Messages in this thread | | | From | Apurva Nandan <> | Subject | [PATCH v3 00/17] mtd: spinand: Add Octal DTR SPI (8D-8D-8D) mode support | Date | Sat, 1 Jan 2022 13:12:33 +0530 |
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Hi, This series proposes patches for adding the following functionality in SPI NAND core:
- Octal DTR SPI (8D-8D-8D) mode support
- ctrl_ops support
- Winbond W35N01JW SPI NAND chip support
This series has been tested on TI J721e EVM with the Winbond W35N01JW flash with following test utilities:
- nandtest Test log: https://pastebin.com/raw/PusiLYVQ
- mtd_stresstest Test log: https://pastebin.com/raw/gBtV2CAf
- UBIFS LTP stress test (NAND_XL_STRESS_DD_RW_UBIFS). Test log: https://pastebin.com/raw/J8WyLsz1
Datasheet: https://www.winbond.com/export/sites/winbond/datasheet/W35N01JW_Datasheet_Brief.pdf
--- Changes in v3:
- Added support for ctrl_ops, data_ops and ctrl_ops_variants.
- Made the implementation generic in terms of spinand protocol and SPI mode changes.
- Added option to disable Octal DTR mode.
- Removed spinand_patch_op(), adjust_op() manufacturer_op.
- Removed Power-on-Reset functionality and its call from mtd_suspend(), now just disable Octal DTR at suspend.
Changes in v2:
- Removed *_ALL_ARGS() macros from spi-mem.h, and redefined DTR macros.
- Renamed spinand_setup_op() to spinand_patch_op(). Reduced one conditional check from this function. Had to keep tweaking in hot-path to avoid complicated implementation "hacks".
- Changes in commit messages and added comments.
- Dropped "Reject 8D-8D-8D op_templates if octal_dtr_enale() is missing in manufacturer_op" patch.
- Reduced PoR reset delay.
- Splitted "mtd: spinand: Add support for Winbond W35N01JW SPI NAND flash" into 3 independent patches.
Apurva Nandan (17): spi: spi-mem: Add DTR templates for cmd, address, dummy and data phase mtd: spinand: Define macros for Octal DTR ops mtd: spinand: Add enum spinand_protocol to indicate current SPI IO mode mtd: spinand: Rename 'op_templates' to 'data_ops' mtd: spinand: Define ctrl_ops for non-page read/write op templates mtd: spinand: Define default ctrl_ops in the core mtd: spinand: Switch from op macros usage to 'ctrl_ops' in the core mtd: spinand: Add support for manufacturer-based ctrl_ops variations mtd: spinand: Add change_mode() in manufacturer_ops mtd: spinand: Add pointer to probed flash's spinand_info mtd: spinand: Allow enabling/disabling Octal DTR mode in the core mtd: spinand: Add mtd_suspend() to disable Octal DTR mode at suspend mtd: spinand: winbond: Add support for write volatile configuration register op mtd: spinand: winbond: Add octal_dtr_enable/disable() in manufacturer_ops mtd: spianand: winbond: Add change_mode() manufacturer_ops mtd: spinand: winbond: Rename cache op_variants struct variable mtd: spinand: winbond: Add support for Winbond W35N01JW SPI NAND flash
drivers/mtd/nand/spi/core.c | 213 +++++++++++++++++++++++++---- drivers/mtd/nand/spi/winbond.c | 242 +++++++++++++++++++++++++++++++-- include/linux/mtd/spinand.h | 154 +++++++++++++++++++-- include/linux/spi/spi-mem.h | 41 ++++++ 4 files changed, 599 insertions(+), 51 deletions(-)
-- 2.25.1
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