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authorBoris BREZILLON <boris.brezillon@free-electrons.com>2014-09-22 18:11:50 (GMT)
committerBrian Norris <computersforpeace@gmail.com>2014-09-22 18:29:57 (GMT)
commit57a94e24bc927f642f7f48ca1bf5476aa5be269d (patch)
tree15c21381e30271c677de35583c0032ad4b8bbc05 /drivers/mtd
parente5bffb59cfbb3371ff00a165a5a48c1f3fdf125a (diff)
downloadlinux-57a94e24bc927f642f7f48ca1bf5476aa5be269d.tar.xz
mtd: nand: support ONFI timing mode retrieval for non-ONFI NANDs
Add an onfi_timing_mode_default field to nand_chip and nand_flash_dev in order to support NAND timings definition for non-ONFI NAND. NAND that support better timings mode than the default one have to define a new entry in the nand_ids table. The default timing mode should be deduced from timings description from the datasheet and the ONFI specification (www.onfi.org/~/media/ONFI/specs/onfi_3_1_spec.pdf, chapter 4.15 "Timing Parameters"). You should choose the closest mode that fit the timings requirements of your NAND chip. Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/nand/nand_base.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 801cad1..5b5c627 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -3594,6 +3594,8 @@ static bool find_full_id_nand(struct mtd_info *mtd, struct nand_chip *chip,
chip->options |= type->options;
chip->ecc_strength_ds = NAND_ECC_STRENGTH(type);
chip->ecc_step_ds = NAND_ECC_STEP(type);
+ chip->onfi_timing_mode_default =
+ type->onfi_timing_mode_default;
*busw = type->options & NAND_BUSWIDTH_16;