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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>
- struct pxa3xx_nand_timing {
- unsigned int tCH; /* Enable signal hold time */
- unsigned int tCS; /* Enable signal setup time */
- unsigned int tWH; /* ND_nWE high duration */
- unsigned int tWP; /* ND_nWE pulse time */
- unsigned int tRH; /* ND_nRE high duration */
- unsigned int tRP; /* ND_nRE pulse width */
- unsigned int tR; /* ND_nWE high to ND_nRE low for read */
- unsigned int tWHR; /* ND_nWE high to ND_nRE low for status read */
- unsigned int tAR; /* ND_ALE low to ND_nRE low delay */
- };
- struct pxa3xx_nand_flash {
- char *name;
- uint32_t chip_id;
- unsigned int page_per_block; /* Pages per block (PG_PER_BLK) */
- unsigned int page_size; /* Page size in bytes (PAGE_SZ) */
- unsigned int flash_width; /* Width of Flash memory (DWIDTH_M) */
- unsigned int dfc_width; /* Width of flash controller(DWIDTH_C) */
- unsigned int num_blocks; /* Number of physical blocks in Flash */
- struct pxa3xx_nand_timing *timing; /* NAND Flash timing */
- };
- /*
- * 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];
- const struct pxa3xx_nand_flash * flash;
- size_t num_flash;
- };
- extern void pxa3xx_set_nand_info(struct pxa3xx_nand_platform_data *info);
- #endif /* __ASM_ARCH_PXA3XX_NAND_H */
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