1 TI SoC Ethernet Switch Controller Device Tree 1 TI SoC Ethernet Switch Controller Device Tree Bindings
2 ---------------------------------------------- 2 ------------------------------------------------------
3 3
4 Required properties: 4 Required properties:
5 - compatible : Should be one of the 5 - compatible : Should be one of the below:-
6 "ti,cpsw" for backwa 6 "ti,cpsw" for backward compatible
7 "ti,am335x-cpsw" for 7 "ti,am335x-cpsw" for AM335x controllers
8 "ti,am4372-cpsw" for 8 "ti,am4372-cpsw" for AM437x controllers
9 "ti,dra7-cpsw" for D 9 "ti,dra7-cpsw" for DRA7x controllers
10 - reg : physical base addres 10 - reg : physical base address and size of the cpsw
11 registers map 11 registers map
12 - interrupts : property with a valu 12 - interrupts : property with a value describing the interrupt
13 number 13 number
>> 14 - interrupt-parent : The parent interrupt controller
14 - cpdma_channels : Specifies number of 15 - cpdma_channels : Specifies number of channels in CPDMA
15 - ale_entries : Specifies No of entr 16 - ale_entries : Specifies No of entries ALE can hold
16 - bd_ram_size : Specifies internal d 17 - bd_ram_size : Specifies internal descriptor RAM size
17 - mac_control : Specifies Default MA 18 - mac_control : Specifies Default MAC control register content
18 for the specific pla 19 for the specific platform
19 - slaves : Specifies number for 20 - slaves : Specifies number for slaves
20 - active_slave : Specifies the slave 21 - active_slave : Specifies the slave to use for time stamping,
21 ethtool and SIOCGMII 22 ethtool and SIOCGMIIPHY
22 - cpsw-phy-sel : Specifies the phandl <<
23 device. See also cps <<
24 Note that in legacy <<
25 a child device inste <<
26 (DEPRECATED, use phy <<
27 23
28 Optional properties: 24 Optional properties:
29 - ti,hwmods : Must be "cpgmac0" 25 - ti,hwmods : Must be "cpgmac0"
30 - dual_emac : Specifies Switch to 26 - dual_emac : Specifies Switch to act as Dual EMAC
31 - syscon : Phandle to the syste 27 - syscon : Phandle to the system control device node, which is
32 the control module d 28 the control module device of the am33x
33 - mode-gpios : Should be added if o 29 - mode-gpios : Should be added if one/multiple gpio lines are
34 required to be drive 30 required to be driven so that cpsw data lines
35 can be connected to 31 can be connected to the phy via selective mux.
36 For example in dra72 32 For example in dra72x-evm, pcf gpio has to be
37 driven low so that c 33 driven low so that cpsw slave 0 and phy data
38 lines are connected 34 lines are connected via mux.
39 - cpts_clock_mult : Numerator to convert 35 - cpts_clock_mult : Numerator to convert input clock ticks into nanoseconds
40 - cpts_clock_shift : Denominator to conve 36 - cpts_clock_shift : Denominator to convert input clock ticks into nanoseconds
41 Mult and shift will 37 Mult and shift will be calculated basing on CPTS
42 rftclk frequency if 38 rftclk frequency if both cpts_clock_shift and
43 cpts_clock_mult prop 39 cpts_clock_mult properties are not provided.
44 40
45 Slave Properties: 41 Slave Properties:
46 Required properties: 42 Required properties:
47 - phy-mode : See ethernet.txt fil 43 - phy-mode : See ethernet.txt file in the same directory
48 - phys : phandle on phy-gmii- <<
49 44
50 Optional properties: 45 Optional properties:
51 - dual_emac_res_vlan : Specifies VID to be 46 - dual_emac_res_vlan : Specifies VID to be used to segregate the ports
>> 47 - mac-address : See ethernet.txt file in the same directory
52 - phy_id : Specifies slave phy 48 - phy_id : Specifies slave phy id (deprecated, use phy-handle)
53 - phy-handle : See ethernet.txt fil 49 - phy-handle : See ethernet.txt file in the same directory
54 50
55 The MAC address will be determined using the o <<
56 defined in ethernet.txt. <<
57 <<
58 Slave sub-nodes: 51 Slave sub-nodes:
59 - fixed-link : See fixed-link.txt f 52 - fixed-link : See fixed-link.txt file in the same directory
60 53
61 Note: Exactly one of phy_id, phy-handle, or fi 54 Note: Exactly one of phy_id, phy-handle, or fixed-link must be specified.
62 55
63 Note: "ti,hwmods" field is used to fetch the b 56 Note: "ti,hwmods" field is used to fetch the base address and irq
64 resources from TI, omap hwmod data base during 57 resources from TI, omap hwmod data base during device registration.
