Mirrors/u-boot
2
0
Fork 0
mirror of https://github.com/AsahiLinux/u-boot synced 2024-11-28 07:31:15 +00:00
Code Issues Projects Releases Packages Wiki Activity

mtd: nand: Introduce CONFIG_SYS_NAND_BUSWIDTH_16BIT

Browse source 
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:
Fabio Estevam 2013-04-11 09:35:34 +00:00 committed by Albert ARIBAUD
parent dd2445ec1b
commit 66bd1846ef
2 changed files with 8 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
README
View file

@ -3755,9 +3755,12 @@ Low Level (hardware related) configuration options:
- CONFIG_SYS_SRIOn_MEM_SIZE: - CONFIG_SYS_SRIOn_MEM_SIZE:
Size of SRIO port 'n' memory region Size of SRIO port 'n' memory region
- CONFIG_SYS_NDFC_16 - CONFIG_SYS_NAND_BUSWIDTH_16BIT
Defined to tell the NDFC that the NAND chip is using a Defined to tell the NAND controller that the NAND chip is using
16 bit bus. 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 - CONFIG_SYS_NDFC_EBC0_CFG
Sets the EBC0_CFG register for the NDFC. If not defined Sets the EBC0_CFG register for the NDFC. If not defined

4
drivers/mtd/nand/ndfc.c
View file

@ -156,7 +156,7 @@ static uint8_t ndfc_read_byte(struct mtd_info *mtd)
struct nand_chip *chip = mtd->priv; 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); return (uint8_t) readw(chip->IO_ADDR_R);
#else #else
return readb(chip->IO_ADDR_R); return readb(chip->IO_ADDR_R);
@ -218,7 +218,7 @@ int board_nand_init(struct nand_chip *nand)
nand->ecc.bytes = 3; nand->ecc.bytes = 3;
nand->select_chip = ndfc_select_chip; nand->select_chip = ndfc_select_chip;
#ifdef CONFIG_SYS_NDFC_16BIT #ifdef CONFIG_SYS_NAND_BUSWIDTH_16BIT
nand->options |= NAND_BUSWIDTH_16; nand->options |= NAND_BUSWIDTH_16;
#endif #endif