[PATCH v10 0/5] mtd: nand: vf610_nfc: Freescale NFC for VF610

Stefan Agner
2015-08-03T09:27:40Z

The 10th revision includes some more review comments, including an
improved handling of empty NAND pages with hardware ECC.

More information and the full test log of earlier patchset version
can be found in the cover letter of the last revision v6:
http://thread.gmane.org/gmane.linux.kernel/1979868

Changes since v9:
- Remove inline of vf610_nfc_done
- Add __iomem to src argument of vf610_nfc_memcpy
- Handle return value of mtd_device_parse_register correctly
- Count bits in OOB too (only non-ECC bits)
- Return bitflips in ecc.read_page callback vf610_nfc_read_page
- Fall-through ALT_BUF_ONFI
- Use BIT macros

Changes since v8:
- Fix 16-Bit NAND flash support by splitting up initialization
(introduce vf610_nfc_preinit_controller)
- Updated comments in initialziation functions

Changes since v7:
- vf610-twr.dts: Moved NFC pinmux into the existing iomuxc node
and sort new nfc node behind the existing iomuxc node as well.
- vf610-twr.dts/vf-colibri.dtsi: Dropped _1 suffixes

Changes since v6:
- Rebased ontop of l2-mtd/master (v4.2-rc1 based)
- Removed HAVE_NAND_VF610_NFC and use depends on. This made
"[PATCH v6 4/6] ARM: vf610: enable NAND Flash Controller" unnecessary

Changes since v5:
- Removed fsl,mpc5125-nfc compatible string
- Removed readl/writel_relaxed
- Change interface of vf610_nfc_transfer_size to match other accessors

Changes since v4:
- Rebased ontop of l2-mtd/master (v4.1-rc4 based)
- Eliminate unnecessary page read (NAND_CMD_SEQIN) since the driver does
not support sub-page writes anyway (improves write performance)
- Support ONFI by enabling READID command with offset and parameter page
reads (CMD_PARAM)
- Change to dedicated read_page/write_page function, enables raw writes
- Use __LITTLE_ENDIAN to distingush between LE/BE relevant statements
- Eliminated vf610_nfc_probe_dt in favor of common DT init code
- Use wait_for_completion_timeout
- Some style fixes (spaces, etc.)

Changes since v3:
- Make the driver selectable when COMPILE_TEST is set
- Fix compile error due to superfluous ECC_STATUS configuration in initial
patch (without ECC correction ECC_STATUS does not need to be configured)
- Remove custom BBT pattern and switch to in-band BBT in the initial patch
- Include two bug fixes, for details see the corresponding U-Boot patches:
http://thread.gmane.org/gmane.comp.boot-loaders.u-boot/215802

Changes since v2:
- Updated binding documentation

Changes since v1:
- Nest nfc_config struct within the main nfc struct
- Use assigned clock binding to specify NFC clock
- Rebased ontop of MSCM IR patchset (driver parts have been merged)
- Split out arch Kconfig in a separate config
- Fix module license
- Updated MAINTAINERS

Changes since RFC (Bill Pringlemeir):
- Renamed driver from fsl_nfc to vf610_nfc
- Use readl/writel for all register in accessor functions
- Optimized field accessor functions
- Implemented PM (suspend/resume) functions
- Implemented basic support for ECC strength/ECC step size from dt
- Improved performance of count_written_bits by using hweight32
- Support ECC with 60-bytes to correct up to 32 bit errors
- Changed to in-band BBT (NAND_BBT_NO_OOB) which also allows ECC modes
which uses up to 60 bytes on 64 byte OOB
- Removed custom (downstream) BBT pattern since BBT table won't be
compatible anyway (due to the change above)

*** SUBJECT HERE ***

*** BLURB HERE ***

Stefan Agner (5):
mtd: nand: vf610_nfc: Freescale NFC for VF610, MPC5125 and others
mtd: nand: vf610_nfc: add hardware BCH-ECC support
mtd: nand: vf610_nfc: add device tree bindings
ARM: dts: vf610twr: add NAND flash controller peripherial
ARM: dts: vf-colibri: enable NAND flash controller

.../devicetree/bindings/mtd/vf610-nfc.txt | 45 ++
MAINTAINERS | 6 +
arch/arm/boot/dts/vf-colibri.dtsi | 32 +
arch/arm/boot/dts/vf610-twr.dts | 40 +
arch/arm/boot/dts/vfxxx.dtsi | 8 +
drivers/mtd/nand/Kconfig | 11 +
drivers/mtd/nand/Makefile | 1 +
drivers/mtd/nand/vf610_nfc.c | 849 +++++++++++++++++++++
8 files changed, 992 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mtd/vf610-nfc.txt
create mode 100644 drivers/mtd/nand/vf610_nfc.c

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2.5.0