This driver includes many problems. One of the biggest one is a bunch of hard-coded parameters. This IP has many parameters that can be customized when a delivery RTL is generated. However, this driver was upstreamed by Intel, with Intel parameters hard-coded. Later, Altera added denali_dt.c to use this driver for embedded boards, but they did not fix the code in denali.c So, this driver has never worked. Even some DT bindings actually turned out wrong. There are more problems: [1] The driver just retrieves the OOB area as-is whereas the controller uses syndrome page layout. [2] Many NAND chip specific parameters are hard-coded in the driver. [3] ONFi devices are not working [4] It can not read Bad Block Marker This patch series intends to solve those problems. Outstanding changes are: - Fix raw/oob callbacks for syndrome page layout - Implement setup_data_interface() callback - Fix/implement more commands for ONFi devices - Allow to skip the driver internal bounce buffer - Support PIO in case DMA is not supported - Switch from ->cmdfunc over to ->cmd_ctrl 18 patches were merged at v2. Here is the rest of the series. v1: https://lkml.org/lkml/2016/11/26/144 v2: https://lkml.org/lkml/2017/3/22/804 Masahiro Yamada (37): mtd: nand: relax ecc.read_page() return value for uncorrectable ECC mtd: nand: denali: allow to override mtd->name from label DT property mtd: nand: denali: remove meaningless pipeline read-ahead operation mtd: nand: denali: fix bitflips calculation in handle_ecc() mtd: nand: denali: fix erased page checking mtd: nand: denali: support HW_ECC_FIXUP capability mtd: nand: denali_dt: enable HW_ECC_FIXUP for Altera SOCFPGA variant mtd: nand: denali: support 64bit capable DMA engine mtd: nand: denali_dt: remove dma-mask DT property mtd: nand: denali_dt: use pdev instead of ofdev for platform_device mtd: nand: denali: allow to override revision number mtd: nand: denali: support 1024 byte ECC step size mtd: nand: denali: avoid hard-coding ecc.strength and ecc.bytes mtd: nand: denali: support "nand-ecc-strength" DT property mtd: nand: denali: remove Toshiba and Hynix specific fixup code mtd: nand: denali_dt: add compatible strings for UniPhier SoC variants mtd: nand: denali: set NAND_ECC_CUSTOM_PAGE_ACCESS mtd: nand: denali: do not propagate NAND_STATUS_FAIL to waitfunc() mtd: nand: denali: use BIT() and GENMASK() for register macros mtd: nand: denali: remove unneeded find_valid_banks() mtd: nand: denali: handle timing parameters by setup_data_interface() mtd: nand: denali: rework interrupt handling mtd: nand: denali: fix NAND_CMD_STATUS handling mtd: nand: denali: fix NAND_CMD_PARAM handling mtd: nand: denali: switch over to cmd_ctrl instead of cmdfunc mtd: nand: denali: fix bank reset function mtd: nand: denali: use interrupt instead of polling for bank reset mtd: nand: denali: propagate page to helpers via function argument mtd: nand: denali: merge struct nand_buf into struct denali_nand_info mtd: nand: denali: use flag instead of register macro for direction mtd: nand: denali: fix raw and oob accessors for syndrome page layout mtd: nand: denali: support hardware-assisted erased page detection mtd: nand: allocate aligned buffers if NAND_OWN_BUFFERS is unset mtd: nand: allow drivers to request minimum alignment for passed buffer mtd: nand: denali: skip driver internal bounce buffer when possible mtd: nand: denali: use non-managed kmalloc() for DMA buffer mtd: nand: denali: enable bad block table scan .../devicetree/bindings/mtd/denali-nand.txt | 24 +- drivers/mtd/nand/denali.c | 1971 ++++++++++---------- drivers/mtd/nand/denali.h | 308 +-- drivers/mtd/nand/denali_dt.c | 90 +- drivers/mtd/nand/denali_pci.c | 10 +- drivers/mtd/nand/nand_base.c | 49 +- include/linux/mtd/nand.h | 4 +- 7 files changed, 1234 insertions(+), 1222 deletions(-) -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
