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kernel/linux-rt-4.4.41/include/linux/platform_data/mtd-nand-pxa3xx.h 1.28 KB
5113f6f70   김현기   kernel add
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  #ifndef __ASM_ARCH_PXA3XX_NAND_H
  #define __ASM_ARCH_PXA3XX_NAND_H
  
  #include <linux/mtd/mtd.h>
  #include <linux/mtd/partitions.h>
  
  /*
   * Current pxa3xx_nand controller has two chip select which
   * both be workable.
   *
   * Notice should be taken that:
   * When you want to use this feature, you should not enable the
   * keep configuration feature, for two chip select could be
   * attached with different nand chip. The different page size
   * and timing requirement make the keep configuration impossible.
   */
  
  /* The max num of chip select current support */
  #define NUM_CHIP_SELECT		(2)
  struct pxa3xx_nand_platform_data {
  
  	/* the data flash bus is shared between the Static Memory
  	 * Controller and the Data Flash Controller,  the arbiter
  	 * controls the ownership of the bus
  	 */
  	int	enable_arbiter;
  
  	/* allow platform code to keep OBM/bootloader defined NFC config */
  	int	keep_config;
  
  	/* indicate how many chip selects will be used */
  	int	num_cs;
  
  	/* use an flash-based bad block table */
  	bool	flash_bbt;
  
  	/* requested ECC strength and ECC step size */
  	int ecc_strength, ecc_step_size;
  
  	const struct mtd_partition		*parts[NUM_CHIP_SELECT];
  	unsigned int				nr_parts[NUM_CHIP_SELECT];
  };
  
  extern void pxa3xx_set_nand_info(struct pxa3xx_nand_platform_data *info);
  #endif /* __ASM_ARCH_PXA3XX_NAND_H */