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mtd: OneNAND: add support for OneNAND manufactured by Numonyx

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In addition to adding the Numonyx manufacturer code, this patch
also ensures 'sync. write' is disabled when reading identification
data - something that the Numonyx chip objects to, but the
Samsung chip seems to ignore.

Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Adrian Hunter 2009-05-05 11:04:19 +03:00 committed by David Woodhouse
parent 1e42d142e6
commit ee8f376889
2 changed files with 3 additions and 1 deletions
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3
drivers/mtd/onenand/onenand_base.c
View file

@ -2576,6 +2576,7 @@ static void onenand_print_device_info(int device, int version)
static const struct onenand_manufacturers onenand_manuf_ids[] = {
{ONENAND_MFR_SAMSUNG, "Samsung"},
{ONENAND_MFR_NUMONYX, "Numonyx"},
};
/**
@ -2621,7 +2622,7 @@ static int onenand_probe(struct mtd_info *mtd)
/* Save system configuration 1 */
syscfg = this->read_word(this->base + ONENAND_REG_SYS_CFG1);
/* Clear Sync. Burst Read mode to read BootRAM */
this->write_word((syscfg & ~ONENAND_SYS_CFG1_SYNC_READ), this->base + ONENAND_REG_SYS_CFG1);
this->write_word((syscfg & ~ONENAND_SYS_CFG1_SYNC_READ & ~ONENAND_SYS_CFG1_SYNC_WRITE), this->base + ONENAND_REG_SYS_CFG1);
/* Send the command for reading device ID from BootRAM */
this->write_word(ONENAND_CMD_READID, this->base + ONENAND_BOOTRAM);

1
include/linux/mtd/onenand.h
View file

@ -176,6 +176,7 @@ struct onenand_chip {
* OneNAND Flash Manufacturer ID Codes
*/
#define ONENAND_MFR_SAMSUNG 0xec
#define ONENAND_MFR_NUMONYX 0x20
/**
* struct onenand_manufacturers - NAND Flash Manufacturer ID Structure