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Commit ee8f3768 authored by Adrian Hunter's avatar Adrian Hunter Committed by David Woodhouse
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mtd: OneNAND: add support for OneNAND manufactured by Numonyx 



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: default avatarAdrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: default avatarArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent 1e42d142

drivers/mtd/onenand/onenand_base.c

+2 −1
Original line number Diff line number Diff line
@@ -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);

include/linux/mtd/onenand.h

+1 −0
Original line number Diff line number Diff line
@@ -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