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*---. Merge remote-tracking branches 'spi/topic/sh-msiof', 'spi/topic/slave', ↵Mark Brown2017-11-101-4/+7
|\ \ \ | | | | | | | | | | | | 'spi/topic/spreadtrum' and 'spi/topic/tegra114' into spi-next
| | | * spi: spreadtrum adi: add hwspinlock dependencyArnd Bergmann2017-10-051-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With CONFIG_HWSPINLOCK=m, the new driver fails to link as a built-in driver: drivers/spi/spi-sprd-adi.o: In function `sprd_adi_remove': spi-sprd-adi.c:(.text+0x18): undefined reference to `hwspin_lock_free' drivers/spi/spi-sprd-adi.o: In function `sprd_adi_probe': spi-sprd-adi.c:(.text+0xfc): undefined reference to `of_hwspin_lock_get_id' spi-sprd-adi.c:(.text+0x108): undefined reference to `hwspin_lock_request_specific' spi-sprd-adi.c:(.text+0x268): undefined reference to `hwspin_lock_free' This adds a hard Kconfig dependency on HWSPINLOCK for the !COMPILE_TEST case, and allows compile-testing with HWSPINLOCK completely disabled, which will then rely on the existing stub API. Fixes: 7e2903cb91df ("spi: Add ADI driver for Spreadtrum platform") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Mark Brown <broonie@kernel.org>
| | | * spi: Add ADI driver for Spreadtrum platformBaolin Wang2017-09-191-0/+6
| | |/ | |/| | | | | | | | | | | | | | | | | | | This patch adds ADI driver based on SPI framework for Spreadtrum SC9860 platform. Signed-off-by: Baolin Wang <baolin.wang@spreadtrum.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | * spi: Kconfig: Remove old comments now that SPI slave is supportedFabio Estevam2017-09-201-4/+0Star
| |/ | | | | | | | | | | | | | | | | | | Since commit 6c364062bfed ("spi: core: Add support for registering SPI slave controllers") SPI slave is also supported, so remove the old comments that say SPI slave is unsupported. Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@kernel.org>
* / spi: spi-fsl-dspi: enabling Coldfire mcf5441x dspiAngelo Dureghello2017-11-031-1/+1
|/ | | | | Signed-off-by: Angelo Dureghello <angelo@sysam.it> Signed-off-by: Mark Brown <broonie@kernel.org>
*-. Merge remote-tracking branches 'spi/topic/pxa', 'spi/topic/pxa2xx', ↵Mark Brown2017-09-041-2/+2
|\ \ | | | | | | | | | 'spi/topic/qup', 'spi/topic/rockchip' and 'spi/topic/sh' into spi-next
| * | spi: fix building SPI_PXA on MMPArnd Bergmann2017-08-071-2/+2
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the audio driver selects CONFIG_PXA_SSP on ARCH_MMP as a loadable module, and the PXA SPI driver is built-in, we get a link error in the SPI driver: drivers/spi/spi-pxa2xx.o: In function `pxa2xx_spi_remove': spi-pxa2xx.c:(.text+0x5f0): undefined reference to `pxa_ssp_free' drivers/spi/spi-pxa2xx.o: In function `pxa2xx_spi_probe': spi-pxa2xx.c:(.text+0xeac): undefined reference to `pxa_ssp_request' spi-pxa2xx.c:(.text+0x1468): undefined reference to `pxa_ssp_free' spi-pxa2xx.c:(.text+0x15bc): undefined reference to `pxa_ssp_free' The problem is that the PXA SPI driver only uses 'select SSP' specifically when building it for PXA, but we can also build it for PCI, which is meant for Intel x86 SoCs that use the same SPI block. When the sound driver forces the SSP to be a loadable module, the IS_ENABLED() check in include/linux/pxa2xx_ssp.h triggers but the spi driver can't reference the exported symbols. I had a different approach before, making the PCI case depend on X86, which fixed the problem by avoiding the MMP case. This goes a different route, making the driver select PXA_SSP also on MMP, which has an SSP that none of the boards in mainline Linux use for SPI. There is no harm in always enabling the build on MMP (PCI or not PCI), so I do that too, to document that this hardware is actually available on MMP. Link: https://patchwork.kernel.org/patch/8879921/ Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Mark Brown <broonie@kernel.org>
* / spi: altera: Switch to SPI core transfer queue managementLars-Peter Clausen2017-08-161-1/+0Star
|/ | | | | | | | | | | | | | | | The Altera SPI driver currently uses the spi-bitbang infrastructure for transfer queue management, but non of the bitbang functionality itself. This is because when the driver was written this was the only way to not have to do queue management in the driver itself. Nowadays transfer queue management is available from the SPI driver core itself and using the bitbang infrastructure just adds an additional level of indirection. Switch the driver over to using the core queue management directly. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@kernel.org>
