diff options
| author | Shengzhou Liu <Shengzhou.Liu@freescale.com> | 2011-12-12 17:40:53 +0800 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2012-01-09 18:18:47 +0000 |
| commit | f57eb5cc5394afb2a6f41da7509b794ed9ca5f6d (patch) | |
| tree | 280ea115439a795a174cab0885071c4ed33751fb | |
| parent | d8251108e0def5a2f15124a8e6314b14bfa5eb9c (diff) | |
mtd: nand: Add ONFI support for FSL NAND controller
- fix NAND_CMD_READID command for ONFI detect.
- add NAND_CMD_PARAM command to read the ONFI parameter page.
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 | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/drivers/mtd/nand/fsl_elbc_nand.c b/drivers/mtd/nand/fsl_elbc_nand.c index 080e6037cbfb..7195ee6efe12 100644 --- a/drivers/mtd/nand/fsl_elbc_nand.c +++ b/drivers/mtd/nand/fsl_elbc_nand.c @@ -356,20 +356,22 @@ static void fsl_elbc_cmdfunc(struct mtd_info *mtd, unsigned int command, fsl_elbc_run_command(mtd); return; - /* READID must read all 5 possible bytes while CEB is active */ case NAND_CMD_READID: - dev_vdbg(priv->dev, "fsl_elbc_cmdfunc: NAND_CMD_READID.\n"); + case NAND_CMD_PARAM: + dev_vdbg(priv->dev, "fsl_elbc_cmdfunc: NAND_CMD %x\n", command); out_be32(&lbc->fir, (FIR_OP_CM0 << FIR_OP0_SHIFT) | (FIR_OP_UA << FIR_OP1_SHIFT) | (FIR_OP_RBW << FIR_OP2_SHIFT)); - out_be32(&lbc->fcr, NAND_CMD_READID << FCR_CMD0_SHIFT); - /* nand_get_flash_type() reads 8 bytes of entire ID string */ - out_be32(&lbc->fbcr, 8); - elbc_fcm_ctrl->read_bytes = 8; + out_be32(&lbc->fcr, command << FCR_CMD0_SHIFT); + /* + * although currently it's 8 bytes for READID, we always read + * the maximum 256 bytes(for PARAM) + */ + out_be32(&lbc->fbcr, 256); + elbc_fcm_ctrl->read_bytes = 256; elbc_fcm_ctrl->use_mdr = 1; - elbc_fcm_ctrl->mdr = 0; - + elbc_fcm_ctrl->mdr = column; set_addr(mtd, 0, 0, 0); fsl_elbc_run_command(mtd); return; |