Add support for UniPhier external DMA controller (XDMAC), that is
implemented in Pro4, Pro5, PXs2, LD11, LD20 and PXs3 SoCs.

Changes since v3:
- dt-bindings: Fix typo

Changes since v2:
- dt-bindings: Fix SPDX and some properties
- Fix iteration count calculation for memcpy
- Replace zero-length array with flexible-array member in struct
  uniphier_xdmac_device.

Changes since v1:
- dt-bindings: Rewrite with DT schema.
- Change return type of uniphier_xdmac_chan_init() to void,
  and remove error return in probe.

Kunihiko Hayashi (2):
  dt-bindings: dmaengine: Add UniPhier external DMA controller bindings
  dmaengine: uniphier-xdmac: Add UniPhier external DMA controller driver

 .../bindings/dma/socionext,uniphier-xdmac.yaml     |  63 +++
 drivers/dma/Kconfig                                |  11 +
 drivers/dma/Makefile                               |   1 +
 drivers/dma/uniphier-xdmac.c                       | 611 +++++++++++++++++++++
 4 files changed, 686 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/dma/socionext,uniphier-xdmac.yaml
 create mode 100644 drivers/dma/uniphier-xdmac.c

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2.7.4