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-Analog Devices AXI-DMAC DMA controller
-
-Required properties:
- - compatible: Must be "adi,axi-dmac-1.00.a".
- - reg: Specification for the controllers memory mapped register map.
- - interrupts: Specification for the controllers interrupt.
- - clocks: Phandle and specifier to the controllers AXI interface clock
- - #dma-cells: Must be 1.
-
-Required sub-nodes:
- - adi,channels: This sub-node must contain a sub-node for each DMA channel. For
- the channel sub-nodes the following bindings apply. They must match the
- configuration options of the peripheral as it was instantiated.
-
-Required properties for adi,channels sub-node:
- - #size-cells: Must be 0
- - #address-cells: Must be 1
-
-Required channel sub-node properties:
- - reg: Which channel this node refers to.
- - adi,source-bus-width,
- adi,destination-bus-width: Width of the source or destination bus in bits.
- - adi,source-bus-type,
- adi,destination-bus-type: Type of the source or destination bus. Must be one
- of the following:
- 0 (AXI_DMAC_TYPE_AXI_MM): Memory mapped AXI interface
- 1 (AXI_DMAC_TYPE_AXI_STREAM): Streaming AXI interface
- 2 (AXI_DMAC_TYPE_AXI_FIFO): FIFO interface
-
-Deprecated optional channel properties:
- - adi,length-width: Width of the DMA transfer length register.
- - adi,cyclic: Must be set if the channel supports hardware cyclic DMA
- transfers.
- - adi,2d: Must be set if the channel supports hardware 2D DMA transfers.
-
-DMA clients connected to the AXI-DMAC DMA controller must use the format
-described in the dma.txt file using a one-cell specifier. The value of the
-specifier refers to the DMA channel index.
-
-Example:
-
-dma: dma@7c420000 {
- compatible = "adi,axi-dmac-1.00.a";
- reg = <0x7c420000 0x10000>;
- interrupts = <0 57 0>;
- clocks = <&clkc 16>;
- #dma-cells = <1>;
-
- adi,channels {
- #size-cells = <0>;
- #address-cells = <1>;
-
- dma-channel@0 {
- reg = <0>;
- adi,source-bus-width = <32>;
- adi,source-bus-type = <ADI_AXI_DMAC_TYPE_MM_AXI>;
- adi,destination-bus-width = <64>;
- adi,destination-bus-type = <ADI_AXI_DMAC_TYPE_FIFO>;
- };
- };
-};