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nand: Introduce CONFIG_SYS_NAND_SELF_INIT

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This allows a driver to run code between nand_scan_ident() and
nand_scan_tail(), among other things.  See the additions to
doc/README.nand for details.

To allow a gradual transition, Boards that don't set
CONFIG_SYS_NAND_SELF_INIT will still be initialized the old way, but
new drivers should not require this, and existing drivers should be
converted when convenient.

Signed-off-by: Scott Wood <scottwood@freescale.com>
This commit is contained in:
Scott Wood
2012-01-12 19:07:23 -06:00
parent 25efd99dbb
commit 578931b34d
3 changed files with 126 additions and 37 deletions
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5
include/nand.h
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@@ -30,7 +30,12 @@ extern void nand_init(void);
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#ifdef CONFIG_SYS_NAND_SELF_INIT
void board_nand_init(void);
int nand_register(int devnum);
#else
extern int board_nand_init(struct nand_chip *nand);
#endif
typedef struct mtd_info nand_info_t;