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Subject[PATCH v1 00/15] add ecspi ERR009165 for i.mx6/7 soc family
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  There is ecspi ERR009165 on i.mx6/7 soc family, which cause FIFO
transfer to be send twice in DMA mode. Please get more information from:
https://www.nxp.com/docs/en/errata/IMX6DQCE.pdf. The workaround is adding
new sdma ram script which works in XCH mode as PIO inside sdma instead
of SMC mode, meanwhile, 'TX_THRESHOLD' should be 0.
The issue should be exist on all legacy i.mx6/7 soc family before i.mx6ul,
NXP fix this design issue from i.mx6ul, so newer chips such as i.mx6ull/
i.mx8mq/i.mx8mm, don't need this workaroud anymore. This patch set
add new 'fsl,imx6ul-ecspi' for ecspi driver and 'ecspi_fixed' in sdma
driver to choose if need errata or not.
The first two reverted patches should be the same issue, though, it
seems 'fixed' by changing to other shp script. Hope Sean or Sascha could
have the chance to test this patch set if could fix their issues.
Besides, enable sdma support for i.mx8mm/8mq and fix ecspi1 not work
on i.mx8mm because the event id is zero.

PS:
Please get sdma firmware from below linux-firmware and copy it to your
local rootfs /lib/firmware/imx/sdma.
https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/imx/sdma

Robin Gong (15):
Revert "ARM: dts: imx6q: Use correct SDMA script for SPI5 core"
Revert "ARM: dts: imx6: Use correct SDMA script for SPI cores"
Revert "dmaengine: imx-sdma: refine to load context only once"
dmaengine: imx-sdma: remove dupilicated sdma_load_context
dma: engine: imx-sdma: add mcu_2_ecspi script
spi: imx: fix ERR009165
spi: imx: remove ERR009165 workaround on i.mx6ul
dt-bindings: spi: imx: add i.mx6ul to state errata fixed
dmaengine: imx-sdma: remove ERR009165 on i.mx6ul
dt-bindings: dma: imx-sdma: add i.mx6ul/6sx compatible name
dmaengine: imx-sdma: fix ecspi1 rx dma not work on i.mx8mm
ARM64: dts: freescale: imx8mm/8mq: update new compatible name for
ecspi and sdma
ARM: dts: imx6ul: add dma support on ecspi
ARM: dts: imx6sll: correct ecspi/sdma compatible
arm64: defconfig: Enable SDMA on i.mx8mq/8mm

.../devicetree/bindings/dma/fsl-imx-sdma.txt | 2 +
.../devicetree/bindings/spi/fsl-imx-cspi.txt | 2 +
arch/arm/boot/dts/imx6q.dtsi | 2 +-
arch/arm/boot/dts/imx6qdl.dtsi | 8 +--
arch/arm/boot/dts/imx6sll.dtsi | 10 ++--
arch/arm/boot/dts/imx6ul.dtsi | 8 +++
arch/arm64/boot/dts/freescale/imx8mm.dtsi | 14 ++---
arch/arm64/boot/dts/freescale/imx8mq.dtsi | 6 +-
arch/arm64/configs/defconfig | 3 +
drivers/dma/imx-sdma.c | 67 ++++++++++++++++------
drivers/spi/spi-imx.c | 46 ++++++++++++---
include/linux/platform_data/dma-imx-sdma.h | 1 +
12 files changed, 124 insertions(+), 45 deletions(-)

--
2.7.4

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