linux-kernel - [RFC PATCH 0/2] dmaengine: xilinx_dma: Add Xilinx AXI MCDMA Engine driver support

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Date:   Tue, 31 Jul 2018 23:16:11 +0530
From:   Radhey Shyam Pandey <radhey.shyam.pandey@...inx.com>
To:     <vkoul@...nel.org>, <robh+dt@...nel.org>, <mark.rutland@....com>,
        <michal.simek@...inx.com>, <dan.j.williams@...el.com>,
        <radhey.shyam.pandey@...inx.com>, <appanad@...inx.com>,
        <lars@...afoo.de>
CC:     <dmaengine@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: [RFC PATCH 0/2] dmaengine: xilinx_dma: Add Xilinx AXI MCDMA Engine driver support

This patchset adds Xilinx AXI MCDMA IP support. The AXI MCDMA provides
high-bandwidth direct memory access between memory and AXI4-Stream target
peripherals. It supports up to 16 independent read/write channels.

MCDMA IP supports per channel interrupt output but driver support one
interrupt per channel for simplification. IP specification/programming
sequence and register description is mentioned in PG [1].

The driver is tested with xilinx internal dmatest client. In end usecase
MCDMA will be used by xilinx axiethernet driver using dma API's.

[1] https://www.xilinx.com/support/documentation/ip_documentation/axi_mcdma/v1_0/pg288-axi-mcdma.pdf

Radhey Shyam Pandey (2):
  dt-bindings: dmaengine: xilinx_dma: Add binding for Xilinx MCDMA IP
  dmaengine: xilinx_dma: Add Xilinx AXI MCDMA Engine driver support

 .../devicetree/bindings/dma/xilinx/xilinx_dma.txt  |  10 +-
 drivers/dma/xilinx/xilinx_dma.c                    | 449 ++++++++++++++++++++-
 2 files changed, 448 insertions(+), 11 deletions(-)

-- 
2.7.4