*-. Merge remote-tracking branches 'spi/topic/spidev', 'spi/topic/st-ssc4' and ↵Mark Brown2017-07-031-0/+10
|\ \ | | | | | | | | | 'spi/topic/stm32' into spi-next
| | * spi: add driver for STM32 SPI controllerAmelie Delaunay2017-06-211-0/+10
| |/ | | | | | | | | | | | | | | | | | | | | | | The STM32 Serial Peripheral Interface (SPI) can be used to communicate with external devices while using the specific synchronous protocol. It supports a half-duplex, full-duplex and simplex synchronous, serial communication with external devices with 4-bit to 16/32-bit per word. It has two 8x/16x 8-bit embedded Rx and TxFIFOs with DMA capability. It can operate in master or slave mode. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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*-. \ Merge remote-tracking branches 'spi/topic/loopback', ↵Mark Brown2017-07-031-0/+7
|\ \ \ | | |/ | |/| | | | 'spi/topic/meson-spicc', 'spi/topic/mtk' and 'spi/topic/omap2-mcspi' into spi-next
| | * spi: Add Meson SPICC driverNeil Armstrong2017-05-241-0/+7
| |/ | | | | | | | | | | | | | | | | | | | | The SPICC hardware block on the Amlogic SoCs is Communication oriented and can do Full-Duplex 8- to 32-bit width SPI transfers up to 30MHz. The current driver only supportd the PIO transfer mode since the DMA seems broken on available hardware. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* | Merge remote-tracking branch 'spi/topic/master' into spi-nextMark Brown2017-07-031-1/+25
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| * | spi: slave: Add SPI slave handler controlling system stateGeert Uytterhoeven2017-05-261-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | Add an example SPI slave handler to allow remote control of system reboot, power off, halt, and suspend. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| * | spi: slave: Add SPI slave handler reporting uptime at previous messageGeert Uytterhoeven2017-05-261-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add an example SPI slave handler responding with the uptime at the time of reception of the last SPI message. This can be used by an external microcontroller as a dead man's switch. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| * | spi: core: Add support for registering SPI slave controllersGeert Uytterhoeven2017-05-261-1/+13
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support for registering SPI slave controllers using the existing SPI master framework: - SPI slave controllers must use spi_alloc_slave() instead of spi_alloc_master(), and should provide an additional callback "slave_abort" to abort an ongoing SPI transfer request, - SPI slave controllers are added to a new "spi_slave" device class, - SPI slave handlers can be bound to the SPI slave device represented by an SPI slave controller using a DT child node named "slave", - Alternatively, (un)binding an SPI slave handler to the SPI slave device represented by an SPI slave controller can be done by (un)registering the slave device through a sysfs virtual file named "slave". From the point of view of an SPI slave protocol handler, an SPI slave controller looks almost like an ordinary SPI master controller. The only exception is that a transfer request will block on the remote SPI master, and may be cancelled using spi_slave_abort(). Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@kernel.org>
* / spi: SPI_TI_QSPI should depend on HAS_DMAGeert Uytterhoeven2017-05-141-0/+1
|/ | | | | | | | | | | If NO_DMA=y: ERROR: "bad_dma_ops" [drivers/spi/spi-ti-qspi.ko] undefined! Add a dependency on HAS_DMA to fix this. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Mark Brown <broonie@kernel.org>
*-. Merge remote-tracking branches 'spi/topic/ti-qspi' and 'spi/topic/xlp' into ↵Mark Brown2017-04-261-1/+1
|\ \ | | | | | | | | | spi-next
| | * spi: xlp: update for ARCH_VULCAN2Jayachandran C2017-03-131-1/+1
