1 * ARM PrimeCells PL080 and PL081 and derivatives DMA controller
4 - compatible: "arm,pl080", "arm,primecell";
5 "arm,pl081", "arm,primecell";
6 "faraday,ftdmac020", "arm,primecell"
7 - arm,primecell-periphid: on the FTDMAC020 the primecell ID is not hard-coded
8 in the hardware and must be specified here as <0x0003b080>. This number
9 follows the PrimeCell standard numbering using the JEP106 vendor code 0x38
10 for Faraday Technology.
11 - reg: Address range of the PL08x registers
12 - interrupt: The PL08x interrupt number
13 - clocks: The clock running the IP core clock
14 - clock-names: Must contain "apb_pclk"
15 - lli-bus-interface-ahb1: if AHB master 1 is eligible for fetching LLIs
16 - lli-bus-interface-ahb2: if AHB master 2 is eligible for fetching LLIs
17 - mem-bus-interface-ahb1: if AHB master 1 is eligible for fetching memory contents
18 - mem-bus-interface-ahb2: if AHB master 2 is eligible for fetching memory contents
19 - #dma-cells: must be <2>. First cell should contain the DMA request,
20 second cell should contain either 1 or 2 depending on
21 which AHB master that is used.
24 - dma-channels: contains the total number of DMA channels supported by the DMAC
25 - dma-requests: contains the total number of DMA requests supported by the DMAC
26 - memcpy-burst-size: the size of the bursts for memcpy: 1, 4, 8, 16, 32
27 64, 128 or 256 bytes are legal values
28 - memcpy-bus-width: the bus width used for memcpy in bits: 8, 16 or 32 are legal
29 values, the Faraday FTDMAC020 can also accept 64 bits
33 - dmas: List of DMA controller phandle, request channel and AHB master id
34 - dma-names: Names of the aforementioned requested channels
38 dmac0: dma-controller@10130000 {
39 compatible = "arm,pl080", "arm,primecell";
40 reg = <0x10130000 0x1000>;
41 interrupt-parent = <&vica>;
44 clock-names = "apb_pclk";
45 lli-bus-interface-ahb1;
46 lli-bus-interface-ahb2;
47 mem-bus-interface-ahb2;
48 memcpy-burst-size = <256>;
49 memcpy-bus-width = <32>;
57 dma-names = "tx", "rx";