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-* ARM PrimeCells PL080 and PL081 and derivatives DMA controller
-
-Required properties:
-- compatible: "arm,pl080", "arm,primecell";
- "arm,pl081", "arm,primecell";
- "faraday,ftdmac020", "arm,primecell"
-- arm,primecell-periphid: on the FTDMAC020 the primecell ID is not hard-coded
- in the hardware and must be specified here as <0x0003b080>. This number
- follows the PrimeCell standard numbering using the JEP106 vendor code 0x38
- for Faraday Technology.
-- reg: Address range of the PL08x registers
-- interrupt: The PL08x interrupt number
-- clocks: The clock running the IP core clock
-- clock-names: Must contain "apb_pclk"
-- lli-bus-interface-ahb1: if AHB master 1 is eligible for fetching LLIs
-- lli-bus-interface-ahb2: if AHB master 2 is eligible for fetching LLIs
-- mem-bus-interface-ahb1: if AHB master 1 is eligible for fetching memory contents
-- mem-bus-interface-ahb2: if AHB master 2 is eligible for fetching memory contents
-- #dma-cells: must be <2>. First cell should contain the DMA request,
- second cell should contain either 1 or 2 depending on
- which AHB master that is used.
-
-Optional properties:
-- dma-channels: contains the total number of DMA channels supported by the DMAC
-- dma-requests: contains the total number of DMA requests supported by the DMAC
-- memcpy-burst-size: the size of the bursts for memcpy: 1, 4, 8, 16, 32
- 64, 128 or 256 bytes are legal values
-- memcpy-bus-width: the bus width used for memcpy in bits: 8, 16 or 32 are legal
- values, the Faraday FTDMAC020 can also accept 64 bits
-
-Clients
-Required properties:
-- dmas: List of DMA controller phandle, request channel and AHB master id
-- dma-names: Names of the aforementioned requested channels
-
-Example:
-
-dmac0: dma-controller@10130000 {
- compatible = "arm,pl080", "arm,primecell";
- reg = <0x10130000 0x1000>;
- interrupt-parent = <&vica>;
- interrupts = <15>;
- clocks = <&hclkdma0>;
- clock-names = "apb_pclk";
- lli-bus-interface-ahb1;
- lli-bus-interface-ahb2;
- mem-bus-interface-ahb2;
- memcpy-burst-size = <256>;
- memcpy-bus-width = <32>;
- #dma-cells = <2>;
-};
-
-device@40008000 {
- ...
- dmas = <&dmac0 0 2
- &dmac0 1 2>;
- dma-names = "tx", "rx";
- ...
-};