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mtd: atmel_nand: enable PMECC support for 8k bytes page NAND flash

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increase the delay to 75us to support the 8k bytes page nand flash

Signed-off-by: Josh Wu <josh.wu@atmel.com>
This commit is contained in:
Wu, Josh 2013-10-18 17:46:31 +08:00 committed by Scott Wood
parent affd520f8c
commit 16dddef605
1 changed files with 9 additions and 1 deletions
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10
drivers/mtd/nand/atmel_nand.c
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@ -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)