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2 Commits

Author SHA1 Message Date
Thomas Chou
ed018b21d6 mmc_spi: generate response for send status command 
A "send status" command is added with the commit "mmc: checking
status after commands with R1b response". But the status register
returned from send status command of SPI protocol is different from
that of MMC/SD protocol. We do a simple test and generate a response
in stead of full bit-by-bit translation.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
 2011-05-18 14:30:34 -05:00
Thomas Chou
d52ebf1022 mmc: add generic mmc spi driver 
This patch supports mmc/sd card with spi interface. It is based on
the generic mmc framework. It works with SDHC and supports multi
blocks read/write.

The crc checksum on data packet is enabled with the def,

There is a subcomamnd "mmc_spi" to setup spi bus and cs at run time.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Signed-off-by: Andy Fleming <afleming@freescale.com>
 2011-04-13 06:35:22 -05:00