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Documentation / devicetree / bindings / net / arc_emac.txt




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Based on kernel version 4.7.2. Page generated on 2016-08-22 22:42 EST.

1	* Synopsys ARC EMAC 10/100 Ethernet driver (EMAC)
2	
3	Required 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	
10	Optional 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	
17	Clock handling:
18	The clock frequency is needed to calculate and set polling period of EMAC.
19	It must be provided by one of:
20	- clock-frequency: CPU frequency.
21	- clocks: reference to the clock supplying the EMAC.
22	
23	Child nodes of the driver are the individual PHY devices connected to the
24	MDIO bus. They must have a "reg" property given the PHY address on the MDIO bus.
25	
26	Examples:
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		};
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