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| author | Wu, Josh <Josh.wu@atmel.com> | 2013-10-18 17:46:31 +0800 |
|---|---|---|
| committer | Scott Wood <scottwood@freescale.com> | 2013-11-21 13:33:41 -0600 |
| commit | 16dddef6050471f47c84b6c929ae3c4bc9c0fb46 (patch) | |
| tree | 365663bb1c2546ecbae0ceeba7a2f9bac2cf97a1 | |
| parent | affd520f8ce506eab96e66ad525c4807871e2981 (diff) | |
| download | u-boot-imx-16dddef6050471f47c84b6c929ae3c4bc9c0fb46.zip u-boot-imx-16dddef6050471f47c84b6c929ae3c4bc9c0fb46.tar.gz u-boot-imx-16dddef6050471f47c84b6c929ae3c4bc9c0fb46.tar.bz2 | |
mtd: atmel_nand: enable PMECC support for 8k bytes page NAND flash
increase the delay to 75us to support the 8k bytes page nand flash
Signed-off-by: Josh Wu <josh.wu@atmel.com>
| -rw-r--r-- | drivers/mtd/nand/atmel_nand.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c index 10011c6..1d8c860 100644 --- a/drivers/mtd/nand/atmel_nand.c +++ b/drivers/mtd/nand/atmel_nand.c @@ -827,6 +827,7 @@ static int atmel_pmecc_nand_init_params(struct nand_chip *nand, switch (mtd->writesize) { case 2048: case 4096: + case 8192: host->pmecc_degree = (sector_size == 512) ? PMECC_GF_DIMENSION_13 : PMECC_GF_DIMENSION_14; host->pmecc_cw_len = (1 << host->pmecc_degree) - 1; @@ -840,6 +841,13 @@ static int atmel_pmecc_nand_init_params(struct nand_chip *nand, nand->ecc.steps = 1; nand->ecc.bytes = host->pmecc_bytes_per_sector * host->pmecc_sector_number; + + if (nand->ecc.bytes > MTD_MAX_ECCPOS_ENTRIES_LARGE) { + dev_err(host->dev, "too large eccpos entries. max support ecc.bytes is %d\n", + MTD_MAX_ECCPOS_ENTRIES_LARGE); + return -EINVAL; + } + if (nand->ecc.bytes > mtd->oobsize - 2) { printk(KERN_ERR "No room for ECC bytes\n"); return -EINVAL; @@ -1190,7 +1198,7 @@ int atmel_nand_chip_init(int devnum, ulong base_addr) #ifdef CONFIG_SYS_NAND_READY_PIN nand->dev_ready = at91_nand_ready; #endif - nand->chip_delay = 20; + nand->chip_delay = 75; ret = nand_scan_ident(mtd, CONFIG_SYS_NAND_MAX_CHIPS, NULL); if (ret) |