diff options
| author | Jörg Krause <joerg.krause@embedded.rocks> | 2018-01-14 19:26:40 +0100 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2018-06-27 12:20:55 +0200 |
| commit | 4368f85359b947da7f151265d8969d6af1235357 (patch) | |
| tree | db56d562936d612462fbae39b9a50cf538ebeef9 /drivers | |
| parent | f3f2af3bdf2af89d0621aa0fbd94a918e4447081 (diff) | |
mtd: nand: mxs_nand_spl: add mxs_flash_full_ident
For now, the existing SPL MXS NAND driver only supports to identify
ONFi-compliant NAND chips. In order to allow identifying
non-ONFi-compliant chips add `mxs_flash_full_ident()` which uses the
`nand_get_flash_type()` functionality from `nand_base.c` to lookup
for supported NAND chips in the chip ID list.
For compatibility reason the full identification support is only
available if the config option `CONFIG_SPL_NAND_IDENT` is enabled.
The lookup was tested on a custom i.MX6ULL board with a Toshiba
TC58NVG1S3HTAI0 NAND chip.
Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mtd/nand/mxs_nand_spl.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/mtd/nand/mxs_nand_spl.c b/drivers/mtd/nand/mxs_nand_spl.c index adb12c531e..2d7bbe83cc 100644 --- a/drivers/mtd/nand/mxs_nand_spl.c +++ b/drivers/mtd/nand/mxs_nand_spl.c @@ -49,6 +49,28 @@ static void mxs_nand_command(struct mtd_info *mtd, unsigned int command, } } +#if defined (CONFIG_SPL_NAND_IDENT) + +/* Trying to detect the NAND flash using ONFi, JEDEC, and (extended) IDs */ +static int mxs_flash_full_ident(struct mtd_info *mtd) +{ + int nand_maf_id, nand_dev_id; + struct nand_chip *chip = mtd_to_nand(mtd); + struct nand_flash_dev *type; + + type = nand_get_flash_type(mtd, chip, &nand_maf_id, &nand_dev_id, NULL); + + if (IS_ERR(type)) { + chip->select_chip(mtd, -1); + return PTR_ERR(type); + } + + return 0; +} + +#else + +/* Trying to detect the NAND flash using ONFi only */ static int mxs_flash_onfi_ident(struct mtd_info *mtd) { register struct nand_chip *chip = mtd_to_nand(mtd); @@ -109,10 +131,16 @@ static int mxs_flash_onfi_ident(struct mtd_info *mtd) return 0; } +#endif /* CONFIG_SPL_NAND_IDENT */ + static int mxs_flash_ident(struct mtd_info *mtd) { int ret; +#if defined (CONFIG_SPL_NAND_IDENT) + ret = mxs_flash_full_ident(mtd); +#else ret = mxs_flash_onfi_ident(mtd); +#endif return ret; } |