The Atmel boards can handle 8 or 16 bit NAND memories. This patch makes the support configurable in the board config header file (CFG_NAND_DBW_8 or CFG_NAND_DBW_16).
Signed-off-by: Stelian Pop stelian@popies.net --- board/atmel/at91sam9260ek/at91sam9260ek.c | 7 ++++++- board/atmel/at91sam9260ek/nand.c | 3 +++ include/configs/at91sam9260ek.h | 1 + 3 files changed, 10 insertions(+), 1 deletions(-)
diff --git a/board/atmel/at91sam9260ek/at91sam9260ek.c b/board/atmel/at91sam9260ek/at91sam9260ek.c index 21479ac..4635f0f 100644 --- a/board/atmel/at91sam9260ek/at91sam9260ek.c +++ b/board/atmel/at91sam9260ek/at91sam9260ek.c @@ -90,7 +90,12 @@ static void at91sam9260ek_nand_hw_init(void) at91_sys_write(AT91_SMC_MODE(3), AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | - AT91_SMC_DBW_8 | AT91_SMC_TDF_(2)); +#ifdef CFG_NAND_DBW_16 + AT91_SMC_DBW_16 | +#else /* CFG_NAND_DBW_8 */ + AT91_SMC_DBW_8 | +#endif + AT91_SMC_TDF_(2));
at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_PIOC);
diff --git a/board/atmel/at91sam9260ek/nand.c b/board/atmel/at91sam9260ek/nand.c index 7c1e6ab..9738f0f 100644 --- a/board/atmel/at91sam9260ek/nand.c +++ b/board/atmel/at91sam9260ek/nand.c @@ -68,6 +68,9 @@ static int at91sam9260ek_nand_ready(struct mtd_info *mtd) int board_nand_init(struct nand_chip *nand) { nand->eccmode = NAND_ECC_SOFT; +#ifdef CFG_NAND_DBW_16 + nand->options = NAND_BUSWIDTH_16; +#endif nand->hwcontrol = at91sam9260ek_nand_hwcontrol; nand->dev_ready = at91sam9260ek_nand_ready; nand->chip_delay = 20; diff --git a/include/configs/at91sam9260ek.h b/include/configs/at91sam9260ek.h index 41c418f..784b9e5 100644 --- a/include/configs/at91sam9260ek.h +++ b/include/configs/at91sam9260ek.h @@ -104,6 +104,7 @@ #define NAND_MAX_CHIPS 1 #define CFG_MAX_NAND_DEVICE 1 #define CFG_NAND_BASE 0x40000000 +#define CFG_NAND_DBW_8 1
/* NOR flash - no real flash on this board */ #define CFG_NO_FLASH 1