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a39e65e9cc
linux/drivers/spi
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Lars-Peter Clausen a39e65e9cc spi: cadence: Make sure that clock polarity changes are applied 
It seems that the cadence SPI controller does not immediately change the clock
polarity setting when writing the CR register. Instead the change is delayed
until the next transfer starts. This happens after the chip select line has
already been asserted. As a result the first transfer after a clock polarity
change will generate spurious clock transitions which typically results in the
SPI slave not being able to properly understand the message. Toggling the ER
register seems to cause the SPI controller to apply the clock polarity changes,
so implement this as a workaround to fix the issue.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-07-11 14:39:26 +01:00
..
Kconfig Merge remote-tracking branches 'spi/topic/adi', 'spi/topic/atmel' and 'spi/topic/cadence' into spi-next 2014-06-02 17:08:35 +01:00
Makefile Merge remote-tracking branches 'spi/topic/adi', 'spi/topic/atmel' and 'spi/topic/cadence' into spi-next 2014-06-02 17:08:35 +01:00
spi-adi-v3.c spi: spi-adi-v3: convert to use common clk framework 2014-04-14 17:45:25 +01:00
spi-altera.c Merge remote-tracking branches 'spi/topic/imx', 'spi/topic/init', 'spi/topic/mpc512x-psc', 'spi/topic/mpc52xx', 'spi/topic/mxs', 'spi/topic/nuc900', 'spi/topic/oc-tiny' and 'spi/topic/octeon' into spi-next 2014-03-30 00:51:17 +00:00
spi-ath79.c spi: Remove unneeded include of linux/workqueue.h 2014-04-14 17:20:15 +01:00
spi-atmel.c Merge remote-tracking branches 'spi/topic/adi', 'spi/topic/atmel' and 'spi/topic/cadence' into spi-next 2014-06-02 17:08:35 +01:00
spi-au1550.c Merge branch 'mips-for-linux-next' of git://git.linux-mips.org/pub/scm/ralf/upstream-sfr 2014-04-02 13:40:50 -07:00
spi-bcm63xx-hsspi.c spi: Remove unneeded include of linux/workqueue.h 2014-04-14 17:20:15 +01:00
spi-bcm63xx.c spi: Remove unneeded include of linux/workqueue.h 2014-04-14 17:20:15 +01:00
spi-bcm2835.c spi: Remove explictly set bus_num and num_chipselect to default setting 2014-02-16 09:51:02 +08:00
spi-bfin5xx.c spi: bfin5xx: fix build error 2014-04-14 20:44:15 +01:00
spi-bfin-sport.c spi: delete non-required instances of include <linux/init.h> 2014-02-03 12:20:35 +00:00
spi-bitbang-txrx.h spi: bitbang: Grammar s/make to make/to make/ 2014-01-13 11:24:21 +00:00
spi-bitbang.c Merge remote-tracking branches 'spi/topic/imx', 'spi/topic/init', 'spi/topic/mpc512x-psc', 'spi/topic/mpc52xx', 'spi/topic/mxs', 'spi/topic/nuc900', 'spi/topic/oc-tiny' and 'spi/topic/octeon' into spi-next 2014-03-30 00:51:17 +00:00
spi-butterfly.c spi: bitbang: Make spi_bitbang_stop() return void 2014-03-29 11:09:26 +00:00
spi-cadence.c spi: cadence: Make sure that clock polarity changes are applied 2014-07-11 14:39:26 +01:00
spi-clps711x.c Merge remote-tracking branches 'spi/topic/imx', 'spi/topic/init', 'spi/topic/mpc512x-psc', 'spi/topic/mpc52xx', 'spi/topic/mxs', 'spi/topic/nuc900', 'spi/topic/oc-tiny' and 'spi/topic/octeon' into spi-next 2014-03-30 00:51:17 +00:00
spi-coldfire-qspi.c Merge remote-tracking branches 'spi/topic/bus-num', 'spi/topic/cleanup', 'spi/topic/clps711x', 'spi/topic/coldfire', 'spi/topic/completion' and 'spi/topic/davinci' into spi-next 2014-03-30 00:51:03 +00:00
spi-davinci.c spi: davinci: Use of_match_ptr at appropriate place 2014-02-06 12:52:59 +00:00
spi-dw-mid.c dmaengine: remove DMA unmap flags 2013-11-14 11:04:38 -08:00
spi-dw-mmio.c spi: dw: add support for gpio controlled chip select 2014-04-24 18:09:05 +01:00
