diff options
Diffstat (limited to 'drivers/mtd/nand/raw/fsl_ifc_nand.c')
| -rw-r--r-- | drivers/mtd/nand/raw/fsl_ifc_nand.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/drivers/mtd/nand/raw/fsl_ifc_nand.c b/drivers/mtd/nand/raw/fsl_ifc_nand.c index cf20238782..e5ff937872 100644 --- a/drivers/mtd/nand/raw/fsl_ifc_nand.c +++ b/drivers/mtd/nand/raw/fsl_ifc_nand.c @@ -411,9 +411,16 @@ static void fsl_ifc_cmdfunc(struct mtd_info *mtd, unsigned int command, /* READID must read all possible bytes while CEB is active */ case NAND_CMD_READID: case NAND_CMD_PARAM: { + /* + * For READID, read 8 bytes that are currently used. + * For PARAM, read all 3 copies of 256-bytes pages. + */ + int len = 8; int timing = IFC_FIR_OP_RB; - if (command == NAND_CMD_PARAM) + if (command == NAND_CMD_PARAM) { timing = IFC_FIR_OP_RBCD; + len = 256 * 3; + } ifc_out32(&ifc->ifc_nand.nand_fir0, (IFC_FIR_OP_CW0 << IFC_NAND_FIR0_OP0_SHIFT) | @@ -423,12 +430,8 @@ static void fsl_ifc_cmdfunc(struct mtd_info *mtd, unsigned int command, command << IFC_NAND_FCR0_CMD0_SHIFT); ifc_out32(&ifc->ifc_nand.row3, column); - /* - * although currently it's 8 bytes for READID, we always read - * the maximum 256 bytes(for PARAM) - */ - ifc_out32(&ifc->ifc_nand.nand_fbcr, 256); - ctrl->read_bytes = 256; + ifc_out32(&ifc->ifc_nand.nand_fbcr, len); + ctrl->read_bytes = len; set_addr(mtd, 0, 0, 0); fsl_ifc_run_command(mtd); |