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SubjectRe: [RESEND PATCH v5 0/4] Add STM32 DMAMUX support
On Fri, Sep 22, 2017 at 09:31:28AM +0200, Pierre-Yves MORDRET wrote:
> This patchset adds support for the STM32 DMA multiplexer.
> It allows to map any peripheral DMA request to any channel of the product
> DMAs.
> This IP has been introduced with STM32H7 SoC.

Applied first three patches, thanks

> ---
> Version history:
> v5:
> * Set selected channel ID within a lock to avoid race condition.
> Release if any error occurs
> v4:
> * Add multi-master ability for STM32 DMAMUX
> * Get rid of st,dmamux property and custom API between STM32
> DMAMUX and DMA. Bindings has changed.
> DMAMUX will read DMA masters from Device Tree from now on.
> Merely one DMAMUX node is needed now.
> * Only STM32 DMA are allowed to be connected onto DMAMUX
> * channelID is computed locally within the driver and crafted in
> dma_psec to be passed toward DMA master.
> DMAMUX router sorts out which DMA master will serve the
> request automatically.
> * This version forbids the use of DMA in standalone and DMAMUX at
> the same time : all clients need to be connected either on DMA
> or DMAMUX ; no mix up
> v3:
> * change compatible to st,stm32h7-dmamux to be mode Soc specific
> * add verbosity in dma-cells
> ---
>
> Pierre-Yves MORDRET (4):
> dt-bindings: Document the STM32 DMAMUX bindings
> dmaengine: Add STM32 DMAMUX driver
> dt-bindings: stm32-dma: add a property to handle STM32 DMAMUX
> ARM: configs: stm32: Add DMAMUX support in STM32 defconfig
>
> .../devicetree/bindings/dma/stm32-dma.txt | 4 +-
> .../devicetree/bindings/dma/stm32-dmamux.txt | 84 ++++++
> arch/arm/configs/stm32_defconfig | 1 +
> drivers/dma/Kconfig | 9 +
> drivers/dma/Makefile | 1 +
> drivers/dma/stm32-dmamux.c | 327 +++++++++++++++++++++
> 6 files changed, 425 insertions(+), 1 deletion(-)
> create mode 100644 Documentation/devicetree/bindings/dma/stm32-dmamux.txt
> create mode 100644 drivers/dma/stm32-dmamux.c
>
> --
> 2.7.4
>

--
~Vinod

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