spi-dw-pci.c Merge remote-tracking branches 'spi/topic/fsl-espi', 'spi/topic/gpio', 'spi/topic/hspi', 'spi/topic/mpc512x', 'spi/topic/msiof', 'spi/topic/nuc900', 'spi/topic/oc-tiny', 'spi/topic/omap', 'spi/topic/orion' and 'spi/topic/pci' into spi-linus 2014-01-23 13:07:09 +00:00
spi-dw.c spi: dw: Remove unused dw_spi_cleanup function 2014-05-12 22:04:18 +01:00
spi-dw.h spi: dw: add support for gpio controlled chip select 2014-04-24 18:09:05 +01:00
spi-efm32.c Merge remote-tracking branches 'spi/topic/drivers', 'spi/topic/dw', 'spi/topic/efm32', 'spi/topic/ep93xx', 'spi/topic/fsl', 'spi/topic/fsl-dspi', 'spi/topic/fsl-espi' and 'spi/topic/gpio' into spi-next 2014-03-30 00:51:10 +00:00
spi-ep93xx.c spi: ep93xx: Convert to let spi core handle checking transfer speed 2014-02-14 20:24:53 +00:00
spi-falcon.c spi: Remove unneeded include of linux/workqueue.h 2014-04-14 17:20:15 +01:00
spi-fsl-cpm.c DeviceTree updates for 3.13. This is a bit larger pull request than 2013-11-12 16:52:17 +09:00
spi-fsl-cpm.h
spi-fsl-dspi.c spi: fsl-dspi: Make of_device_id array const 2014-05-07 20:53:04 +01:00
spi-fsl-espi.c Merge remote-tracking branches 'spi/topic/dw', 'spi/topic/fsl', 'spi/topic/fsl-espi' and 'spi/topic/id-const' into spi-next 2014-06-02 17:08:38 +01:00
spi-fsl-lib.c spi: fsl: Kill mpc8xxx_spi_cleanup and convert fsl_espi_setup to use devm_kzalloc 2014-04-14 17:18:55 +01:00
spi-fsl-lib.h spi: fsl: Kill mpc8xxx_spi_cleanup and convert fsl_espi_setup to use devm_kzalloc 2014-04-14 17:18:55 +01:00
spi-fsl-spi.c spi: fsl-spi: Fix memory leak 2014-04-14 17:18:55 +01:00
spi-fsl-spi.h
spi-gpio.c spi: spi-gpio: Make of_device_id array const 2014-05-07 20:53:04 +01:00
spi-imx.c Merge remote-tracking branches 'spi/topic/imx', 'spi/topic/init', 'spi/topic/mpc512x-psc', 'spi/topic/mpc52xx', 'spi/topic/mxs', 'spi/topic/nuc900', 'spi/topic/oc-tiny' and 'spi/topic/octeon' into spi-next 2014-03-30 00:51:17 +00:00
spi-lm70llp.c spi: bitbang: Let spi_bitbang_start() take a reference to master 2013-10-07 14:50:43 +01:00
spi-mpc52xx-psc.c Merge remote-tracking branches 'spi/fix/complete', 'spi/fix/efm32', 'spi/fix/omap2-mcspi' and 'spi/fix/qup' into spi-linus 2014-04-10 23:39:52 +01:00
spi-mpc52xx.c Merge remote-tracking branches 'spi/fix/complete', 'spi/fix/efm32', 'spi/fix/omap2-mcspi' and 'spi/fix/qup' into spi-linus 2014-04-10 23:39:52 +01:00
spi-mpc512x-psc.c Merge remote-tracking branches 'spi/fix/complete', 'spi/fix/efm32', 'spi/fix/omap2-mcspi' and 'spi/fix/qup' into spi-linus 2014-04-10 23:39:52 +01:00
spi-mxs.c Merge remote-tracking branches 'spi/topic/imx', 'spi/topic/init', 'spi/topic/mpc512x-psc', 'spi/topic/mpc52xx', 'spi/topic/mxs', 'spi/topic/nuc900', 'spi/topic/oc-tiny' and 'spi/topic/octeon' into spi-next 2014-03-30 00:51:17 +00:00
spi-nuc900.c spi: Remove unneeded include of linux/workqueue.h 2014-04-14 17:20:15 +01:00
spi-oc-tiny.c Merge remote-tracking branches 'spi/topic/imx', 'spi/topic/init', 'spi/topic/mpc512x-psc', 'spi/topic/mpc52xx', 'spi/topic/mxs', 'spi/topic/nuc900', 'spi/topic/oc-tiny' and 'spi/topic/octeon' into spi-next 2014-03-30 00:51:17 +00:00
spi-octeon.c Merge remote-tracking branches 'spi/topic/imx', 'spi/topic/init', 'spi/topic/mpc512x-psc', 'spi/topic/mpc52xx', 'spi/topic/mxs', 'spi/topic/nuc900', 'spi/topic/oc-tiny' and 'spi/topic/octeon' into spi-next 2014-03-30 00:51:17 +00:00
spi-omap2-mcspi.c Merge remote-tracking branches 'spi/fix/complete', 'spi/fix/efm32', 'spi/fix/omap2-mcspi' and 'spi/fix/qup' into spi-linus 2014-04-10 23:39:52 +01:00
spi-omap-100k.c spi: omap-100k: Fix memory leak 2014-03-29 10:01:13 +00:00
spi-omap-uwire.c spi: Remove unneeded include of linux/workqueue.h 2014-04-14 17:20:15 +01:00
