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From:   "sudheer.v" <open.sudheer@gmail.com>
To:     gregkh@linuxfoundation.org, jslaby@suse.com, joel@jms.id.au,
        andrew@aj.id.au, benh@kernel.crashing.org, robh+dt@kernel.org,
        mark.rutland@arm.com,
        shivahshankar.shankarnarayanrao@aspeedtech.com,
        shivahshankar@gmail.com, sudheer.veliseti@aspeedtech.com
Cc:     sudheer veliseti <sudheer.open@gmail.com>,
        linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org,
        devicetree@vger.kernel.org, linux-aspeed@lists.ozlabs.org
Subject: [patch v3 0/5] *** DMA based UART driver for AST2500 ***
Date:   Tue, 25 Jun 2019 16:14:31 +0530
Message-Id: <1561459476-14268-1-git-send-email-open.sudheer@gmail.com>
Sender: linux-kernel-owner@vger.kernel.org
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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

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2.17.1