| |/ | | | | | | | | | | | | | | | | | | | | | | | | ARCH_VULCAN arm64 platform (for Broadcom Vulcan ARM64 processors) has been discontinued. Cavium's ThunderX2 CN99XX (ARCH_THUNDER2) will be the next revision of the platform. Update compile dependencies and ACPI ID to reflect this change. There is not need to retain ARCH_VULCAN since the Vulcan processor was never in production and ARCH_VULCAN will be deleted soon. Signed-off-by: Jayachandran C <jnair@caviumnetworks.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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*-. \ Merge remote-tracking branches 'spi/topic/imx', 'spi/topic/lantiq-ssc', ↵Mark Brown2017-02-191-0/+8
|\ \ \ | | |/ | |/| | | | 'spi/topic/mpc52xx', 'spi/topic/ppc4xx' and 'spi/topic/pxa2xx' into spi-next
| | * spi: lantiq-ssc: activate under COMPILE_TESTHauke Mehrtens2017-02-191-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | This driver should compile on all platforms, activate it under compile test. The Lantiq specific parts are under ifdef and should be removed when Lantiq platform supports common clock framework. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: Mark Brown <broonie@kernel.org>
| | * spi: lantiq-ssc: add support for Lantiq SSC SPI controllerHauke Mehrtens2017-02-141-0/+8
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This driver supports the Lantiq SSC SPI controller in master mode. This controller is found on Intel (former Lantiq) SoCs like the Danube, Falcon, xRX200, xRX300. The hardware uses two hardware FIFOs one for received and one for transferred bytes. When the driver writes data into the transmit FIFO the complete word is taken from the FIFO into a shift register. The data from this shift register is then written to the wire. This driver uses the interrupts signaling the status of the FIFOs and not the shift register. It is also possible to use the interrupts for the shift register, but they will send a signal after every word. When using the interrupts for the shift register we get a signal when the last word is written into the shift register and not when it is written to the wire. After all FIFOs are empty the driver busy waits till the hardware is not busy any more and returns the transfer status. Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: Mark Brown <broonie@kernel.org>
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*-. \ Merge remote-tracking branches 'spi/topic/dw', 'spi/topic/ep93xx', ↵Mark Brown2017-02-191-1/+1
|\ \ \ | | |/ | |/| | | | 'spi/topic/falcon' and 'spi/topic/fsl-lpspi' into spi-next
| | * spi: make falcon-spi boolHauke Mehrtens2017-01-101-1/+1
| |/ | | | | | | | | | | | | | | | | Falcon spi accesses some ebu functions which are not exported and can not be accessed when build as module. Make this module bool instead. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Acked-by: Thomas Langer <thomas.langer@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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*-. \ Merge remote-tracking branches 'spi/topic/armada', 'spi/topic/ath79', ↵Mark Brown2017-02-191-1/+2
|\ \ \ | | |/ | |/| | | | 'spi/topic/bcm-qspi' and 'spi/topic/bcm53xx' into spi-next
| | * spi: bcm-qspi: Enable the driver on BMIPS_GENERICJaedon Shin2016-12-311-1/+2
| |/ | | | | | | | | | | | | | | | | The Broadcom BCM7XXX ARM and MIPS based SoCs share a similar hardware block for SPI. Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* / spi: SPI_FSL_DSPI should depend on HAS_DMAGeert Uytterhoeven2016-12-141-0/+1
|/ | | | | | | | | | | If NO_DMA=y: ERROR: "bad_dma_ops" [drivers/spi/spi-fsl-dspi.ko] undefined! Add a dependency on HAS_DMA to fix this. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Mark Brown <broonie@kernel.org>
*---. Merge remote-tracking branches 'spi/topic/orion', 'spi/topic/pxa2xx', ↵Mark Brown2016-12-121-2/+3
|\ \ \ | | | | | | | | | | | | 'spi/topic/rspi' and 'spi/topic/s3c64xx' into spi-next
| | | * spi: s3c64xx: Allow driver to build if COMPILE_TEST is enabledJavier Martinez Canillas2016-11-091-1/+1
| | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The driver only has runtime but no build time dependency with PLAT_SAMSUNG || ARCH_EXYNOS so it can be built for testing purposes if the COMPILE_TEST option is enabled. This is useful to have more build coverage and make sure that the driver is not affected by changes that could cause build regressions. Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| * / spi: orion: fix comment to mention MVEBUUwe Kleine-König2016-11-301-1/+2
