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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/dma/xilinx/xlnx,zynqmp-dma-1.0.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Xilinx ZynqMP DMA Engine
description: |
The Xilinx ZynqMP DMA engine supports 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.
maintainers:
- Michael Tretter <m.tretter@pengutronix.de>
- Harini Katakam <harini.katakam@amd.com>
- Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
allOf:
- $ref: ../dma-controller.yaml#
properties:
"#dma-cells":
const: 1
compatible:
const: xlnx,zynqmp-dma-1.0
reg:
description: memory map for gdma/adma module access
maxItems: 1
interrupts:
description: DMA channel interrupt
maxItems: 1
clocks:
description: input clocks
minItems: 2
maxItems: 2
clock-names:
items:
- const: clk_main
- const: clk_apb
xlnx,bus-width:
$ref: /schemas/types.yaml#/definitions/uint32
enum:
- 64
- 128
description: AXI bus width in bits
iommus:
maxItems: 1
power-domains:
maxItems: 1
dma-coherent:
description: present if dma operations are coherent
required:
- "#dma-cells"
- compatible
- reg
- interrupts
- clocks
- clock-names
- xlnx,bus-width
additionalProperties: false
examples:
- |
#include <dt-bindings/clock/xlnx-zynqmp-clk.h>
fpd_dma_chan1: dma-controller@fd500000 {
compatible = "xlnx,zynqmp-dma-1.0";
reg = <0xfd500000 0x1000>;
interrupt-parent = <&gic>;
interrupts = <0 117 0x4>;
#dma-cells = <1>;
clock-names = "clk_main", "clk_apb";
clocks = <&zynqmp_clk GDMA_REF>, <&zynqmp_clk LPD_LSBUS>;
xlnx,bus-width = <128>;
dma-coherent;
};
|
