diff options
author | Matthieu CASTET <matthieu.castet@parrot.com> | 2012-03-19 10:35:25 -0400 |
---|---|---|
committer | David Woodhouse <David.Woodhouse@intel.com> | 2012-03-26 20:01:43 -0400 |
commit | 637957551c0ac80de8dfc7650d320c5a98c2c0c0 (patch) | |
tree | dd883015fceec71c899867bd710448dd66c61e48 /drivers/mtd | |
parent | 452380efbd72d8d41f53ea64c8a6ea1fedc4394d (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>
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 8008853756c9..0bcc71539b16 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c | |||
@@ -2893,7 +2893,8 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip, | |||
2893 | mtd->writesize = le32_to_cpu(p->byte_per_page); | 2893 | mtd->writesize = le32_to_cpu(p->byte_per_page); |
2894 | mtd->erasesize = le32_to_cpu(p->pages_per_block) * mtd->writesize; | 2894 | mtd->erasesize = le32_to_cpu(p->pages_per_block) * mtd->writesize; |
2895 | mtd->oobsize = le16_to_cpu(p->spare_bytes_per_page); | 2895 | mtd->oobsize = le16_to_cpu(p->spare_bytes_per_page); |
2896 | chip->chipsize = (uint64_t)le32_to_cpu(p->blocks_per_lun) * mtd->erasesize; | 2896 | chip->chipsize = le32_to_cpu(p->blocks_per_lun); |
2897 | chip->chipsize *= (uint64_t)mtd->erasesize * p->lun_count; | ||
2897 | *busw = 0; | 2898 | *busw = 0; |
2898 | if (le16_to_cpu(p->features) & 1) | 2899 | if (le16_to_cpu(p->features) & 1) |
2899 | *busw = NAND_BUSWIDTH_16; | 2900 | *busw = NAND_BUSWIDTH_16; |