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"
>> 26 - no_bd_ram : Must be 0 or 1
30 - dual_emac : Specifies Switch to 27 - dual_emac : Specifies Switch to act as Dual EMAC
31 - syscon : Phandle to the syste 28 - syscon : Phandle to the system control device node, which is
32 the control module d 29 the control module device of the am33x
33 - mode-gpios : Should be added if o 30 - mode-gpios : Should be added if one/multiple gpio lines are
34 required to be drive 31 required to be driven so that cpsw data lines
35 can be connected to 32 can be connected to the phy via selective mux.
36 For example in dra72 33 For example in dra72x-evm, pcf gpio has to be
37 driven low so that c 34 driven low so that cpsw slave 0 and phy data
38 lines are connected 35 lines are connected via mux.
39 - cpts_clock_mult : Numerator to convert 36 - cpts_clock_mult : Numerator to convert input clock ticks into nanoseconds
40 - cpts_clock_shift : Denominator to conve 37 - cpts_clock_shift : Denominator to convert input clock ticks into nanoseconds
41 Mult and shift will 38 Mult and shift will be calculated basing on CPTS
42 rftclk frequency if 39 rftclk frequency if both cpts_clock_shift and
43 cpts_clock_mult prop 40 cpts_clock_mult properties are not provided.
44 41
45 Slave Properties: 42 Slave Properties:
46 Required properties: 43 Required properties:
47 - phy-mode : See ethernet.txt fil 44 - phy-mode : See ethernet.txt file in the same directory
48 - phys : phandle on phy-gmii- <<
49 45
50 Optional properties: 46 Optional properties:
51 - dual_emac_res_vlan : Specifies VID to be 47 - dual_emac_res_vlan : Specifies VID to be used to segregate the ports
>> 48 - mac-address : See ethernet.txt file in the same directory
52 - phy_id : Specifies slave phy 49 - phy_id : Specifies slave phy id (deprecated, use phy-handle)
53 - phy-handle : See ethernet.txt fil 50 - phy-handle : See ethernet.txt file in the same directory
54 51
55 The MAC address will be determined using the o <<
56 defined in ethernet.txt. <<
57 <<
58 Slave sub-nodes: 52 Slave sub-nodes:
59 - fixed-link : See fixed-link.txt f 53 - fixed-link : See fixed-link.txt file in the same directory
60 54
61 Note: Exactly one of phy_id, phy-handle, or fi 55 Note: Exactly one of phy_id, phy-handle, or fixed-link must be specified.
62 56
63 Note: "ti,hwmods" field is used to fetch the b 57 Note: "ti,hwmods" field is used to fetch the base address and irq
64 resources from TI, omap hwmod data base during 58 resources from TI, omap hwmod data base during device registration.
65 Future plan is to migrate hwmod data base cont 59 Future plan is to migrate hwmod data base contents into device tree
66 blob so that, all the required data will be us 60 blob so that, all the required data will be used from device tree dts
67 file. 61 file.
68 62
69 Examples: 63 Examples:
70 64
71 mac: ethernet@4a100000 { !! 65 mac: ethernet@4A100000 {
72 compatible = "ti,cpsw"; 66 compatible = "ti,cpsw";
73 reg = <0x4A100000 0x1000>; 67 reg = <0x4A100000 0x1000>;
74 interrupts = <55 0x4>; 68 interrupts = <55 0x4>;
75 interrupt-parent = <&intc>; 69 interrupt-parent = <&intc>;
76 cpdma_channels = <8>; 70 cpdma_channels = <8>;
77 ale_entries = <1024>; 71 ale_entries = <1024>;
78 bd_ram_size = <0x2000>; 72 bd_ram_size = <0x2000>;
>> 73 no_bd_ram = <0>;
79 rx_descs = <64>; 74 rx_descs = <64>;
80 mac_control = <0x20>; 75 mac_control = <0x20>;
81 slaves = <2>; 76 slaves = <2>;
82 active_slave = <0>; 77 active_slave = <0>;
83 cpts_clock_mult = <0x80000000> 78 cpts_clock_mult = <0x80000000>;
84 cpts_clock_shift = <29>; 79 cpts_clock_shift = <29>;
85 syscon = <&cm>; 80 syscon = <&cm>;
86 cpsw-phy-sel = <&phy_sel>; <<
87 cpsw_emac0: slave@0 { 81 cpsw_emac0: slave@0 {
88 phy_id = <&davinci_mdi 82 phy_id = <&davinci_mdio>, <0>;
89 phy-mode = "rgmii-txid 83 phy-mode = "rgmii-txid";
90 /* Filled in by U-Boot 84 /* Filled in by U-Boot */
91 mac-address = [ 00 00 85 mac-address = [ 00 00 00 00 00 00 ];
92 phys = <&phy_gmii_sel <<
93 }; 86 };
94 cpsw_emac1: slave@1 { 87 cpsw_emac1: slave@1 {
95 phy_id = <&davinci_mdi 88 phy_id = <&davinci_mdio>, <1>;
96 phy-mode = "rgmii-txid 89 phy-mode = "rgmii-txid";
97 /* Filled in by U-Boot 90 /* Filled in by U-Boot */
98 mac-address = [ 00 00 91 mac-address = [ 00 00 00 00 00 00 ];
99 phys = <&phy_gmii_sel <<
100 }; 92 };
101 }; 93 };
102 94
103 (or) 95 (or)
104 mac: ethernet@4a100000 { !! 96 mac: ethernet@4A100000 {
105 compatible = "ti,cpsw"; 97 compatible = "ti,cpsw";
106 ti,hwmods = "cpgmac0"; 98 ti,hwmods = "cpgmac0";
107 cpdma_channels = <8>; 99 cpdma_channels = <8>;
108 ale_entries = <1024>; 100 ale_entries = <1024>;
109 bd_ram_size = <0x2000>; 101 bd_ram_size = <0x2000>;
>> 102 no_bd_ram = <0>;
110 rx_descs = <64>; 103 rx_descs = <64>;
111 mac_control = <0x20>; 104 mac_control = <0x20>;
112 slaves = <2>; 105 slaves = <2>;
113 active_slave = <0>; 106 active_slave = <0>;
114 cpts_clock_mult = <0x80000000> 107 cpts_clock_mult = <0x80000000>;
115 cpts_clock_shift = <29>; 108 cpts_clock_shift = <29>;
116 syscon = <&cm>; 109 syscon = <&cm>;
117 cpsw-phy-sel = <&phy_sel>; <<
118 cpsw_emac0: slave@0 { 110 cpsw_emac0: slave@0 {
119 phy_id = <&davinci_mdi 111 phy_id = <&davinci_mdio>, <0>;
120 phy-mode = "rgmii-txid 112 phy-mode = "rgmii-txid";
121 /* Filled in by U-Boot 113 /* Filled in by U-Boot */
122 mac-address = [ 00 00 114 mac-address = [ 00 00 00 00 00 00 ];
123 phys = <&phy_gmii_sel <<
124 }; 115 };
125 cpsw_emac1: slave@1 { 116 cpsw_emac1: slave@1 {
126 phy_id = <&davinci_mdi 117 phy_id = <&davinci_mdio>, <1>;
127 phy-mode = "rgmii-txid 118 phy-mode = "rgmii-txid";
128 /* Filled in by U-Boot 119 /* Filled in by U-Boot */
129 mac-address = [ 00 00 120 mac-address = [ 00 00 00 00 00 00 ];
130 phys = <&phy_gmii_sel <<
131 }; 121 };
132 }; 122 };
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