arch/arm/mach-at91/include/mach/system_rev.h

   1 /*
   2  * Copyright (C) 2011 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
   3  *
   4  * Under GPLv2 only
   5  */
   6
   7 #ifndef __ARCH_SYSTEM_REV_H__
   8 #define __ARCH_SYSTEM_REV_H__
   9
  10 /*
  11  * board revision encoding
  12  * mach specific
  13  * the 16-31 bit are reserved for at91 generic information
  14  *
  15  * bit 31:
  16  *      0 => nand 8 bit
  17  *      1 => nand 16 bit
  18  */
  19 #define BOARD_HAVE_NAND_16BIT   (1 << 31)
  20 static inline int board_have_nand_16bit(void)
  21 {
  22         return (system_rev & BOARD_HAVE_NAND_16BIT) ? 1 : 0;
  23 }
  24
  25 #endif /* __ARCH_SYSTEM_REV_H__ */