diff options
| author | Masahiro Yamada <yamada.m@jp.panasonic.com> | 2014-11-13 20:31:51 +0900 |
|---|---|---|
| committer | Scott Wood <scottwood@freescale.com> | 2014-11-26 19:53:22 -0600 |
| commit | f09eb52b3ffcc63b5bdaa5ca33f130491201f571 (patch) | |
| tree | f3fcc47270b35ed6e23426c8542c950a3fb01ddb | |
| parent | 65e4145a2093e6f80f19018f10a416bd02d0e816 (diff) | |
| download | blackbird-obmc-uboot-f09eb52b3ffcc63b5bdaa5ca33f130491201f571.tar.gz blackbird-obmc-uboot-f09eb52b3ffcc63b5bdaa5ca33f130491201f571.zip | |
mtd: denali: set some registers after nand_scan_ident()
Some but not all of implementations of the Denali NAND controller
have hardware circuits to detect the device parameters such as
page_size, erase_size, etc. Even on those SoCs with such hardware
supported, the hardware is known to detect wrong parameters for some
nasty (almost buggy) NAND devices. The device parameters detected
during nand_scan_ident() are more trustworthy.
This commit sets some hardware registers to mtd->pagesize,
mtd->oobsize, etc. in the code between nand_scan_ident() and
nand_scan_tail().
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Scott Wood <scottwood@freescale.com>
Cc: Chin Liang See <clsee@altera.com>
| -rw-r--r-- | drivers/mtd/nand/denali.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/mtd/nand/denali.c b/drivers/mtd/nand/denali.c index 24bc0ab4a5..9e0429aa19 100644 --- a/drivers/mtd/nand/denali.c +++ b/drivers/mtd/nand/denali.c @@ -1209,6 +1209,17 @@ static int denali_init(struct denali_nand_info *denali) nand_oob.eccbytes = denali->nand.ecc.bytes; denali->nand.ecc.layout = &nand_oob; + writel(denali->mtd->erasesize / denali->mtd->writesize, + denali->flash_reg + PAGES_PER_BLOCK); + writel(denali->nand.options & NAND_BUSWIDTH_16 ? 1 : 0, + denali->flash_reg + DEVICE_WIDTH); + writel(denali->mtd->writesize, + denali->flash_reg + DEVICE_MAIN_AREA_SIZE); + writel(denali->mtd->oobsize, + denali->flash_reg + DEVICE_SPARE_AREA_SIZE); + if (readl(denali->flash_reg + DEVICES_CONNECTED) == 0) + writel(1, denali->flash_reg + DEVICES_CONNECTED); + /* override the default operations */ denali->nand.ecc.read_page = denali_read_page; denali->nand.ecc.read_page_raw = denali_read_page_raw; |
