From: Sascha Hauer s.hauer@pengutronix.de
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
---
drivers/mtd/nand/nand_timings.c | 11 +++++++++++ include/linux/mtd/nand.h | 2 ++ 2 files changed, 13 insertions(+)
diff --git a/drivers/mtd/nand/nand_timings.c b/drivers/mtd/nand/nand_timings.c index b055d27..ba4f22f 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 a633fd0..0b9fe3f 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,