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 7struct 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 19struct pxa3xx_nand_cmdset { 20 uint16_t read1; 21 uint16_t read2; 22 uint16_t program; 23 uint16_t read_status; 24 uint16_t read_id; 25 uint16_t erase; 26 uint16_t reset; 27 uint16_t lock; 28 uint16_t unlock; 29 uint16_t lock_status; 30}; 31 32struct pxa3xx_nand_flash { 33 char *name; 34 uint32_t chip_id; 35 unsigned int page_per_block; /* Pages per block (PG_PER_BLK) */ 36 unsigned int page_size; /* Page size in bytes (PAGE_SZ) */ 37 unsigned int flash_width; /* Width of Flash memory (DWIDTH_M) */ 38 unsigned int dfc_width; /* Width of flash controller(DWIDTH_C) */ 39 unsigned int num_blocks; /* Number of physical blocks in Flash */ 40 41 struct pxa3xx_nand_timing *timing; /* NAND Flash timing */ 42}; 43 44/* 45 * Current pxa3xx_nand controller has two chip select which 46 * both be workable. 47 * 48 * Notice should be taken that: 49 * When you want to use this feature, you should not enable the 50 * keep configuration feature, for two chip select could be 51 * attached with different nand chip. The different page size 52 * and timing requirement make the keep configuration impossible. 53 */ 54 55/* The max num of chip select current support */ 56#define NUM_CHIP_SELECT (2) 57struct pxa3xx_nand_platform_data { 58 59 /* the data flash bus is shared between the Static Memory 60 * Controller and the Data Flash Controller, the arbiter 61 * controls the ownership of the bus 62 */ 63 int enable_arbiter; 64 65 /* allow platform code to keep OBM/bootloader defined NFC config */ 66 int keep_config; 67 68 /* indicate how many chip selects will be used */ 69 int num_cs; 70 71 const struct mtd_partition *parts[NUM_CHIP_SELECT]; 72 unsigned int nr_parts[NUM_CHIP_SELECT]; 73 74 const struct pxa3xx_nand_flash * flash; 75 size_t num_flash; 76}; 77 78extern void pxa3xx_set_nand_info(struct pxa3xx_nand_platform_data *info); 79#endif /* __ASM_ARCH_PXA3XX_NAND_H */ 80