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2016-06-14spi: imx: Update DT binding documentationAlexander Shiyan
Mark "fsl,spi-num-chipselects" property as obsolete. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-03-05spi: fsl-imx-cspi: add explicit compatible strings and required clock propertiesMatt Porter
The fsl-imx-cspi binding contains language indicating compatible strings to be used that is not valid for all supported parts e.g. Should be "fsl,<soc>-cspi" or "fsl,<soc>-ecspi". Fix this by enumerating the set of valid compatible strings. The binding is also missing the clocks/clock-names properties so document these and the two required ipg and per clocks. Signed-off-by: Matt Porter <mporter@konsulko.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-09-17spi: spi-imx: add DMA supportRobin Gong
Enable DMA support on i.mx6. The read speed can increase from 600KB/s to 1.2MB/s on i.mx6q. You can disable or enable dma function in dts. If not set "dma-names" in dts, spi will use PIO mode. This patch only validate on i.mx6, not i.mx5, but encourage ones to apply this patch on i.mx5 since they share the same IP. Note: Sometime, there is a weid data in rxfifo after one full tx/rx transfer finish by DMA on i.mx6dl, so we disable dma functhion on i.mx6dl. Signed-off-by: Frank Li <Frank.Li@freescale.com> Signed-off-by: Robin Gong <b38343@freescale.com> Acked-by: Marek Vasut <marex@denx.de> Signed-off-by: Mark Brown <broonie@kernel.org>
2012-06-13dt: fsl-imx-cspi.txt: Fix comment about GPIOs used for chip selectsFabio Estevam
The gpio numbers does not match the comment. Fix the comments for GPIOs used for chip selects. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Rob Herring <rob.herring@calxeda.com>
2011-07-14spi/imx: add device tree probe supportShawn Guo
It adds device tree probe support for spi-imx driver. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>