[PATCH v3 0/5] arm: aspeed: Add UART DMA support

[Chia-Wei Wang]

This patch serias adds the 8250 driver with DMA support for AST26xx UART devices

v3 change:
 - add error check against dma_to_phys
 - revise UDMA binding
 - remove UDMA binding header
 - remove redundant header inclusions of UDMA driver
 - fix incorrect UDMA channel number (14->28)
 - place UDMA kconfig in alphabetical order
 - collect Acked-by tags

v2 change:
 - re-write UDMA driver based on the DMAEngine framework
 - re-write 8250_aspeed driver with DMA support based on the 8250_dma implementation
 - remove virtual UART part as there is already a 8250_aspeed_vuart driver

Chia-Wei Wang (5):
  dt-bindings: serial: 8250: Add aspeed,ast2600-uart
  dt-bindings: dmaengine: Add AST2600 UDMA bindings
  dmaengine: aspeed: Add AST2600 UART DMA driver
  serial: 8250: Add AST2600 UART driver
  ARM: dts: aspeed-g6: Add UDMA node

 .../bindings/dma/aspeed,ast2600-udma.yaml     |  56 ++
 .../devicetree/bindings/serial/8250.yaml      |   1 +
 arch/arm/boot/dts/aspeed-g6.dtsi              |   9 +
 drivers/dma/Kconfig                           |   9 +
 drivers/dma/Makefile                          |   1 +
 drivers/dma/ast2600-udma.c                    | 534 ++++++++++++++++++
 drivers/tty/serial/8250/8250_aspeed.c         | 224 ++++++++
 drivers/tty/serial/8250/Kconfig               |   8 +
 drivers/tty/serial/8250/Makefile              |   1 +
 9 files changed, 843 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/dma/aspeed,ast2600-udma.yaml
 create mode 100644 drivers/dma/ast2600-udma.c
 create mode 100644 drivers/tty/serial/8250/8250_aspeed.c

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2.25.1