include/linux/platform_data/mtd-nand-pxa3xx.h

   1 #ifndef __ASM_ARCH_PXA3XX_NAND_H
   2 #define __ASM_ARCH_PXA3XX_NAND_H
   3
   4 #include <linux/mtd/mtd.h>
   5 #include <linux/mtd/partitions.h>
   6
   7 /*
   8  * Current pxa3xx_nand controller has two chip select which
   9  * both be workable.
  10  *
  11  * Notice should be taken that:
  12  * When you want to use this feature, you should not enable the
  13  * keep configuration feature, for two chip select could be
  14  * attached with different nand chip. The different page size
  15  * and timing requirement make the keep configuration impossible.
  16  */
  17
  18 /* The max num of chip select current support */
  19 #define NUM_CHIP_SELECT         (2)
  20 struct pxa3xx_nand_platform_data {
  21
  22         /* the data flash bus is shared between the Static Memory
  23          * Controller and the Data Flash Controller,  the arbiter
  24          * controls the ownership of the bus
  25          */
  26         int     enable_arbiter;
  27
  28         /* allow platform code to keep OBM/bootloader defined NFC config */
  29         int     keep_config;
  30
  31         /* indicate how many chip selects will be used */
  32         int     num_cs;
  33
  34         /* use an flash-based bad block table */
  35         bool    flash_bbt;
  36
  37         /* requested ECC strength and ECC step size */
  38         int ecc_strength, ecc_step_size;
  39
  40         const struct mtd_partition              *parts[NUM_CHIP_SELECT];
  41         unsigned int                            nr_parts[NUM_CHIP_SELECT];
  42 };
  43
  44 extern void pxa3xx_set_nand_info(struct pxa3xx_nand_platform_data *info);
  45 #endif /* __ASM_ARCH_PXA3XX_NAND_H */