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| author | Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com> | 2019-01-15 13:00:15 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-01-28 13:27:44 +0100 |
| commit | a5356aef6a907c2e2aed0caaa2b88b6021394471 (patch) | |
| tree | 94ef0bccb22ff11cca6969d7b86191dada04acb4 /drivers/spi/Kconfig | |
| parent | gpio: of: Fix logic inversion (diff) | |
| download | linux-a5356aef6a907c2e2aed0caaa2b88b6021394471.tar.xz linux-a5356aef6a907c2e2aed0caaa2b88b6021394471.zip | |
spi: spi-mem: Add driver for NXP FlexSPI controller
- Add driver for NXP FlexSPI host controller
(0) What is the FlexSPI controller?
FlexSPI is a flexsible SPI host controller which supports two SPI
channels and up to 4 external devices. Each channel supports
Single/Dual/Quad/Octal mode data transfer (1/2/4/8 bidirectional
data lines) i.e. FlexSPI acts as an interface to external devices,
maximum 4, each with up to 8 bidirectional data lines.
It uses new SPI memory interface of the SPI framework to issue
flash memory operations to up to four connected flash
devices (2 buses with 2 CS each).
(1) Tested this driver with the mtd_debug and JFFS2 filesystem utility
on NXP LX2160ARDB and LX2160AQDS targets.
LX2160ARDB is having two NOR slave device connected on single bus A
i.e. A0 and A1 (CS0 and CS1).
LX2160AQDS is having two NOR slave device connected on separate buses
one flash on A0 and second on B1 i.e. (CS0 and CS3).
Verified this driver on following SPI NOR flashes:
Micron, mt35xu512ab, [Read - 1 bit mode]
Cypress, s25fl512s, [Read - 1/2/4 bit mode]
Signed-off-by: Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com>
Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Reviewed-by: Boris Brezillon <bbrezillon@kernel.org>
Tested-by: Ashish Kumar <Ashish.Kumar@nxp.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/Kconfig')
| -rw-r--r-- | drivers/spi/Kconfig | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index 71d3d2d5e5d1..ad734d11c378 100644 --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig @@ -279,6 +279,16 @@ config SPI_FSL_QUADSPI This controller does not support generic SPI messages. It only supports the high-level SPI memory interface. +config SPI_NXP_FLEXSPI + tristate "NXP Flex SPI controller" + depends on ARCH_LAYERSCAPE || HAS_IOMEM + help + This enables support for the Flex SPI controller in master mode. + Up to four slave devices can be connected on two buses with two + chipselects each. + This controller does not support generic SPI messages and only + supports the high-level SPI memory interface. + config SPI_GPIO tristate "GPIO-based bitbanging SPI Master" depends on GPIOLIB || COMPILE_TEST |