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: NBoris BREZILLON <boris.brezillon@free-electrons.com> Signed-off-by: NBrian Norris <computersforpeace@gmail.com>
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