Commit Graph

14 Commits

Author SHA1 Message Date
Cyrille Pitchen
161aaab8a0 mtd: atmel-quadspi: add driver for Atmel QSPI controller
This driver add support to the new Atmel QSPI controller embedded into
sama5d2x SoCs. It expects a NOR memory to be connected to the QSPI
controller.

Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2016-07-15 17:43:45 -07:00
Jiancheng Xue
e523f11141 mtd: spi-nor: add hisilicon spi-nor flash controller driver
Add hisilicon spi-nor flash controller driver

Signed-off-by: Binquan Peng <pengbinquan@hisilicon.com>
Signed-off-by: Jiancheng Xue <xuejiancheng@hisilicon.com>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Reviewed-by: Jagan Teki <jteki@openedev.com>
Reviewed-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2016-07-13 17:49:45 -07:00
Yao Yuan
a578c4f9eb mtd: spi-nor: fsl-quadspi: add support for layerscape
LS1043a and LS2080A in the Layerscape family also support Freescale Quad
SPI, make Quad SPI selectable for these hardwares.

Signed-off-by: Yuan Yao <yao.yuan@nxp.com>
Acked-by: Han xu <han.xu@nxp.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2016-03-07 11:46:44 -08:00
Yao Yuan
e8c034b2fb mtd: spi-nor: fsl-quadspi: add support for ls1021a
LS1021a also support Freescale Quad SPI controller.
Add fsl-quadspi support for ls1021a chip and make SPI_FSL_QUADSPI
selectable for LS1021A SOC hardwares.

Signed-off-by: Yuan Yao <yao.yuan@nxp.com>
Acked-by: Han xu <han.xu@freescale.com>
Acked-by: Han xu <han.xu@nxp.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2016-03-07 11:46:44 -08:00
Richard Weinberger
15c0be7bec mtd: Fix dependencies for !HAS_IOMEM archs
Not every arch has io memory.
So, unbreak the build by fixing the dependencies.

Signed-off-by: Richard Weinberger <richard@nod.at>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2016-01-26 11:30:31 -08:00
Bayi Cheng
3ce351b535 mtd: mtk-nor: new Mediatek serial flash controller driver
Add spi nor flash driver for mediatek controller

Signed-off-by: Bayi Cheng <bayi.cheng@mediatek.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-11-20 17:35:16 -08:00
Brian Norris
d26a22d067 mtd: fsl-quadspi: allow building for other ARCHes with COMPILE_TEST
This driver doesn't actually need ARCH_MXC to compile. Relax the
constraints.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Acked-by: Han xu <han.xu@freescale.com>
2015-10-19 09:50:45 -07:00
Fabio Estevam
842c12ddb4 mtd: spi-nor: Improve Kconfig help text for SPI_FSL_QUADSPI
The current "We only connect the NOR to this controller now." text
is not very clear, so explain it better by saying that generic SPI
is not supported by SPI_FSL_QUADSPI and only SPI NOR is.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-08-14 11:22:56 -07:00
Joachim Eastwood
f617b9587c mtd: spi-nor: add driver for NXP SPI Flash Interface (SPIFI)
Add SPI-NOR driver for the SPI Flash Interface (SPIFI)
controller that is found on newer NXP MCU devices.

The controller supports serial SPI Flash devices with 1-, 2-
and 4-bit width in either SPI mode 0 or 3. The controller
can operate in either command or memory mode. In memory mode
the Flash is exposed as normal memory and can be directly
accessed by the CPU.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Reviewed-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-08-14 11:22:55 -07:00
Rafał Miłecki
57cf26c1b2 mtd: spi-nor: add Kconfig option to disable 4K sectors
Current situation with 4K sectors is quite messy. First of all, some
MTD "users" don't work with such small size. An example may be UBIFS
which requires 15 KiB erase blocks as a minimum. In theory spi-nor
should provide multiple erase regions and MTD "users" should use the
one they need. Unforunately that is not implemented.

