diff options
| author | Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | 2011-04-14 00:34:03 +0800 |
|---|---|---|
| committer | Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | 2011-05-25 23:04:32 +0800 |
| commit | 76b2ab76a4492f8f43c511857181f8421901ce3f (patch) | |
| tree | 3594dadd853458ae4651a93db4d78248232b5518 /arch/arm/mach-at91/include | |
| parent | 4a7df24ddc7097cd789a7527187826552ea0765e (diff) | |
at91: remove MTD_NAND_ATMEL_BUSWIDTH_16 option
no board configure it as 'n' and it's an issue to merge all defconfigs
in one
On AT91SAM926x boards both types of NAND flash can be present
(8 and 16 bit data bus width).
so will pass it via system_rev
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Patrice Vilchez <patrice.vilchez@atmel.com>
Diffstat (limited to 'arch/arm/mach-at91/include')
| -rw-r--r-- | arch/arm/mach-at91/include/mach/system_rev.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/include/mach/system_rev.h b/arch/arm/mach-at91/include/mach/system_rev.h new file mode 100644 index 00000000000..b855ee75f72 --- /dev/null +++ b/arch/arm/mach-at91/include/mach/system_rev.h @@ -0,0 +1,25 @@ +/* + * Copyright (C) 2011 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> + * + * Under GPLv2 only + */ + +#ifndef __ARCH_SYSTEM_REV_H__ +#define __ARCH_SYSTEM_REV_H__ + +/* + * board revision encoding + * mach specific + * the 16-31 bit are reserved for at91 generic information + * + * bit 31: + * 0 => nand 16 bit + * 1 => nand 8 bit + */ +#define BOARD_HAVE_NAND_8BIT (1 << 31) +static int inline board_have_nand_8bit(void) +{ + return system_rev & BOARD_HAVE_NAND_8BIT; +} + +#endif /* __ARCH_SYSTEM_REV_H__ */ |