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dm: implement a MTD uclass

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Implement a Memory Technology Device (MTD) uclass. It should
include most flash drivers in the future. Though no uclass ops
are defined yet, the MTD ops could be used.

The NAND flash driver is based on MTD. The CFI flash and SPI
flash support MTD, too. It should make sense to convert them
to MTD uclass.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
This commit is contained in:
Thomas Chou 2015-11-07 14:20:31 +08:00
parent b375219e73
commit d85879938d
7 changed files with 63 additions and 0 deletions
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3
include/flash.h
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@ -41,6 +41,9 @@ typedef struct {
ulong addr_unlock2; /* unlock address 2 for AMD flash roms */
const char *name; /* human-readable name */
#endif
#ifdef CONFIG_MTD
struct mtd_info *mtd;
#endif
} flash_info_t;
extern flash_info_t flash_info[]; /* info for FLASH chips */