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/at91cap9adk/at91cap9adk.c | 10 +++++++--- board/atmel/at91cap9adk/nand.c | 3 +++ include/configs/at91cap9adk.h | 1 + 3 files changed, 11 insertions(+), 3 deletions(-)
diff --git a/board/atmel/at91cap9adk/at91cap9adk.c b/board/atmel/at91cap9adk/at91cap9adk.c index 310a3ef..67e16bb 100644 --- a/board/atmel/at91cap9adk/at91cap9adk.c +++ b/board/atmel/at91cap9adk/at91cap9adk.c @@ -25,7 +25,7 @@ #include <common.h> #include <asm/arch/at91cap9.h> #include <asm/arch/at91cap9_matrix.h> -#include <asm/arch/at91sam_smc.h> +#include <asm/arch/at91sam9_smc.h> #include <asm/arch/at91_pmc.h> #include <asm/arch/at91_rstc.h> #include <asm/arch/gpio.h> @@ -116,7 +116,12 @@ static void at91cap9_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_(1)); +#ifdef CFG_NAND_DBW_16 + AT91_SMC_DBW_16 | +#else /* CFG_NAND_DBW_8 */ + AT91_SMC_DBW_8 | +#endif + AT91_SMC_TDF_(1));
at91_sys_write(AT91_PMC_PCER, 1 << AT91CAP9_ID_PIOABCD);
@@ -252,7 +257,6 @@ int board_init(void) #ifdef CONFIG_USB_OHCI_NEW at91cap9_uhp_hw_init(); #endif - return 0; }
diff --git a/board/atmel/at91cap9adk/nand.c b/board/atmel/at91cap9adk/nand.c index 28091a4..0432ef1 100644 --- a/board/atmel/at91cap9adk/nand.c +++ b/board/atmel/at91cap9adk/nand.c @@ -63,6 +63,9 @@ static void at91cap9adk_nand_hwcontrol(struct mtd_info *mtd, int cmd) 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 = at91cap9adk_nand_hwcontrol; nand->chip_delay = 20;
diff --git a/include/configs/at91cap9adk.h b/include/configs/at91cap9adk.h index c891fa8..7887b36 100644 --- a/include/configs/at91cap9adk.h +++ b/include/configs/at91cap9adk.h @@ -110,6 +110,7 @@ #define NAND_MAX_CHIPS 1 #define CFG_MAX_NAND_DEVICE 1 #define CFG_NAND_BASE 0x40000000 +#define CFG_NAND_DBW_8 1
/* Ethernet */ #define CONFIG_MACB 1