65 Future plan is to migrate hwmod data base cont 58 Future plan is to migrate hwmod data base contents into device tree
66 blob so that, all the required data will be us 59 blob so that, all the required data will be used from device tree dts
67 file. 60 file.
68 61
69 Examples: 62 Examples:
70 63
71 mac: ethernet@4a100000 { 64 mac: ethernet@4a100000 {
72 compatible = "ti,cpsw"; 65 compatible = "ti,cpsw";
73 reg = <0x4A100000 0x1000>; 66 reg = <0x4A100000 0x1000>;
74 interrupts = <55 0x4>; 67 interrupts = <55 0x4>;
75 interrupt-parent = <&intc>; 68 interrupt-parent = <&intc>;
76 cpdma_channels = <8>; 69 cpdma_channels = <8>;
77 ale_entries = <1024>; 70 ale_entries = <1024>;
78 bd_ram_size = <0x2000>; 71 bd_ram_size = <0x2000>;
79 rx_descs = <64>; 72 rx_descs = <64>;
80 mac_control = <0x20>; 73 mac_control = <0x20>;
81 slaves = <2>; 74 slaves = <2>;
82 active_slave = <0>; 75 active_slave = <0>;
83 cpts_clock_mult = <0x80000000> 76 cpts_clock_mult = <0x80000000>;
84 cpts_clock_shift = <29>; 77 cpts_clock_shift = <29>;
85 syscon = <&cm>; 78 syscon = <&cm>;
86 cpsw-phy-sel = <&phy_sel>; <<
87 cpsw_emac0: slave@0 { 79 cpsw_emac0: slave@0 {
88 phy_id = <&davinci_mdi 80 phy_id = <&davinci_mdio>, <0>;
89 phy-mode = "rgmii-txid 81 phy-mode = "rgmii-txid";
90 /* Filled in by U-Boot 82 /* Filled in by U-Boot */
91 mac-address = [ 00 00 83 mac-address = [ 00 00 00 00 00 00 ];
92 phys = <&phy_gmii_sel <<
93 }; 84 };
94 cpsw_emac1: slave@1 { 85 cpsw_emac1: slave@1 {
95 phy_id = <&davinci_mdi 86 phy_id = <&davinci_mdio>, <1>;
96 phy-mode = "rgmii-txid 87 phy-mode = "rgmii-txid";
97 /* Filled in by U-Boot 88 /* Filled in by U-Boot */
98 mac-address = [ 00 00 89 mac-address = [ 00 00 00 00 00 00 ];
99 phys = <&phy_gmii_sel <<
100 }; 90 };
101 }; 91 };
102 92
103 (or) 93 (or)
104 mac: ethernet@4a100000 { 94 mac: ethernet@4a100000 {
105 compatible = "ti,cpsw"; 95 compatible = "ti,cpsw";
106 ti,hwmods = "cpgmac0"; 96 ti,hwmods = "cpgmac0";
107 cpdma_channels = <8>; 97 cpdma_channels = <8>;
108 ale_entries = <1024>; 98 ale_entries = <1024>;
109 bd_ram_size = <0x2000>; 99 bd_ram_size = <0x2000>;
110 rx_descs = <64>; 100 rx_descs = <64>;
111 mac_control = <0x20>; 101 mac_control = <0x20>;
112 slaves = <2>; 102 slaves = <2>;
113 active_slave = <0>; 103 active_slave = <0>;
114 cpts_clock_mult = <0x80000000> 104 cpts_clock_mult = <0x80000000>;
115 cpts_clock_shift = <29>; 105 cpts_clock_shift = <29>;
116 syscon = <&cm>; 106 syscon = <&cm>;
117 cpsw-phy-sel = <&phy_sel>; <<
118 cpsw_emac0: slave@0 { 107 cpsw_emac0: slave@0 {
119 phy_id = <&davinci_mdi 108 phy_id = <&davinci_mdio>, <0>;
120 phy-mode = "rgmii-txid 109 phy-mode = "rgmii-txid";
121 /* Filled in by U-Boot 110 /* Filled in by U-Boot */
122 mac-address = [ 00 00 111 mac-address = [ 00 00 00 00 00 00 ];
123 phys = <&phy_gmii_sel <<
124 }; 112 };
125 cpsw_emac1: slave@1 { 113 cpsw_emac1: slave@1 {
126 phy_id = <&davinci_mdi 114 phy_id = <&davinci_mdio>, <1>;
127 phy-mode = "rgmii-txid 115 phy-mode = "rgmii-txid";
128 /* Filled in by U-Boot 116 /* Filled in by U-Boot */
129 mac-address = [ 00 00 117 mac-address = [ 00 00 00 00 00 00 ];
130 phys = <&phy_gmii_sel <<
131 }; 118 };
132 }; 119 };
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