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由 Thomas Chou 提交于
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: NThomas Chou <thomas@wytron.com.tw> Signed-off-by: NAndy Fleming <afleming@freescale.com>
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