From: sudheer veliseti <sudheer.open@xxxxxxxxx> 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 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 -- 2.17.1
