[v3,0/5] *** DMA based UART driver for AST2500 ***
mbox series

Message ID 1561459476-14268-1-git-send-email-open.sudheer@gmail.com
Headers show
Series
  • *** DMA based UART driver for AST2500 ***
Related show

Message

sudheer v June 25, 2019, 10:44 a.m. UTC
From: sudheer veliseti <sudheer.open@gmail.com>

Hi,
AST2500 has dedicated Uart DMA controller which has 12 sets of
Tx and RX channels connected to UART controller directly.
Since the DMA controller have dedicated buffers and registers,
there would be little benifit in adding DMA framework overhead.
So the software for DMA controller is included within the UART driver itself.

Thanks and Regards
Sudheer.V

changes in v3:
- custom debugs replaced with pr_debug in 8250_ast2500_uart_dma.c
- change logs added in patches

sudheer veliseti (5):
  AST2500 DMA UART driver
  build configuration for AST2500 DMA UART driver
  DT nodes for AST2500 DMA UART driver
  defconfig and MAINTAINERS updated for AST2500 DMA UART driver
  Documentation: DT bindings AST2500 DMA UART driver

 .../bindings/serial/ast2500-dma-uart.txt      |   40 +
 MAINTAINERS                                   |   13 +
 arch/arm/boot/dts/aspeed-ast2500-evb.dts      |   21 +
 arch/arm/boot/dts/aspeed-g5.dtsi              |   71 +-
 arch/arm/configs/aspeed_g5_defconfig          |    1 +
 .../tty/serial/8250/8250_ast2500_uart_dma.c   | 1879 +++++++++++++++++
 drivers/tty/serial/8250/Kconfig               |   35 +-
 drivers/tty/serial/8250/Makefile              |    1 +
 8 files changed, 2056 insertions(+), 5 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/serial/ast2500-dma-uart.txt
 create mode 100644 drivers/tty/serial/8250/8250_ast2500_uart_dma.c