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Diffstat (limited to 'Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt')
-rw-r--r-- | Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt b/Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt deleted file mode 100644 index e4c4d47f8137..000000000000 --- a/Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt +++ /dev/null @@ -1,75 +0,0 @@ -Xilinx AXI VDMA engine, it does transfers between memory and video devices. -It can be configured to have one channel or two channels. If configured -as two channels, one is to transmit to the video device and another is -to receive from the video device. - -Required properties: -- compatible: Should be "xlnx,axi-vdma-1.00.a" -- #dma-cells: Should be <1>, see "dmas" property below -- reg: Should contain VDMA registers location and length. -- xlnx,num-fstores: Should be the number of framebuffers as configured in h/w. -- 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 configured for Scatter-mode in - the hardware. -- xlnx,flush-fsync: Tells which channel to Flush on Frame sync. - It takes following values: - {1}, flush both channels - {2}, flush mm2s channel - {3}, flush s2mm channel - -Required child node properties: -- compatible: It should be either "xlnx,axi-vdma-mm2s-channel" or - "xlnx,axi-vdma-s2mm-channel". -- interrupts: Should contain per channel VDMA interrupts. -- xlnx,datawidth: Should contain the stream data width, take values - {32,64...1024}. - -Optional child node properties: -- xlnx,include-dre: Tells hardware is configured for Data - Realignment Engine. -- xlnx,genlock-mode: Tells Genlock synchronization is - enabled/disabled in hardware. - -Example: -++++++++ - -axi_vdma_0: axivdma@40030000 { - compatible = "xlnx,axi-vdma-1.00.a"; - #dma_cells = <1>; - reg = < 0x40030000 0x10000 >; - xlnx,num-fstores = <0x8>; - xlnx,flush-fsync = <0x1>; - dma-channel@40030000 { - compatible = "xlnx,axi-vdma-mm2s-channel"; - interrupts = < 0 54 4 >; - xlnx,datawidth = <0x40>; - } ; - dma-channel@40030030 { - compatible = "xlnx,axi-vdma-s2mm-channel"; - interrupts = < 0 53 4 >; - xlnx,datawidth = <0x40>; - } ; -} ; - - -* DMA client - -Required properties: -- dmas: a list of <[Video 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: -++++++++ - -vdmatest_0: vdmatest@0 { - compatible ="xlnx,axi-vdma-test-1.00.a"; - dmas = <&axi_vdma_0 0 - &axi_vdma_0 1>; - dma-names = "vdma0", "vdma1"; -} ; |