[mirror_ubuntu-focal-kernel.git] / include / linux / platform_data / mtd-nand-pxa3xx.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_ARCH_PXA3XX_NAND_H
#define __ASM_ARCH_PXA3XX_NAND_H

#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>

/*
 * 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];
};

extern void pxa3xx_set_nand_info(struct pxa3xx_nand_platform_data *info);
#endif /* __ASM_ARCH_PXA3XX_NAND_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
fe69af00	2	#ifndef __ASM_ARCH_PXA3XX_NAND_H
	3	#define __ASM_ARCH_PXA3XX_NAND_H
	4
	5	#include <linux/mtd/mtd.h>
	6	#include <linux/mtd/partitions.h>
	7
f3c8cfc2 LW	8	/*
	9	* Current pxa3xx_nand controller has two chip select which
	10	* both be workable.
	11	*
	12	* Notice should be taken that:
	13	* When you want to use this feature, you should not enable the
	14	* keep configuration feature, for two chip select could be
	15	* attached with different nand chip. The different page size
	16	* and timing requirement make the keep configuration impossible.
	17	*/
	18
	19	/* The max num of chip select current support */
	20	#define NUM_CHIP_SELECT (2)
fe69af00	21	struct pxa3xx_nand_platform_data {
	22
	23	/* the data flash bus is shared between the Static Memory
	24	* Controller and the Data Flash Controller, the arbiter
	25	* controls the ownership of the bus
	26	*/
	27	int enable_arbiter;
	28
f271049e MR	29	/* allow platform code to keep OBM/bootloader defined NFC config */
	30	int keep_config;
	31
f3c8cfc2 LW	32	/* indicate how many chip selects will be used */
	33	int num_cs;
	34
776f265e EG	35	/* use an flash-based bad block table */
	36	bool flash_bbt;
	37
5b3e5078 EG	38	/* requested ECC strength and ECC step size */
	39	int ecc_strength, ecc_step_size;
	40
f3c8cfc2 LW	41	const struct mtd_partition *parts[NUM_CHIP_SELECT];
f3c8cfc2 LW	42	unsigned int nr_parts[NUM_CHIP_SELECT];
fe69af00	43	};
9ae819a8 EM	44
9ae819a8 EM	45	extern void pxa3xx_set_nand_info(struct pxa3xx_nand_platform_data *info);
fe69af00	46	#endif /* __ASM_ARCH_PXA3XX_NAND_H */