diff options
| author | Sascha Hauer <s.hauer@pengutronix.de> | 2017-11-22 02:38:18 +0900 |
|---|---|---|
| committer | Masahiro Yamada <yamada.masahiro@socionext.com> | 2017-11-29 00:28:58 +0900 |
| commit | b893e83330662393ff40d4dc8cb2733599beb26a (patch) | |
| tree | 923b8df7c131dfc81159d3a0b11c0520e9e94e81 | |
| parent | 46deff57da190fee1a902ecfbf951cd4cfe8494e (diff) | |
mtd: nand: Expose data interface for ONFI mode 0
The nand layer will need ONFI mode 0 to use it as timing mode
before and right after reset.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
[Linux commit: 6e1f9708dbf3c50a8da93c1952a01a7a2acb5e66]
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
| -rw-r--r-- | drivers/mtd/nand/nand_timings.c | 11 | ||||
| -rw-r--r-- | include/linux/mtd/nand.h | 2 |
2 files changed, 13 insertions, 0 deletions
diff --git a/drivers/mtd/nand/nand_timings.c b/drivers/mtd/nand/nand_timings.c index b055d27654..ba4f22f12d 100644 --- a/drivers/mtd/nand/nand_timings.c +++ b/drivers/mtd/nand/nand_timings.c @@ -297,3 +297,14 @@ int onfi_init_data_interface(struct nand_chip *chip, return 0; } EXPORT_SYMBOL(onfi_init_data_interface); + +/** + * nand_get_default_data_interface - [NAND Interface] Retrieve NAND + * data interface for mode 0. This is used as default timing after + * reset. + */ +const struct nand_data_interface *nand_get_default_data_interface(void) +{ + return &onfi_sdr_timings[0]; +} +EXPORT_SYMBOL(nand_get_default_data_interface); diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index a633fd0fd1..0b9fe3f0e8 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -1183,6 +1183,8 @@ uint8_t nand_read_byte(struct mtd_info *mtd); /* get timing characteristics from ONFI timing mode. */ const struct nand_sdr_timings *onfi_async_timing_mode_to_sdr_timings(int mode); +/* get data interface from ONFI timing mode 0, used after reset. */ +const struct nand_data_interface *nand_get_default_data_interface(void); int nand_check_erased_ecc_chunk(void *data, int datalen, void *ecc, int ecclen, |