1* Synopsys DWC Ethernet QoS IP version 4.10 driver (GMAC)
2
3
4Required properties:
5- compatible: Should be "snps,dwc-qos-ethernet-4.10"
6- reg: Address and length of the register set for the device
7- clocks: Phandles to the reference clock and the bus clock
8- clock-names: Should be "phy_ref_clk" for the reference clock and "apb_pclk"
9  for the bus clock.
10- interrupt-parent: Should be the phandle for the interrupt controller
11  that services interrupts for this device
12- interrupts: Should contain the core's combined interrupt signal
13- phy-mode: See ethernet.txt file in the same directory
14
15Optional properties:
16- dma-coherent: Present if dma operations are coherent
17- mac-address: See ethernet.txt in the same directory
18- local-mac-address: See ethernet.txt in the same directory
19- snps,en-lpi: If present it enables use of the AXI low-power interface
20- snps,write-requests: Number of write requests that the AXI port can issue.
21  It depends on the SoC configuration.
22- snps,read-requests: Number of read requests that the AXI port can issue.
23  It depends on the SoC configuration.
24- snps,burst-map: Bitmap of allowed AXI burst lengts, with the LSB
25  representing 4, then 8 etc.
26- snps,txpbl: DMA Programmable burst length for the TX DMA
27- snps,rxpbl: DMA Programmable burst length for the RX DMA
28- snps,en-tx-lpi-clockgating: Enable gating of the MAC TX clock during
29  TX low-power mode.
30- phy-handle: See ethernet.txt file in the same directory
31- mdio device tree subnode: When the GMAC has a phy connected to its local
32    mdio, there must be device tree subnode with the following
33    required properties:
34    - compatible: Must be "snps,dwc-qos-ethernet-mdio".
35    - #address-cells: Must be <1>.
36    - #size-cells: Must be <0>.
37
38    For each phy on the mdio bus, there must be a node with the following
39    fields:
40
41    - reg: phy id used to communicate to phy.
42    - device_type: Must be "ethernet-phy".
43    - fixed-mode device tree subnode: see fixed-link.txt in the same directory
44
45Examples:
46ethernet2@40010000 {
47	clock-names = "phy_ref_clk", "apb_pclk";
48	clocks = <&clkc 17>, <&clkc 15>;
49	compatible = "snps,dwc-qos-ethernet-4.10";
50	interrupt-parent = <&intc>;
51	interrupts = <0x0 0x1e 0x4>;
52	reg = <0x40010000 0x4000>;
53	phy-handle = <&phy2>;
54	phy-mode = "gmii";
55
56	snps,en-tx-lpi-clockgating;
57	snps,en-lpi;
58	snps,write-requests = <2>;
59	snps,read-requests = <16>;
60	snps,burst-map = <0x7>;
61	snps,txpbl = <8>;
62	snps,rxpbl = <2>;
63
64	dma-coherent;
65
66	mdio {
67		#address-cells = <0x1>;
68		#size-cells = <0x0>;
69		phy2: phy@1 {
70			compatible = "ethernet-phy-ieee802.3-c22";
71			device_type = "ethernet-phy";
72			reg = <0x1>;
73		};
74	};
75};
76