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 struct pxa3xx_nand_timing { 8 unsigned int tCH; /* Enable signal hold time */ 9 unsigned int tCS; /* Enable signal setup time */ 10 unsigned int tWH; /* ND_nWE high duration */ 11 unsigned int tWP; /* ND_nWE pulse time */ 12 unsigned int tRH; /* ND_nRE high duration */ 13 unsigned int tRP; /* ND_nRE pulse width */ 14 unsigned int tR; /* ND_nWE high to ND_nRE low for read */ 15 unsigned int tWHR; /* ND_nWE high to ND_nRE low for status read */ 16 unsigned int tAR; /* ND_ALE low to ND_nRE low delay */ 17 }; 18 19 struct pxa3xx_nand_flash { 20 char *name; 21 uint32_t chip_id; 22 unsigned int page_per_block; /* Pages per block (PG_PER_BLK) */ 23 unsigned int page_size; /* Page size in bytes (PAGE_SZ) */ 24 unsigned int flash_width; /* Width of Flash memory (DWIDTH_M) */ 25 unsigned int dfc_width; /* Width of flash controller(DWIDTH_C) */ 26 unsigned int num_blocks; /* Number of physical blocks in Flash */ 27 28 struct pxa3xx_nand_timing *timing; /* NAND Flash timing */ 29 }; 30 31 /* 32 * Current pxa3xx_nand controller has two chip select which 33 * both be workable. 34 * 35 * Notice should be taken that: 36 * When you want to use this feature, you should not enable the 37 * keep configuration feature, for two chip select could be 38 * attached with different nand chip. The different page size 39 * and timing requirement make the keep configuration impossible. 40 */ 41 42 /* The max num of chip select current support */ 43 #define NUM_CHIP_SELECT (2) 44 struct pxa3xx_nand_platform_data { 45 46 /* the data flash bus is shared between the Static Memory 47 * Controller and the Data Flash Controller, the arbiter 48 * controls the ownership of the bus 49 */ 50 int enable_arbiter; 51 52 /* allow platform code to keep OBM/bootloader defined NFC config */ 53 int keep_config; 54 55 /* indicate how many chip selects will be used */ 56 int num_cs; 57 58 /* use an flash-based bad block table */ 59 bool flash_bbt; 60 61 /* requested ECC strength and ECC step size */ 62 int ecc_strength, ecc_step_size; 63 64 const struct mtd_partition *parts[NUM_CHIP_SELECT]; 65 unsigned int nr_parts[NUM_CHIP_SELECT]; 66 67 const struct pxa3xx_nand_flash * flash; 68 size_t num_flash; 69 }; 70 71 extern void pxa3xx_set_nand_info(struct pxa3xx_nand_platform_data *info); 72 #endif /* __ASM_ARCH_PXA3XX_NAND_H */ 73