u-boot/drivers/mtd/nand/pxa3xx_nand.h
Stefan Roese 873960c89e mtd: nand: Add mvebu (PXA / AXP / A38x) NAND device driver
Cloned from the Linux driver v4.2.0-rc2. Plus some patches from
Antoine Tenart enabling controller initialization and ONFI timing
support:

http://lists.infradead.org/pipermail/linux-mtd/2015-July/060197.html

Please note that this driver needs the Linux NAND subsystem sync to v4.1
from Scott to be applied:

https://www.mail-archive.com/u-boot@lists.denx.de/msg175762.html

Otherwise it will not compile.

Tested on the Marvell Armada XP DB-MV784MP-GP eval board.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Antoine Tenart <antoine.tenart@free-electrons.com>
Cc: Ezeguil Garcia <ezequiel.garcia@free-electrons.com>
Cc: Luka Perkov <luka.perkov@sartura.hr>
Cc: Scott Wood <scottwood@freescale.com>
2015-08-25 22:53:58 -05:00

64 lines
2 KiB
C

#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 {
uint32_t chip_id;
unsigned int flash_width; /* Width of Flash memory (DWIDTH_M) */
unsigned int dfc_width; /* Width of flash controller(DWIDTH_C) */
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;
};
#endif /* __ASM_ARCH_PXA3XX_NAND_H */