| |/ | | | | | | | | | | | | | | | | | | MVEBU chips (Armada XP, Armada 370 and others) are supported by this driver. Mention this in the help text to make more obvious what is already specified in the dependencies of this symbol. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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*-. | Merge remote-tracking branches 'spi/topic/fsl-lpspi', 'spi/topic/imx', ↵Mark Brown2016-12-121-0/+6
|\ \| | | | | | | | | | 'spi/topic/jcore' and 'spi/topic/omap' into spi-next
| * | spi: imx: add lpspi bus driverGao Pan2016-11-221-0/+6
| |/ | | | | | | | | | | | | | | | | | | | | | | | | This patch adds lpspi driver to support new i.MX products which use lpspi instead of ecspi. The lpspi can continue operating in stop mode when an appropriate clock is available. It is also designed for low CPU overhead with DMA offloading of FIFO register accesses. Signed-off-by: Gao Pan <pandy.gao@nxp.com> Reviewed-by: Fugang Duan <B38611@freescale.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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*-. \ Merge remote-tracking branches 'spi/topic/delay', 'spi/topic/dw', ↵Mark Brown2016-12-121-1/+0Star
|\ \ \ | | |/ | |/| | | | 'spi/topic/fsl-dspi' and 'spi/topic/fsl-espi' into spi-next
| | * spi: fsl-espi: separate fsl-espi from fsl-lib completelyHeiner Kallweit2016-11-141-1/+0Star
| |/ | | | | | | | | | | | | | | After having removed all code dependencies we can make fsl-espi completely independent of fsl-lib now. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
* / spi: Add support for Armada 3700 SPI ControllerRomain Perier2016-12-081-0/+7
|/ | | | | | | | | | | | | | | | | Marvell Armada 3700 SoC comprises an SPI Controller. This Controller supports up to 4 SPI slave devices, with dedicated chip selects,supports SPI mode 0/1/2 and 3, CPIO or Fifo mode with DMA transfers and different SPI transfer mode (Single, Dual or Quad). This commit adds basic driver support for FIFO mode. In this mode, dedicated registers are used to store the instruction, the address, the read mode and the data. Write and Read FIFO are used to store the outcoming or incoming data. The data FIFOs are accessible via DMA or by the CPU. Only the CPU is supported for now. Signed-off-by: Romain Perier <romain.perier@free-electrons.com> Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Mark Brown <broonie@kernel.org>
*-. Merge remote-tracking branches 'spi/topic/rspi', 'spi/topic/sc18is602', ↵Mark Brown2016-09-301-1/+1
|\ \ | | | | | | | | | 'spi/topic/sh-msiof', 'spi/topic/spidev-test' and 'spi/topic/st-ssc4' into spi-next
| | * spi: sh-msiof: Use ARCH_SHMOBILE instead of SUPERHGeert Uytterhoeven2016-09-011-1/+1
| |/ | | | | | | | | | | | | | | | | | | "spi_sh_msiof" is used on sh7723 and sh7724 only. As all of the above select ARCH_SHMOBILE, restrict its driver dependencies from SUPERH to ARCH_SHMOBILE. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Mark Brown <broonie@kernel.org>
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*-. | Merge remote-tracking branches 'spi/topic/octeon', 'spi/topic/pic32-sqi', ↵Mark Brown2016-09-301-0/+7
|\ \| | | | | | | | | | 'spi/topic/pxa2xx' and 'spi/topic/qup' into spi-next
| * | spi: octeon: Add ThunderX driverJan Glauber2016-08-191-0/+7
| |/ | | | | | | | | | | | | | | | | | | Add ThunderX SPI driver using the shared part from the Octeon driver. The main difference of the ThunderX driver is that it is a PCI device so probing is different. The system clock settings can be specified in device tree. Signed-off-by: Jan Glauber <jglauber@cavium.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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*-. \ Merge remote-tracking branches 'spi/topic/fsl-espi', 'spi/topic/imx', ↵Mark Brown2016-09-301-0/+7
|\ \ \ | | |/ | |/| | | | 'spi/topic/jcore', 'spi/topic/loopback' and 'spi/topic/meson' into spi-next
| | * spi: add driver for J-Core SPI controllerRich Felker2016-08-081-0/+7
