From: Fabio Estevam Date: Thu, 11 Apr 2013 09:35:34 +0000 (+0000) Subject: mtd: nand: Introduce CONFIG_SYS_NAND_BUSWIDTH_16BIT X-Git-Url: http://git.dujemihanovic.xyz/%22http:/www.sics.se/static/git-favicon.png?a=commitdiff_plain;h=66bd1846ef08412c5c850b8a672d6fdc0eab539a;p=u-boot.git 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 Acked-by: Scott Wood Reviewed-by: Benoît Thébaudeau --- diff --git a/README b/README index 5c5cd18551..e9c3145156 100644 --- a/README +++ b/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 diff --git a/drivers/mtd/nand/ndfc.c b/drivers/mtd/nand/ndfc.c index 6ebbb5ebee..213d2c945a 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