From d8251108e0def5a2f15124a8e6314b14bfa5eb9c Mon Sep 17 00:00:00 2001 From: Shengzhou Liu Date: Mon, 12 Dec 2011 17:40:52 +0800 Subject: 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 Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/nand/fsl_elbc_nand.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'drivers/mtd') 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 */ -- cgit v1.2.1