From 805abc5f2f5d374086114f941e5bb6cb02e0c955 Mon Sep 17 00:00:00 2001 From: Kedareswara rao Appana Date: Fri, 1 Jul 2016 17:07:05 +0530 Subject: [PATCH] Documentation: DT: dma: Add Xilinx zynqmp dma device tree binding documentation Device-tree binding documentation for Xilinx zynqmp dma engine used in Zynq UltraScale+ MPSoC. Acked-by: Rob Herring Signed-off-by: Punnaiah Choudary Kalluri Signed-off-by: Kedareswara rao Appana Signed-off-by: Vinod Koul --- .../bindings/dma/xilinx/zynqmp_dma.txt | 27 +++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 Documentation/devicetree/bindings/dma/xilinx/zynqmp_dma.txt diff --git a/Documentation/devicetree/bindings/dma/xilinx/zynqmp_dma.txt b/Documentation/devicetree/bindings/dma/xilinx/zynqmp_dma.txt new file mode 100644 index 000000000000..a784cdd94790 --- /dev/null +++ b/Documentation/devicetree/bindings/dma/xilinx/zynqmp_dma.txt @@ -0,0 +1,27 @@ +Xilinx ZynqMP DMA engine, it does support memory to memory transfers, +memory to device and device to memory transfers. It also has flow +control and rate control support for slave/peripheral dma access. + +Required properties: +- compatible : Should be "xlnx,zynqmp-dma-1.0" +- reg : Memory map for gdma/adma module access. +- interrupt-parent : Interrupt controller the interrupt is routed through +- interrupts : Should contain DMA channel interrupt. +- xlnx,bus-width : Axi buswidth in bits. Should contain 128 or 64 +- clock-names : List of input clocks "clk_main", "clk_apb" + (see clock bindings for details) + +Optional properties: +- dma-coherent : Present if dma operations are coherent. + +Example: +++++++++ +fpd_dma_chan1: dma@fd500000 { + compatible = "xlnx,zynqmp-dma-1.0"; + reg = <0x0 0xFD500000 0x1000>; + interrupt-parent = <&gic>; + interrupts = <0 117 4>; + clock-names = "clk_main", "clk_apb"; + xlnx,bus-width = <128>; + dma-coherent; +}; -- 2.39.5