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| author | Fabio Estevam <fabio.estevam@freescale.com> | 2013-04-11 09:35:34 (GMT) |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2013-04-12 05:55:03 (GMT) |
| commit | 66bd1846ef08412c5c850b8a672d6fdc0eab539a (patch) | |
| tree | d61619c1277e42f8f5ab9fffdd636213156d7633 | |
| parent | dd2445ec1b839a5ca61ff8438a5b7aebb21b7986 (diff) | |
| download | u-boot-66bd1846ef08412c5c850b8a672d6fdc0eab539a.tar.xz | |
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>
| -rw-r--r-- | README | 9 | ||||
| -rw-r--r-- | drivers/mtd/nand/ndfc.c | 4 |
2 files changed, 8 insertions, 5 deletions
@@ -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 diff --git a/drivers/mtd/nand/ndfc.c b/drivers/mtd/nand/ndfc.c index 6ebbb5e..213d2c9 100644 --- a/drivers/mtd/nand/ndfc.c +++ b/drivers/mtd/nand/ndfc.c @@ -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 |