In the result our flashes database in spi-nor is hackish. For some
flashes we pretend they don't support 4K sectors just because some
distribution uses UBIFS on it. This ofc leads to conflicts, like
Samsung using w25q128 with 4K sectors vs. OpenWrt requiring it to
pretend it's 64 KiB blocks only.

My idea (plan?) for fixing this situation:
1) Use real hw info (this requires a way for disabling 4K for now)
2) Provide detailed info about erase regions
3) Make UBIFS work with devices that support 4K sectors

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2014-09-28 14:14:52 -07:00
Brian Norris
8ac326fce9 mtd: spi-nor: allow to be built as module
There's no reason this can't be a module. Also, give SPI-NOR its own
submenu.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Reviewed-by: Marek Vasut <marex@denx.de>
2014-04-14 11:23:02 -07:00
Brian Norris
e43b20619b mtd: spi-nor: shorten Kconfig naming
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Acked-by: Huang Shijie <b32955@freescale.com>
2014-04-14 11:23:01 -07:00
Huang Shijie
e46ecda764 mtd: spi-nor: Add Freescale QuadSPI driver
(0) What is the QuadSPI controller?

    The QuadSPI(Quad Serial Peripheral Interface) acts as an interface to
    one single or two external serial flash devices, each with up to 4
    bidirectional data lines.

(1) The QuadSPI controller is driven by the LUT(Look-up Table) registers.
    The LUT registers are a look-up-table for sequences of instructions.
    A valid sequence consists of four LUT registers.

(2) The definition of the LUT register shows below:

    ---------------------------------------------------
    | INSTR1 | PAD1 | OPRND1 | INSTR0 | PAD0 | OPRND0 |
    ---------------------------------------------------

    There are several types of INSTRx, such as:
	CMD	: the SPI NOR command.
	ADDR	: the address for the SPI NOR command.
	DUMMY	: the dummy cycles needed by the SPI NOR command.
	....

    There are several types of PADx, such as:
	PAD1	: use a singe I/O line.
	PAD2	: use two I/O lines.
	PAD4	: use quad I/O lines.
	....

(3) Test this driver with the JFFS2 and UBIFS:

    For jffs2:
    -------------
	#flash_eraseall /dev/mtd0
	#mount -t jffs2 /dev/mtdblock0 tmp
	#bonnie++ -d tmp -u 0 -s 10 -r 5

    For ubifs:
    -------------
	#flash_eraseall /dev/mtd0
	#ubiattach /dev/ubi_ctrl -m 0
	#ubimkvol /dev/ubi0 -N test -m
	#mount -t ubifs ubi0:test tmp
	#bonnie++ -d tmp -u 0 -s 10 -r 5

Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2014-04-14 11:22:59 -07:00
Huang Shijie
b199489d37 mtd: spi-nor: add the framework for SPI NOR
This patch cloned most of the m25p80.c. In theory, it adds a new spi-nor layer.

Before this patch, the layer is like:

                   MTD
         ------------------------
                  m25p80
         ------------------------
	       spi bus driver
         ------------------------
	        SPI NOR chip

After this patch, the layer is like:
                   MTD
         ------------------------
                  spi-nor
         ------------------------
                  m25p80
         ------------------------
	       spi bus driver
         ------------------------
	       SPI NOR chip

With the spi-nor controller driver(Freescale Quadspi), it looks like:
                   MTD
         ------------------------
                  spi-nor
         ------------------------
                fsl-quadspi
         ------------------------
	       SPI NOR chip

New APIs:
   spi_nor_scan: used to scan a spi-nor flash.

Signed-off-by: Huang Shijie <b32955@freescale.com>
Acked-by: Marek Vasut <marex@denx.de>
[Brian: rebased to include additional m25p_ids[] entry]
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2014-04-14 11:22:58 -07:00