As raised by Rickard, certain chips like Toshiba/Kioxia TH58NVG2S3HBAI4 are not ONFI compliant and because of that, work at a very slow pace. This chip in particular supports running at a pace "close" to ONFI mode 4. This series provides a way to manufacturer drivers to propose a data interface to the core with a very simple interface and also improves the core by allocating the data interface dynamically and use a static default reset interface. Cheers, Miquèl Changes in v5: * Collected R-by tags. * Dropped the rename of onfi_timing_mode_default, got rid of it instead. * Converted Hynix and Toshiba drivers to ->choose_data_interface(). * Created a static default reset data interface object. * Allocated dynamically the timings. * Renamed onfi_find_closest_sdr_mode() and its parameter. * Dropped the comparison with maximum values in onfi_find_closest_sdr_mode(). * Use "best_timings" instead of "best_iface" as DDR is not supported yet. * Dropped choose_best_vendor_sdr_timings() and unifed its content with choose_best_sdr_timings(). * If the specific timing set close to ONFI mode X is not supported, fallback to ONFI mode X first, not X - 1. Changes in v4: * Took Rickard patch based on my previous proposals over Github and tweaked a few more things: - Added a "generic" helper to fallback on slower ONFI modes when the proposed interface is not supported by the controller. - Fixed more kdoc. - Simplified the vendor driver side by providing additional helpers. * Tweaked a little bit Rickard patch to fit the latest changes. Miquel Raynal (27): mtd: rawnand: Use unsigned types for nand_chip unsigned values mtd: rawnand: Only use u8 instead of uint8_t in nand_chip structure mtd: rawnand: Create a nand_chip operations structure mtd: rawnand: Rename the manufacturer structure mtd: rawnand: Declare the nand_manufacturer structure out of nand_chip mtd: rawnand: Reorganize the nand_chip structure mtd: rawnand: Compare the actual timing values mtd: rawnand: Use the data interface mode entry when relevant mtd: rawnand: Rename nand_has_setup_data_interface() mtd: rawnand: Fix nand_setup_data_interface() description mtd: rawnand: Rename nand_init_data_interface() mtd: rawnand: timings: Update onfi_fill_data_interface() kernel doc mtd: rawnand: timings: Provide onfi_fill_data_interface() with a data interface mtd: rawnand: timings: Add a helper to find the closest ONFI mode mtd: rawnand: timings: Avoid redefining tR_max and tCCS_min mtd: rawnand: timings: Use default values for tPROG_max and tBERS_max mtd: rawnand: Define a unique reset data interface mtd: rawnand: marvell: Use a helper to access the timings mtd: rawnand: legacy: Use a helper to access the timings mtd: rawnand: Hide the chip->data_interface indirection mtd: rawnand: Introduce nand_choose_best_sdr_timings() mtd: rawnand: Add the ->choose_data_interface() hook mtd: rawnand: toshiba: Implement ->choose_data_interface() for TC58TEG5DCLTA00 mtd: rawnand: toshiba: Implement ->choose_data_interface() for TC58NVG0S3E mtd: rawnand: hynix: Implement ->choose_data_interface() for H27UCG8T2ATR-BC mtd: rawnand: Get rid of the default ONFI timing mode mtd: rawnand: Allocate the best data interface structure dynamically Rickard x Andersson (1): mtd: rawnand: toshiba: Choose the data interface for TH58NVG2S3HBAI4 drivers/mtd/nand/raw/ams-delta.c | 2 +- .../mtd/nand/raw/cadence-nand-controller.c | 2 +- drivers/mtd/nand/raw/denali.c | 2 +- drivers/mtd/nand/raw/fsmc_nand.c | 2 +- drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c | 2 +- drivers/mtd/nand/raw/internals.h | 14 +- drivers/mtd/nand/raw/marvell_nand.c | 10 +- drivers/mtd/nand/raw/meson_nand.c | 8 +- drivers/mtd/nand/raw/mtk_nand.c | 2 +- drivers/mtd/nand/raw/mxc_nand.c | 2 +- drivers/mtd/nand/raw/mxic_nand.c | 2 +- drivers/mtd/nand/raw/nand_base.c | 244 +++++++++-------- drivers/mtd/nand/raw/nand_hynix.c | 18 +- drivers/mtd/nand/raw/nand_ids.c | 24 +- drivers/mtd/nand/raw/nand_legacy.c | 6 +- drivers/mtd/nand/raw/nand_macronix.c | 10 +- drivers/mtd/nand/raw/nand_micron.c | 2 +- drivers/mtd/nand/raw/nand_timings.c | 89 +++++-- drivers/mtd/nand/raw/nand_toshiba.c | 78 +++++- drivers/mtd/nand/raw/s3c2410.c | 2 +- drivers/mtd/nand/raw/stm32_fmc2_nand.c | 4 +- drivers/mtd/nand/raw/sunxi_nand.c | 2 +- drivers/mtd/nand/raw/tango_nand.c | 2 +- drivers/mtd/nand/raw/tegra_nand.c | 2 +- include/linux/mtd/rawnand.h | 250 +++++++++--------- 25 files changed, 476 insertions(+), 305 deletions(-) -- 2.20.1 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/