1* Synopsys ARC EMAC 10/100 Ethernet driver (EMAC)
2
3Required properties:
4- compatible: Should be "snps,arc-emac"
5- reg: Address and length of the register set for the device
6- interrupts: Should contain the EMAC interrupts
7- max-speed: see ethernet.txt file in the same directory.
8- phy: see ethernet.txt file in the same directory.
9
10Optional properties:
11- phy-reset-gpios : Should specify the gpio for phy reset
12- phy-reset-duration : Reset duration in milliseconds.  Should present
13  only if property "phy-reset-gpios" is available.  Missing the property
14  will have the duration be 1 millisecond.  Numbers greater than 1000 are
15  invalid and 1 millisecond will be used instead.
16
17Clock handling:
18The clock frequency is needed to calculate and set polling period of EMAC.
19It must be provided by one of:
20- clock-frequency: CPU frequency.
21- clocks: reference to the clock supplying the EMAC.
22
23Child nodes of the driver are the individual PHY devices connected to the
24MDIO bus. They must have a "reg" property given the PHY address on the MDIO bus.
25
26Examples:
27
28	ethernet@c0fc2000 {
29		compatible = "snps,arc-emac";
30		reg = <0xc0fc2000 0x3c>;
31		interrupts = <6>;
32		mac-address = [ 00 11 22 33 44 55 ];
33
34		clock-frequency = <80000000>;
35		/* or */
36		clocks = <&emac_clock>;
37
38		max-speed = <100>;
39		phy = <&phy0>;
40
41		#address-cells = <1>;
42		#size-cells = <0>;
43		phy0: ethernet-phy@0 {
44			reg = <1>;
45		};
46	};
47