| |/ | | | | | | | | | | | | | | | | | | | | | | | | The J-Core "spi2" device is a PIO-based SPI master controller. It differs from "bitbang" devices in that that it's clocked in hardware rather than via soft clock modulation over gpio, and performs byte-at-a-time transfers between the cpu and SPI controller. This driver will be extended to support future versions of the J-Core SPI controller with DMA transfers when they become available. Signed-off-by: Rich Felker <dalias@libc.org> Signed-off-by: Mark Brown <broonie@kernel.org>
* / spi: bcm-qspi: Add Broadcom MSPI driverKamal Dasu2016-09-141-0/+10
|/ | | | | | | | | | | Master SPI driver for Broadcom settop, iProc SoCs. The driver is used for devices that use SPI protocol on BRCMSTB, NSP, NS2 SoCs. SoC platform driver call exported porbe(), remove() and suspend/resume pm_ops implemented in this common driver. Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com> Signed-off-by: Yendapally Reddy Dhananjaya Reddy Signed-off-by: Mark Brown <broonie@kernel.org>
* spi: omap2-mcspi: Select SPI_SPLITFranklin S Cooper Jr2016-07-081-0/+1
| | | | | | | | | The function sg_split will be used by spi-omap2-mcspi to handle a SoC workaround in the SPI driver. Therefore, select SG_SPLIT so this function is available to the driver. Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com> Signed-off-by: Mark Brown <broonie@kernel.org>
*---. Merge remote-tracking branches 'spi/topic/pxa2xx', 'spi/topic/qup', ↵Mark Brown2016-05-231-2/+2
|\ \ \ | | | | | | | | | | | | 'spi/topic/rockchip', 'spi/topic/st-ssc4' and 'spi/topic/xlp' into spi-next
| | | * spi: xlp: Enable SPI driver for Broadcom Vulcan ARM64Kamlakant Patel2016-03-231-1/+1
| | |/ | |/| | | | | | | | | | | | | | | | | | | | | | - Vulcan spi controller is compatible with netlogic,xlp832-spi. - Add depends on ARCH_VULCAN to Kconfig to enable spi controller driver for Broadcom Vulcan ARM64 SoCs. Signed-off-by: Kamlakant Patel <kamlakant.patel@broadcom.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | * spi: st-ssc4: Allow compile test buildAxel Lin2016-04-291-1/+1
| |/ | | | | | | | | | | | | | | There is no build dependency for this driver, so enable COMPILE_TEST to get better build coverage. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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*-----. \ Merge remote-tracking branches 'spi/topic/octeon', 'spi/topic/omap2-mcspi', ↵Mark Brown2016-05-231-1/+14
|\ \ \ \ \ | | |_|_|/ | |/| | | | | | | | 'spi/topic/orion', 'spi/topic/pic32' and 'spi/topic/pic32-qspi' into spi-next
| | | | * spi: pic32-sqi: Fix linker error, undefined reference to `bad_dma_ops'.Purna Chandra Mandal2016-05-131-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Even if DMA support is disabled code using DMA mapping APIs compiles fine, but fails in linking. ------- drivers/built-in.o: In function `ring_desc_ring_free': spi-pic32-sqi.c:(.text+0x2cfbe0): undefined reference to `bad_dma_ops' spi-pic32-sqi.c:(.text+0x2cfbe4): undefined reference to `bad_dma_ops' drivers/built-in.o: In function `pic32_sqi_probe': spi-pic32-sqi.c:(.text+0x2cfe48): undefined reference to `bad_dma_ops' spi-pic32-sqi.c:(.text+0x2cfeb0): undefined reference to `bad_dma_ops' spi-pic32-sqi.c:(.text+0x2cff38): undefined reference to `bad_dma_ops' -------- Correct dependency by adding 'depends on HAS_DMA' in Kconfig. Signed-off-by: Purna Chandra Mandal <purna.mandal@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
| | | | * spi: pic32-sqi: add SPI driver for PIC32 SQI controller.Purna Chandra Mandal2016-04-181-0/+6
| | | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This driver implements SPI master interface for Quad SPI controller, specifically for accessing quad SPI flash. It uses descriptor-based DMA transfer mode and supports half-duplex communication for single, dual and quad SPI transactions. Signed-off-by: Purna Chandra Mandal <purna.mandal@microchip.com> Cc: Mark Brown <broonie@kernel.org> Signed-off-by: Mark Brown <broonie@kernel.org>
| | | * spi: spi-pic32: Add PIC32 SPI master driverPurna Chandra Mandal2016-04-041-0/+6
| | |/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | The PIC32 SPI driver is capable of performing SPI transfers using PIO or external DMA engine. GPIO controlled /CS support is made default in the driver for correct operation of the controller. This can be enabled by adding "cs-gpios" property of the SPI node in board dts file. Signed-off-by: Purna Chandra Mandal <purna.mandal@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-11-06 08:25:12 +0100