spi-orion.c Merge remote-tracking branches 'spi/topic/omap-uwire', 'spi/topic/omap100k', 'spi/topic/omap2', 'spi/topic/orion', 'spi/topic/pl022', 'spi/topic/qup', 'spi/topic/rspi' and 'spi/topic/s3c24xx' into spi-next 2014-03-30 00:51:27 +00:00
spi-pl022.c spi: pl022: remove unnecessary OOM messages 2014-04-29 12:01:41 -07:00
spi-ppc4xx.c spi: delete non-required instances of include <linux/init.h> 2014-02-03 12:20:35 +00:00
spi-pxa2xx-dma.c spi/pxa2xx: Prevent DMA from transferring too many bytes 2014-05-12 22:05:37 +01:00
spi-pxa2xx-pci.c spi/pxa2xx-pci: Add PCI mode support for BayTrail LPSS SPI 2014-04-18 18:06:07 +01:00
spi-pxa2xx-pxadma.c spi: delete non-required instances of include <linux/init.h> 2014-02-03 12:20:35 +00:00
spi-pxa2xx.c Merge remote-tracking branch 'spi/topic/workqueue' into spi-next 2014-06-02 17:08:43 +01:00
spi-pxa2xx.h
spi-qup.c Merge remote-tracking branches 'spi/topic/dw', 'spi/topic/fsl', 'spi/topic/fsl-espi' and 'spi/topic/id-const' into spi-next 2014-06-02 17:08:38 +01:00
spi-rspi.c spi: rspi: Extract rspi_common_transfer() 2014-06-02 15:49:36 +01:00
spi-s3c24xx-fiq.h
spi-s3c24xx-fiq.S
spi-s3c24xx.c Merge remote-tracking branch 'spi/topic/workqueue' into spi-next 2014-06-02 17:08:43 +01:00
spi-s3c64xx.c Merge remote-tracking branch 'spi/topic/workqueue' into spi-next 2014-06-02 17:08:43 +01:00
spi-sc18is602.c spi: sc18is602: Convert to let spi core validate transfer speed 2014-03-13 09:47:05 +00:00
spi-sh-hspi.c spi: sh-hspi: Do not specifically request shyway_clk clock 2014-04-14 21:14:54 +01:00
spi-sh-msiof.c spi: sh-msiof: remove unnecessary OOM messages 2014-04-29 12:01:41 -07:00
spi-sh-sci.c spi: Remove unneeded include of linux/workqueue.h 2014-04-14 17:20:15 +01:00
spi-sh.c spi: Always check complete callback before calling it 2014-04-03 11:13:38 +01:00
spi-sirf.c spi: sirf: decrease the interrupt count and latency of PIO mode 2014-05-20 23:24:20 +01:00
spi-sun4i.c spi: Remove unneeded include of linux/workqueue.h 2014-04-14 17:20:15 +01:00
spi-sun6i.c spi: Remove unneeded include of linux/workqueue.h 2014-04-14 17:20:15 +01:00
spi-tegra20-sflash.c spi: tegra20-sflash: Make of_device_id array const 2014-05-07 20:53:05 +01:00
spi-tegra20-slink.c spi: tegra20-slink: Make of_device_id array const 2014-05-07 20:53:05 +01:00
spi-tegra114.c spi: tegra114: Make of_device_id array const 2014-05-07 20:53:05 +01:00
spi-ti-qspi.c Merge remote-tracking branches 'spi/topic/sunxi', 'spi/topic/tegra114', 'spi/topic/ti-qspi', 'spi/topic/ti-ssp', 'spi/topic/topcliff-pch', 'spi/topic/txx9', 'spi/topic/xcomm' and 'spi/topic/xfer' into spi-next 2014-03-30 00:51:41 +00:00
spi-tle62x0.c spi: tle62x0: remove unnecessary OOM messages 2014-04-29 12:01:42 -07:00
spi-topcliff-pch.c spi: topcliff-pch: remove unnecessary OOM messages 2014-04-29 12:01:42 -07:00
spi-txx9.c Merge remote-tracking branches 'spi/fix/complete', 'spi/fix/efm32', 'spi/fix/omap2-mcspi' and 'spi/fix/qup' into spi-linus 2014-04-10 23:39:52 +01:00
spi-xcomm.c Merge remote-tracking branches 'spi/topic/sunxi', 'spi/topic/tegra114', 'spi/topic/ti-qspi', 'spi/topic/ti-ssp', 'spi/topic/topcliff-pch', 'spi/topic/txx9', 'spi/topic/xcomm' and 'spi/topic/xfer' into spi-next 2014-03-30 00:51:41 +00:00
spi-xilinx.c Merge remote-tracking branches 'spi/topic/xilinx' and 'spi/topic/xtfpga' into spi-next 2014-03-30 00:51:48 +00:00
spi-xtensa-xtfpga.c spi: add xtfpga SPI controller driver 2014-03-13 09:12:44 +00:00
spi.c Merge remote-tracking branch 'spi/topic/dt' into spi-next 2014-06-02 17:08:35 +01:00
spidev.c spi: spidev: Add support for Dual/Quad SPI Transfers 2014-02-27 13:51:29 +09:00