1TI SoC Ethernet Switch Controller Device Tree Bindings
2------------------------------------------------------
3
4Required properties:
5- compatible		: Should be one of the below:-
6			  "ti,cpsw" for backward compatible
7			  "ti,am335x-cpsw" for AM335x controllers
8			  "ti,am4372-cpsw" for AM437x controllers
9			  "ti,dra7-cpsw" for DRA7x controllers
10- reg			: physical base address and size of the cpsw
11			  registers map
12- interrupts		: property with a value describing the interrupt
13			  number
14- interrupt-parent	: The parent interrupt controller
15- cpdma_channels 	: Specifies number of channels in CPDMA
16- ale_entries		: Specifies No of entries ALE can hold
17- bd_ram_size		: Specifies internal descriptor RAM size
18- mac_control		: Specifies Default MAC control register content
19			  for the specific platform
20- slaves		: Specifies number for slaves
21- active_slave		: Specifies the slave to use for time stamping,
22			  ethtool and SIOCGMIIPHY
23- cpts_clock_mult	: Numerator to convert input clock ticks into nanoseconds
24- cpts_clock_shift	: Denominator to convert input clock ticks into nanoseconds
25
26Optional properties:
27- ti,hwmods		: Must be "cpgmac0"
28- no_bd_ram		: Must be 0 or 1
29- dual_emac		: Specifies Switch to act as Dual EMAC
30- syscon		: Phandle to the system control device node, which is
31			  the control module device of the am33x
32- mode-gpios		: Should be added if one/multiple gpio lines are
33			  required to be driven so that cpsw data lines
34			  can be connected to the phy via selective mux.
35			  For example in dra72x-evm, pcf gpio has to be
36			  driven low so that cpsw slave 0 and phy data
37			  lines are connected via mux.
38
39
40Slave Properties:
41Required properties:
42- phy-mode		: See ethernet.txt file in the same directory
43
44Optional properties:
45- dual_emac_res_vlan	: Specifies VID to be used to segregate the ports
46- mac-address		: See ethernet.txt file in the same directory
47- phy_id		: Specifies slave phy id (deprecated, use phy-handle)
48- phy-handle		: See ethernet.txt file in the same directory
49
50Slave sub-nodes:
51- fixed-link		: See fixed-link.txt file in the same directory
52
53Note: Exactly one of phy_id, phy-handle, or fixed-link must be specified.
54
55Note: "ti,hwmods" field is used to fetch the base address and irq
56resources from TI, omap hwmod data base during device registration.
57Future plan is to migrate hwmod data base contents into device tree
58blob so that, all the required data will be used from device tree dts
59file.
60
61Examples:
62
63	mac: ethernet@4A100000 {
64		compatible = "ti,cpsw";
65		reg = <0x4A100000 0x1000>;
66		interrupts = <55 0x4>;
67		interrupt-parent = <&intc>;
68		cpdma_channels = <8>;
69		ale_entries = <1024>;
70		bd_ram_size = <0x2000>;
71		no_bd_ram = <0>;
72		rx_descs = <64>;
73		mac_control = <0x20>;
74		slaves = <2>;
75		active_slave = <0>;
76		cpts_clock_mult = <0x80000000>;
77		cpts_clock_shift = <29>;
78		syscon = <&cm>;
79		cpsw_emac0: slave@0 {
80			phy_id = <&davinci_mdio>, <0>;
81			phy-mode = "rgmii-txid";
82			/* Filled in by U-Boot */
83			mac-address = [ 00 00 00 00 00 00 ];
84		};
85		cpsw_emac1: slave@1 {
86			phy_id = <&davinci_mdio>, <1>;
87			phy-mode = "rgmii-txid";
88			/* Filled in by U-Boot */
89			mac-address = [ 00 00 00 00 00 00 ];
90		};
91	};
92
93(or)
94	mac: ethernet@4A100000 {
95		compatible = "ti,cpsw";
96		ti,hwmods = "cpgmac0";
97		cpdma_channels = <8>;
98		ale_entries = <1024>;
99		bd_ram_size = <0x2000>;
100		no_bd_ram = <0>;
101		rx_descs = <64>;
102		mac_control = <0x20>;
103		slaves = <2>;
104		active_slave = <0>;
105		cpts_clock_mult = <0x80000000>;
106		cpts_clock_shift = <29>;
107		syscon = <&cm>;
108		cpsw_emac0: slave@0 {
109			phy_id = <&davinci_mdio>, <0>;
110			phy-mode = "rgmii-txid";
111			/* Filled in by U-Boot */
112			mac-address = [ 00 00 00 00 00 00 ];
113		};
114		cpsw_emac1: slave@1 {
115			phy_id = <&davinci_mdio>, <1>;
116			phy-mode = "rgmii-txid";
117			/* Filled in by U-Boot */
118			mac-address = [ 00 00 00 00 00 00 ];
119		};
120	};
121