diff options
| author | Matthieu CASTET <matthieu.castet@parrot.com> | 2012-03-19 15:35:25 +0100 |
|---|---|---|
| committer | Huang Shijie <b32955@freescale.com> | 2012-11-01 09:39:27 +0800 |
| commit | da492da3b0e008e6812d0328ace4305862e59950 (patch) | |
| tree | cb21051d537518abd133f0411008753cb6c0aed4 /drivers/mtd | |
| parent | b822cf62c41f7ee2b5920e9838666539b21c23b0 (diff) | |
mtd: support ONFI multi lun NAND
With onfi a flash is organized into one or more logical units (LUNs).
A" logical unit (LUN) is the minimum unit that can independently execute
commands and report status.
Mtd does not exploit LUN, so make it see a big single flash where size is
lun_size * number_of_lun.
Without this patch MT29F8G08ADBDAH4 size is 512MiB instead of 1GiB.
Artem: split long line on 2 shorter ones.
Signed-off-by: Matthieu Castet <matthieu.castet@parrot.com>
Acked-by: Florian Fainelli <ffainelli@freebox.fr>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Huang Shijie <b32955@freescale.com>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/nand/nand_base.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index ccad911979fd..c2dc1f0de79c 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -2909,7 +2909,8 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip, mtd->writesize = le32_to_cpu(p->byte_per_page); mtd->erasesize = le32_to_cpu(p->pages_per_block) * mtd->writesize; mtd->oobsize = le16_to_cpu(p->spare_bytes_per_page); - chip->chipsize = (uint64_t)le32_to_cpu(p->blocks_per_lun) * mtd->erasesize; + chip->chipsize = le32_to_cpu(p->blocks_per_lun); + chip->chipsize *= (uint64_t)mtd->erasesize * p->lun_count; *busw = 0; if (le16_to_cpu(p->features) & 1) *busw = NAND_BUSWIDTH_16; |