1* Broadcom Starfighter 2 integrated swich
2
3Required properties:
4
5- compatible: should be one of
6	"brcm,bcm7445-switch-v4.0"
7	"brcm,bcm7278-switch-v4.0"
8	"brcm,bcm7278-switch-v4.8"
9- reg: addresses and length of the register sets for the device, must be 6
10  pairs of register addresses and lengths
11- interrupts: interrupts for the devices, must be two interrupts
12- #address-cells: must be 1, see dsa/dsa.txt
13- #size-cells: must be 0, see dsa/dsa.txt
14
15Deprecated binding required properties:
16
17- dsa,mii-bus: phandle to the MDIO bus controller, see dsa/dsa.txt
18- dsa,ethernet: phandle to the CPU network interface controller, see dsa/dsa.txt
19- #address-cells: must be 2, see dsa/dsa.txt
20
21Subnodes:
22
23The integrated switch subnode should be specified according to the binding
24described in dsa/dsa.txt.
25
26Optional properties:
27
28- reg-names: litteral names for the device base register addresses, when present
29  must be: "core", "reg", "intrl2_0", "intrl2_1", "fcb", "acb"
30
31- interrupt-names: litternal names for the device interrupt lines, when present
32  must be: "switch_0" and "switch_1"
33
34- brcm,num-gphy: specify the maximum number of integrated gigabit PHYs in the
35  switch
36
37- brcm,num-rgmii-ports: specify the maximum number of RGMII interfaces supported
38  by the switch
39
40- brcm,fcb-pause-override: boolean property, if present indicates that the switch
41  supports Failover Control Block pause override capability
42
43- brcm,acb-packets-inflight: boolean property, if present indicates that the switch
44  Admission Control Block supports reporting the number of packets in-flight in a
45  switch queue
46
47- resets: a single phandle and reset identifier pair. See
48  Documentation/devicetree/bindings/reset/reset.txt for details.
49
50- reset-names: If the "reset" property is specified, this property should have
51  the value "switch" to denote the switch reset line.
52
53- clocks: when provided, the first phandle is to the switch's main clock and
54  is valid for both BCM7445 and BCM7278. The second phandle is only applicable
55  to BCM7445 and is to support dividing the switch core clock.
56
57- clock-names: when provided, the first phandle must be "sw_switch", and the
58  second must be named "sw_switch_mdiv".
59
60Port subnodes:
61
62Optional properties:
63
64- brcm,use-bcm-hdr: boolean property, if present, indicates that the switch
65  port has Broadcom tags enabled (per-packet metadata)
66
67Example:
68
69switch_top@f0b00000 {
70	compatible = "simple-bus";
71	#size-cells = <1>;
72	#address-cells = <1>;
73	ranges = <0 0xf0b00000 0x40804>;
74
75	ethernet_switch@0 {
76		compatible = "brcm,bcm7445-switch-v4.0";
77		#size-cells = <0>;
78		#address-cells = <1>;
79		reg = <0x0 0x40000
80			0x40000 0x110
81			0x40340 0x30
82			0x40380 0x30
83			0x40400 0x34
84			0x40600 0x208>;
85		reg-names = "core", "reg", intrl2_0", "intrl2_1",
86			    "fcb, "acb";
87		interrupts = <0 0x18 0
88				0 0x19 0>;
89		brcm,num-gphy = <1>;
90		brcm,num-rgmii-ports = <2>;
91		brcm,fcb-pause-override;
92		brcm,acb-packets-inflight;
93
94		ports {
95			#address-cells = <1>;
96			#size-cells = <0>;
97
98			port@0 {
99				label = "gphy";
100				reg = <0>;
101			};
102		};
103	};
104};
105
106Example using the old DSA DeviceTree binding:
107
108switch_top@f0b00000 {
109	compatible = "simple-bus";
110	#size-cells = <1>;
111	#address-cells = <1>;
112	ranges = <0 0xf0b00000 0x40804>;
113
114	ethernet_switch@0 {
115		compatible = "brcm,bcm7445-switch-v4.0";
116		#size-cells = <0>;
117		#address-cells = <2>;
118		reg = <0x0 0x40000
119			0x40000 0x110
120			0x40340 0x30
121			0x40380 0x30
122			0x40400 0x34
123			0x40600 0x208>;
124		interrupts = <0 0x18 0
125				0 0x19 0>;
126		brcm,num-gphy = <1>;
127		brcm,num-rgmii-ports = <2>;
128		brcm,fcb-pause-override;
129		brcm,acb-packets-inflight;
130
131		...
132		switch@0 {
133			reg = <0 0>;
134			#size-cells = <0>;
135			#address-cells <1>;
136
137			port@0 {
138				label = "gphy";
139				reg = <0>;
140				brcm,use-bcm-hdr;
141			};
142			...
143		};
144	};
145};
146