[PATCH 3/4] Documentation: DT: dma: Delete binding doc for AXI DMA
From: Kedareswara rao Appana <hidden>
Date: 2016-06-10 09:14:28
Also in:
linux-devicetree, lkml
Subsystem:
dma generic offload engine subsystem, open firmware and flattened device tree bindings, the rest · Maintainers:
Vinod Koul, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
The AXI DMA support is added to the existing AXI VDMA driver. Device tree binding information also updated in the VDMA binding doc. Signed-off-by: Kedareswara rao Appana <redacted> --- .../devicetree/bindings/dma/xilinx/xilinx_dma.txt | 65 -------------------- 1 files changed, 0 insertions(+), 65 deletions(-) delete mode 100644 Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt
diff --git a/Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt b/Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt
deleted file mode 100644
index 3cf0072..0000000
--- a/Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt
+++ /dev/null@@ -1,65 +0,0 @@ -Xilinx AXI DMA engine, it does transfers between memory and AXI4 stream -target devices. It can be configured to have one channel or two channels. -If configured as two channels, one is to transmit to the device and another -is to receive from the device. - -Required properties: -- compatible: Should be "xlnx,axi-dma-1.00.a" -- #dma-cells: Should be <1>, see "dmas" property below -- reg: Should contain DMA registers location and length. -- dma-channel child node: Should have at least one channel and can have up to - two channels per device. This node specifies the properties of each - DMA channel (see child node properties below). - -Optional properties: -- xlnx,include-sg: Tells whether configured for Scatter-mode in - the hardware. - -Required child node properties: -- compatible: It should be either "xlnx,axi-dma-mm2s-channel" or - "xlnx,axi-dma-s2mm-channel". -- interrupts: Should contain per channel DMA interrupts. -- xlnx,datawidth: Should contain the stream data width, take values - {32,64...1024}. - -Option child node properties: -- xlnx,include-dre: Tells whether hardware is configured for Data - Realignment Engine. - -Example: -++++++++ - -axi_dma_0: axidma at 40400000 { - compatible = "xlnx,axi-dma-1.00.a"; - #dma_cells = <1>; - reg = < 0x40400000 0x10000 >; - dma-channel at 40400000 { - compatible = "xlnx,axi-dma-mm2s-channel"; - interrupts = < 0 59 4 >; - xlnx,datawidth = <0x40>; - } ; - dma-channel at 40400030 { - compatible = "xlnx,axi-dma-s2mm-channel"; - interrupts = < 0 58 4 >; - xlnx,datawidth = <0x40>; - } ; -} ; - - -* DMA client - -Required properties: -- dmas: a list of <[DMA device phandle] [Channel ID]> pairs, - where Channel ID is '0' for write/tx and '1' for read/rx - channel. -- dma-names: a list of DMA channel names, one per "dmas" entry - -Example: -++++++++ - -dmatest_0: dmatest at 0 { - compatible ="xlnx,axi-dma-test-1.00.a"; - dmas = <&axi_dma_0 0 - &axi_dma_0 1>; - dma-names = "dma0", "dma1"; -} ;
--
1.7.1