1 /* SPDX-License-Identifier: GPL-2.0 */ <<
2 #ifndef __ASM_ARCH_PXA3XX_NAND_H 1 #ifndef __ASM_ARCH_PXA3XX_NAND_H
3 #define __ASM_ARCH_PXA3XX_NAND_H 2 #define __ASM_ARCH_PXA3XX_NAND_H
4 3
5 #include <linux/mtd/mtd.h> 4 #include <linux/mtd/mtd.h>
6 #include <linux/mtd/partitions.h> 5 #include <linux/mtd/partitions.h>
7 6
8 /* 7 /*
9 * Current pxa3xx_nand controller has two chip !! 8 * Current pxa3xx_nand controller has two chip select which
10 * historically all platforms remaining on pla !! 9 * both be workable.
11 * to device tree if you need more. !! 10 *
>> 11 * Notice should be taken that:
>> 12 * When you want to use this feature, you should not enable the
>> 13 * keep configuration feature, for two chip select could be
>> 14 * attached with different nand chip. The different page size
>> 15 * and timing requirement make the keep configuration impossible.
12 */ 16 */
>> 17
>> 18 /* The max num of chip select current support */
>> 19 #define NUM_CHIP_SELECT (2)
13 struct pxa3xx_nand_platform_data { 20 struct pxa3xx_nand_platform_data {
14 /* Keep OBM/bootloader NFC timing conf !! 21
15 bool keep_config; !! 22 /* the data flash bus is shared between the Static Memory
16 /* Use a flash-based bad block table * !! 23 * Controller and the Data Flash Controller, the arbiter
17 bool flash_bbt; !! 24 * controls the ownership of the bus
18 /* Requested ECC strength and ECC step !! 25 */
>> 26 int enable_arbiter;
>> 27
>> 28 /* allow platform code to keep OBM/bootloader defined NFC config */
>> 29 int keep_config;
>> 30
>> 31 /* indicate how many chip selects will be used */
>> 32 int num_cs;
>> 33
>> 34 /* use an flash-based bad block table */
>> 35 bool flash_bbt;
>> 36
>> 37 /* requested ECC strength and ECC step size */
19 int ecc_strength, ecc_step_size; 38 int ecc_strength, ecc_step_size;
20 /* Partitions */ !! 39
21 const struct mtd_partition *parts; !! 40 const struct mtd_partition *parts[NUM_CHIP_SELECT];
22 unsigned int nr_parts; !! 41 unsigned int nr_parts[NUM_CHIP_SELECT];
23 }; 42 };
24 43
25 extern void pxa3xx_set_nand_info(struct pxa3xx 44 extern void pxa3xx_set_nand_info(struct pxa3xx_nand_platform_data *info);
26 <<
27 #endif /* __ASM_ARCH_PXA3XX_NAND_H */ 45 #endif /* __ASM_ARCH_PXA3XX_NAND_H */
28 46
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