[PATCH v6 0/3] add the GPMI controller driver for IMX23/IMX28
Huang Shijie
b32955 at freescale.com
Tue Apr 19 22:45:46 EDT 2011
The general-purpose media interface(GPMI) controller is a flexible interface
to up to several NAND flashs.
The Bose Ray-Choudhury Hocquenghem(BCH) module is a hardware ECC accelerator.
With the help of BCH, the GPMI controller can choose to do the hardware ECC or
not.
This driver is a _pure_ MTD NAND controller driver now.
The driver depends on another patch set, you can find them at :
[1] http://lists.infradead.org/pipermail/linux-mtd/2011-April/035031.html
[2] http://lists.infradead.org/pipermail/linux-mtd/2011-April/035032.html
[3] http://lists.infradead.org/pipermail/linux-mtd/2011-April/035033.html
Test environment:
Using imx23 and imx28 boards with the rootfs in the nand flash.
The command line is:
# console=ttyAMA0,115200 mtdparts=gpmi-nfc-main:20m(boot),-(user) ubi.mtd=1 root=ubi0:rootfs0 rootfstype=ubifs gpmi_debug_init
v5 --> v6:
[0] split out the IMX23/IMX28 arch code to separate patches.
[1] fix bug : missing empty item in the end of platform_id array.
[2] inconsistent identation.
[3] others
v4 --> v5:
[0] rename the files.
[1] fix PM bug
[2] remove the rom_helper code, and move the necessary initialization code
to the main file.
[3] change the macros from CPU_IS_* to GPMI_IS_*
[4] remove the default partition layout init code. revert back the
partition parsing command line code.
[5] others
v3 --> v4:
[0] use the nand_ids{} as the nand database, drop my own database.
[1] remove the patch for DMA enginer, Shawn will submit his own version.
[2] use the platform_id to distinguish different Archs.
[3] fix the strange coding style.
[4] others.
v2 --> v3:
[0] merge the imx23 and imx28 into one file(including the header file).
[1] remove the unuse registers in the headers.
[2] fix DMA bugs
[3] add bus width field to nand_attr{}
[4] others
v1 --> v2:
[0] merge the common files into the gpmi-nfc-main.c
[1] change the code to get the clock.
[2] remove the timing in the nand_device_info{}
[3] fix DMA errors
[4] add the nand_device_info.[ch] to generic code
[5] use the chip->onfi_version for the ONFI nand
[6] useless init
[7] others
Huang Shijie (3):
MTD : add the common code for GPMI controller driver
MTD : add support for imx23 and imx28
MTD : add GPMI driver in the config and Makefile
drivers/mtd/nand/Kconfig | 11 +
drivers/mtd/nand/Makefile | 1 +
drivers/mtd/nand/gpmi-nfc/Makefile | 3 +
drivers/mtd/nand/gpmi-nfc/bch-regs.h | 88 ++
drivers/mtd/nand/gpmi-nfc/gpmi-nfc.c | 2501 +++++++++++++++++++++++++++++++++
drivers/mtd/nand/gpmi-nfc/gpmi-nfc.h | 488 +++++++
drivers/mtd/nand/gpmi-nfc/gpmi-regs.h | 163 +++
drivers/mtd/nand/gpmi-nfc/hal-mxs.c | 554 ++++++++
8 files changed, 3809 insertions(+), 0 deletions(-)
create mode 100644 drivers/mtd/nand/gpmi-nfc/Makefile
create mode 100644 drivers/mtd/nand/gpmi-nfc/bch-regs.h
create mode 100644 drivers/mtd/nand/gpmi-nfc/gpmi-nfc.c
create mode 100644 drivers/mtd/nand/gpmi-nfc/gpmi-nfc.h
create mode 100644 drivers/mtd/nand/gpmi-nfc/gpmi-regs.h
create mode 100644 drivers/mtd/nand/gpmi-nfc/hal-mxs.c
More information about the linux-mtd
mailing list