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| author | Eric Benard <ebenard@eukrea.com> | 2009-06-29 13:58:01 +0200 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2009-09-19 13:11:51 -0700 |
| commit | 71b7d0d90d536ae4e70929cc59a1a9f6ba457c6c (patch) | |
| tree | bd2b653811d1971f8cdd00daab2f1a1beb58488c /drivers/mtd | |
| parent | 64da392ab08a88ad83f4c3f60283711ee090c9ef (diff) | |
| download | linux-71b7d0d90d536ae4e70929cc59a1a9f6ba457c6c.tar.gz linux-71b7d0d90d536ae4e70929cc59a1a9f6ba457c6c.tar.bz2 linux-71b7d0d90d536ae4e70929cc59a1a9f6ba457c6c.zip | |
mtd: mxc_nand: fix 2KiB pagesize NAND on i.MX27
This patch allows i.MX27 to support 2KiB pagesize NAND flash.
We are using a 1.8V NAND flash which datasheet (unfortunately only
available under NDA) says :
Page size: x8: 2,112 bytes (2,048 + 64 bytes).
Without this patch, all sectors are marked as bad eraseblock.
Signed-off-by: Eric Benard <ebenard@eukrea.com>
Acked-by : Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/nand/mxc_nand.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c index 76beea40d2cf..65b26d5a5c0d 100644 --- a/drivers/mtd/nand/mxc_nand.c +++ b/drivers/mtd/nand/mxc_nand.c @@ -857,6 +857,17 @@ static void mxc_nand_command(struct mtd_info *mtd, unsigned command, } } +/* Define some generic bad / good block scan pattern which are used + * while scanning a device for factory marked good / bad blocks. */ +static uint8_t scan_ff_pattern[] = { 0xff, 0xff }; + +static struct nand_bbt_descr smallpage_memorybased = { + .options = NAND_BBT_SCAN2NDPAGE, + .offs = 5, + .len = 1, + .pattern = scan_ff_pattern +}; + static int __init mxcnd_probe(struct platform_device *pdev) { struct nand_chip *this; @@ -973,7 +984,10 @@ static int __init mxcnd_probe(struct platform_device *pdev) goto escan; } - host->pagesize_2k = (mtd->writesize == 2048) ? 1 : 0; + if (mtd->writesize == 2048) { + host->pagesize_2k = 1; + this->badblock_pattern = &smallpage_memorybased; + } if (this->ecc.mode == NAND_ECC_HW) { switch (mtd->oobsize) { |