work in progress: SPI controller w/DMA SAM9X5
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1 of 23 patches is in this archive. The cover letter announces 23.
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| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 13/23 | AT91 DMA OF support | +0 | 0 replies |
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Cover letter [PATCH 00/23] work in progress: SPI controller w/DMA SAM9X5
On 08/14/2012 03:49 PM, Richard Genoud :
Quoted 11 lines
Nicolas,
I said that I had some work done on sam9g35-ek, here is the spi part, based on your and Jean-Christophe work.
You have to enableCONFIG_ARCH_AT91SAM9X5to get it work.The goal of this patchset is to share the work I've done, it's not ready for upstream, but it may save some time.
It's based on 3.6-rc1 + Jean-Christophe's pinctrl patchset.
Best Regards,
Richard,
Thanks a lot for updating this material: We really appreciate.
We will try to review this material together with Jean-Christophe and colleagues @ Atmel. I hope that we will go forward with this collected material in the near future.
Maybe DMA OF part will not be upstreamed as-is because of an ongoing initiative to build a generic dmaengine OF support.
Quoted 3 lines
Jean-Christophe PLAGNIOL-VILLARD (3):
of: add dma-mask binding
of_spi: add generic binding support to specify cs gpio
I know that Jean-Christophe has had difficulties to have feedback on there parts...
Quoted 10 lines
spi/atmel: add DT support
Nicolas Ferre (6):
spi/atmel_spi: trivial: change some comments spi/atmel_spi: add physical base address spi/atmel_spi: call unmapping on transfers buffers spi/atmel_spi: status information passed through controller data spi/atmel_spi: add flag to controller data for lock operations spi/atmel_spi: add dmaengine support
Quoted 2 lines
Richard Genoud (14):
spi-atmel: update with dmaengine interface
This will certainly be squashed in previous path.
Quoted 1 line
spi-atmel: fix __init/__devinit sections mismatch
This one also: but it is good to have them separated at fist.
Quoted 3 lines
spi-atmel: Fix spi-atmel driver to adapt to
slave_configchanges AT91 DMA OF support
add at91sam9x5KconfigARCH/SOC link
Is it fixup for a bug? Jean-Christophe, a though about this one?
Quoted 7 lines
spi-atmel: add DMA OF support
[BUG] SPI: array out of bound => no CS [BUG] atmel-spi && DMA: OOPS if buffer > 4400 bytes
sam9x5: declare SPI clocks
spi-atmel: add sam9x5 SPI in device tree
spi-atmel: add dma support in sam9x5 device tree spi-atmel OF: complete documentation
Maybe documentation has to be folded in the patch that actually adds the OF support.
Quoted 24 lines
spi-atmel: complete DMA slave OF documentation
sam9x5ek DTS: enable SPI dataflashDocumentation/devicetree/bindings/spi/spi-bus.txt | 6 + .../devicetree/bindings/spi/spi_atmel.txt | 46 ++ arch/arm/boot/dts/at91sam9x5.dtsi | 42 ++ arch/arm/boot/dts/at91sam9x5ek.dtsi | 10 + arch/arm/mach-at91/Kconfig | 4 + arch/arm/mach-at91/at91sam9x5.c | 3 + arch/arm/mach-at91/include/mach/at_hdmac.h | 1 + drivers/of/Kconfig | 4 + drivers/of/Makefile | 1 + drivers/of/of_atmel.c | 111 ++++ drivers/of/platform.c | 23 +- drivers/spi/Kconfig | 9 + drivers/spi/spi-atmel.c | 611 ++++++++++++++++++-- drivers/spi/spi.c | 55 ++- include/linux/of_atmel.h | 29 + include/linux/spi/spi.h | 3 + 16 files changed, 914 insertions(+), 44 deletions(-) create mode 100644 Documentation/devicetree/bindings/spi/spi_atmel.txt create mode 100644 drivers/of/of_atmel.c create mode 100644 include/linux/of_atmel.h
Signature · 1 line
Nicolas Ferre