbo.lu@freescale.com>
> Cc: York Sun <yorksun@freescale.com>
> ---
>  board/freescale/common/qixis.h | 2 ++
>  drivers/mmc/fsl_esdhc.c        | 3 +++
>  2 files changed, 5 insertions(+)
> 
> diff --git a/board/freescale/common/qixis.h b/board/freescale/common/qixis.h
> index 51ce9c3..450cd0d 100644
> --- a/board/freescale/common/qixis.h
> +++ b/board/freescale/common/qixis.h
> @@ -127,6 +127,8 @@ void qixis_write_i2c(unsigned int reg, u8 value);
>  #define QIXIS_ESDHC_NO_ADAPTER                  0x7	/* No Card is Present*/
>  #define QIXIS_SDCLKIN		0x08
>  #define QIXIS_SDCLKOUT		0x02
> +#define QIXIS_DAT5_6_7		0X02
> +#define QIXIS_DAT4		0X01
>  #endif
>  
>  #endif
> diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c
> index 0b37002..639ec02 100644
> --- a/drivers/mmc/fsl_esdhc.c
> +++ b/drivers/mmc/fsl_esdhc.c
> @@ -747,6 +747,9 @@ void mmc_adapter_card_type_ident(void)
>  
>  	switch (card_id) {
>  	case QIXIS_ESDHC_ADAPTER_TYPE_EMMC45:
> +		value = QIXIS_READ(brdcfg[5]);
> +		value |= (QIXIS_DAT4 | QIXIS_DAT5_6_7);
> +		QIXIS_WRITE(brdcfg[5], value);
>  		break;
>  	case QIXIS_ESDHC_ADAPTER_TYPE_SDMMC_LEGACY:
>  		break;
> 

Does any other board have this identification feature? I see the code only use
qixis. How are RDB and customer boards handled?

York