[U-Boot] [PATCH] mmc: add generic mmc spi driver

[Thomas Chou <thomas@wytron.com.tw>]

On 04/23/2010 12:04 PM, Thomas Chou wrote:
> it's too bad the new framework doesnt allow for dynamic probing like 
> the spi
>> layer.  makes it a pain to work with a SPI/MMC card that can have the CS
>> changed on the fly.
>> -mike
>>
>>      
>
Second thought.
With generic mmc framework, we can instance multiple mmc devices. Then 
we can probe one of them when we want.

#ifdef CONFIG_GENERIC_MMC
int board_mmc_init(bd_t *bis)
{
     int rc = 0;
#ifdef CONFIG_MMC_SPI
     extern int mmc_spi_init(uint bus, uint cs, uint speed, uint mode);
     mmc_spi_init(CONFIG_MMC_SPI_BUS,
               CONFIG_MMC_SPI_CS_0,
               CONFIG_MMC_SPI_SPEED,
               CONFIG_MMC_SPI_MODE);
     mmc_spi_init(CONFIG_MMC_SPI_BUS,
               CONFIG_MMC_SPI_CS_1,
               CONFIG_MMC_SPI_SPEED,
               CONFIG_MMC_SPI_MODE);
#endif
     return rc;
}
#endif

Cheers,
Thomas