From mboxrd@z Thu Jan 1 00:00:00 1970 From: appana.durga.rao@xilinx.com (Kedareswara rao Appana) Date: Fri, 24 Jun 2016 10:51:24 +0530 Subject: [PATCH v2 3/5] Documentation: DT: dma: Delete binding doc for AXI DMA In-Reply-To: <1466745686-23898-1-git-send-email-appanad@xilinx.com> References: <1466745686-23898-1-git-send-email-appanad@xilinx.com> Message-ID: <1466745686-23898-4-git-send-email-appanad@xilinx.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org The AXI DMA support is added to the existing AXI VDMA driver. Device tree binding information also updated in the VDMA binding doc. Acked-by: Rob Herring Signed-off-by: Kedareswara rao Appana --- --> Added Rob Acked-by. .../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