[PATCH v4 0/2] Add dma controller driver for HiSilicon Ascend310/910

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The patch set add driver and device-tree bindings for a dma controller
on HiSilicon Ascend310/910 platform.

Changes v3 to v4:
	- dts-binding
		- filename changed to hisilicon,ascend-sdma.yaml
		- use common property "dma-channel-mask"
		- make a clearer description of property "pasid-num-bits"

Changes v2 to v3:
	- Fix dts-binding error:
		* Use "hisilicon" as a unified vendor prefix.

Changes v1 to v2:
	- Fix dts-binding error:
		* change "compatible" to two exact models: ascend310/ascend910.
		* add vendor prefix for customized channel-map property.
		* add $ref for customized channel-map property.
		* remove unnecessary label in example.
	- Logic change in probe function:
		* If iommu sva feature is disabled, probe will not lead to failure
	- Use common driver apis: dev_xxx() devm_xxx()

Guo Mengqi (2):
  dmaengine: Add HiSilicon Ascend SDMA engine support
  dt-bindings: dma: HiSilicon: Add bindings for HiSilicon Ascend sdma

 .../bindings/dma/hisilicon,ascend-sdma.yaml   |  74 ++
 drivers/dma/Kconfig                           |   9 +
 drivers/dma/Makefile                          |   1 +
 drivers/dma/hisi-ascend-sdma.c                | 810 ++++++++++++++++++
 4 files changed, 894 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/dma/hisilicon,ascend-sdma.yaml
 create mode 100644 drivers/dma/hisi-ascend-sdma.c


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