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| author | Ezequiel Garcia <ezequiel.garcia@free-electrons.com> | 2013-08-12 14:14:51 -0300 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2013-08-30 21:34:54 +0100 |
| commit | 41a634303f8dbf97c8087773b9d66914d2a9c0fd (patch) | |
| tree | 7a6ec9d0bc1091cc921724612780bd2aa11e695f /drivers/mtd | |
| parent | 3a1a344a79de3391f4122975eab1167b641668b9 (diff) | |
| download | linux-41a634303f8dbf97c8087773b9d66914d2a9c0fd.tar.gz linux-41a634303f8dbf97c8087773b9d66914d2a9c0fd.tar.bz2 linux-41a634303f8dbf97c8087773b9d66914d2a9c0fd.zip | |
mtd: nand: pxa3xx: Use 'length override' in ONFI paramater page read
The ONFI command 'parameter page read' needs a non-standard length.
Therefore, we enable the 'length override' field in NDCB0 and set
a non-zero 'length count' in NDCB3.
Additionally, the 'spare enable' bit must be disabled for any command
that sets a non-zero 'length count' in NDCB3.
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Tested-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/nand/pxa3xx_nand.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c index b3fc146cdccf..beef5bcf84ec 100644 --- a/drivers/mtd/nand/pxa3xx_nand.c +++ b/drivers/mtd/nand/pxa3xx_nand.c @@ -80,6 +80,7 @@ #define NDSR_RDDREQ (0x1 << 1) #define NDSR_WRCMDREQ (0x1) +#define NDCB0_LEN_OVRD (0x1 << 28) #define NDCB0_ST_ROW_EN (0x1 << 26) #define NDCB0_AUTO_RS (0x1 << 25) #define NDCB0_CSEL (0x1 << 24) @@ -562,6 +563,9 @@ static int prepare_command_pool(struct pxa3xx_nand_info *info, int command, case NAND_CMD_READOOB: pxa3xx_set_datasize(info); break; + case NAND_CMD_PARAM: + info->use_spare = 0; + break; case NAND_CMD_SEQIN: exec_cmd = 0; break; @@ -637,8 +641,10 @@ static int prepare_command_pool(struct pxa3xx_nand_info *info, int command, info->buf_count = 256; info->ndcb0 |= NDCB0_CMD_TYPE(0) | NDCB0_ADDR_CYC(1) + | NDCB0_LEN_OVRD | cmd; info->ndcb1 = (column & 0xFF); + info->ndcb3 = 256; info->data_size = 256; break; |