mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-10 15:14:43 +00:00
mtd: nand: Introduce CONFIG_SYS_NAND_BUSWIDTH_16BIT
Introduce CONFIG_SYS_NAND_BUSWIDTH_16BIT option so that other NAND controller drivers could use it when a 16-bit NAND is deployed. drivers/mtd/nand/ndfc has CONFIG_SYS_NDFC_16BIT, so just rename it, so that other NAND drivers could reuse the same symbol. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Scott Wood <scottwood@freescale.com> Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
This commit is contained in:
parent
dd2445ec1b
commit
66bd1846ef
2 changed files with 8 additions and 5 deletions
9
README
9
README
|
@ -3755,9 +3755,12 @@ Low Level (hardware related) configuration options:
|
|||
- CONFIG_SYS_SRIOn_MEM_SIZE:
|
||||
Size of SRIO port 'n' memory region
|
||||
|
||||
- CONFIG_SYS_NDFC_16
|
||||
Defined to tell the NDFC that the NAND chip is using a
|
||||
16 bit bus.
|
||||
- CONFIG_SYS_NAND_BUSWIDTH_16BIT
|
||||
Defined to tell the NAND controller that the NAND chip is using
|
||||
a 16 bit bus.
|
||||
Not all NAND drivers use this symbol.
|
||||
Example of driver that uses it:
|
||||
- drivers/mtd/nand/ndfc.c
|
||||
|
||||
- CONFIG_SYS_NDFC_EBC0_CFG
|
||||
Sets the EBC0_CFG register for the NDFC. If not defined
|
||||
|
|
|
@ -156,7 +156,7 @@ static uint8_t ndfc_read_byte(struct mtd_info *mtd)
|
|||
|
||||
struct nand_chip *chip = mtd->priv;
|
||||
|
||||
#ifdef CONFIG_SYS_NDFC_16BIT
|
||||
#ifdef CONFIG_SYS_NAND_BUSWIDTH_16BIT
|
||||
return (uint8_t) readw(chip->IO_ADDR_R);
|
||||
#else
|
||||
return readb(chip->IO_ADDR_R);
|
||||
|
@ -218,7 +218,7 @@ int board_nand_init(struct nand_chip *nand)
|
|||
nand->ecc.bytes = 3;
|
||||
nand->select_chip = ndfc_select_chip;
|
||||
|
||||
#ifdef CONFIG_SYS_NDFC_16BIT
|
||||
#ifdef CONFIG_SYS_NAND_BUSWIDTH_16BIT
|
||||
nand->options |= NAND_BUSWIDTH_16;
|
||||
#endif
|
||||
|
||||
|
|
Loading…
Reference in a new issue