forked from Minki/linux
c1f82478c5
Adding a new flash definition would need less code. Keep the platform passing flash definition method. If one flash is both defined in platform data and builtin table, driver would select the one from platform data first. By this way, platform could select the timing most suit for itself, not need to follow the common settings. Signed-off-by: Lei Wen <leiwen@marvell.com> Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com> Acked-by: Eric Miao <eric.y.miao@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
64 lines
1.9 KiB
C
64 lines
1.9 KiB
C
#ifndef __ASM_ARCH_PXA3XX_NAND_H
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#define __ASM_ARCH_PXA3XX_NAND_H
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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struct pxa3xx_nand_timing {
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unsigned int tCH; /* Enable signal hold time */
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unsigned int tCS; /* Enable signal setup time */
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unsigned int tWH; /* ND_nWE high duration */
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unsigned int tWP; /* ND_nWE pulse time */
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unsigned int tRH; /* ND_nRE high duration */
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unsigned int tRP; /* ND_nRE pulse width */
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unsigned int tR; /* ND_nWE high to ND_nRE low for read */
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unsigned int tWHR; /* ND_nWE high to ND_nRE low for status read */
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unsigned int tAR; /* ND_ALE low to ND_nRE low delay */
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};
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struct pxa3xx_nand_cmdset {
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uint16_t read1;
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uint16_t read2;
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uint16_t program;
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uint16_t read_status;
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uint16_t read_id;
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uint16_t erase;
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uint16_t reset;
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uint16_t lock;
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uint16_t unlock;
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uint16_t lock_status;
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};
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struct pxa3xx_nand_flash {
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uint32_t chip_id;
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unsigned int page_per_block; /* Pages per block (PG_PER_BLK) */
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unsigned int page_size; /* Page size in bytes (PAGE_SZ) */
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unsigned int flash_width; /* Width of Flash memory (DWIDTH_M) */
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unsigned int dfc_width; /* Width of flash controller(DWIDTH_C) */
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unsigned int num_blocks; /* Number of physical blocks in Flash */
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struct pxa3xx_nand_cmdset *cmdset; /* NAND command set */
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struct pxa3xx_nand_timing *timing; /* NAND Flash timing */
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};
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struct pxa3xx_nand_platform_data {
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/* the data flash bus is shared between the Static Memory
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* Controller and the Data Flash Controller, the arbiter
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* controls the ownership of the bus
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*/
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int enable_arbiter;
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/* allow platform code to keep OBM/bootloader defined NFC config */
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int keep_config;
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const struct mtd_partition *parts;
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unsigned int nr_parts;
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const struct pxa3xx_nand_flash * flash;
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size_t num_flash;
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};
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extern void pxa3xx_set_nand_info(struct pxa3xx_nand_platform_data *info);
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#endif /* __ASM_ARCH_PXA3XX_NAND_H */
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