diff options
| author | Shengzhou Liu <Shengzhou.Liu@freescale.com> | 2011-12-12 17:40:52 +0800 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2012-01-09 18:18:44 +0000 |
| commit | d8251108e0def5a2f15124a8e6314b14bfa5eb9c (patch) | |
| tree | d7aab75afb2d7ff33ef93dc716b73a6c80634755 | |
| parent | 2b00668ff9d91d594a204ff2c3bf940d483e4b5f (diff) | |
| download | talos-op-linux-d8251108e0def5a2f15124a8e6314b14bfa5eb9c.tar.gz talos-op-linux-d8251108e0def5a2f15124a8e6314b14bfa5eb9c.zip | |
mtd: nand: fixup for fmr initialization of Freescale NAND controller
There was a bug for fmr initialization, which lead to fmr was always 0x100
in fsl_elbc_chip_init() and caused FCM command timeout before calling
fsl_elbc_chip_init_tail(), now we initialize CWTO to maximum timeout value
and not relying on the setting of bootloader.
Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| -rw-r--r-- | drivers/mtd/nand/fsl_elbc_nand.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/mtd/nand/fsl_elbc_nand.c b/drivers/mtd/nand/fsl_elbc_nand.c index d29479abe504..080e6037cbfb 100644 --- a/drivers/mtd/nand/fsl_elbc_nand.c +++ b/drivers/mtd/nand/fsl_elbc_nand.c @@ -671,9 +671,7 @@ static int fsl_elbc_chip_init_tail(struct mtd_info *mtd) if (chip->pagemask & 0xff000000) al++; - /* add to ECCM mode set in fsl_elbc_init */ - priv->fmr |= (12 << FMR_CWTO_SHIFT) | /* Timeout > 12 ms */ - (al << FMR_AL_SHIFT); + priv->fmr |= al << FMR_AL_SHIFT; dev_dbg(priv->dev, "fsl_elbc_init: nand->numchips = %d\n", chip->numchips); @@ -776,8 +774,10 @@ static int fsl_elbc_chip_init(struct fsl_elbc_mtd *priv) priv->mtd.priv = chip; priv->mtd.owner = THIS_MODULE; - /* Set the ECCM according to the settings in bootloader.*/ - priv->fmr = in_be32(&lbc->fmr) & FMR_ECCM; + /* set timeout to maximum */ + priv->fmr = 15 << FMR_CWTO_SHIFT; + if (in_be32(&lbc->bank[priv->bank].or) & OR_FCM_PGS) + priv->fmr |= FMR_ECCM; /* fill in nand_chip structure */ /* set up function call table */ |
