1 TI SoC Ethernet Switch Controller Device Tree Bindings
2 ------------------------------------------------------
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
12 - interrupts : property with a value describing the interrupt
14 - cpdma_channels : Specifies number of channels in CPDMA
15 - ale_entries : Specifies No of entries ALE can hold
16 - bd_ram_size : Specifies internal descriptor RAM size
17 - mac_control : Specifies Default MAC control register content
18 for the specific platform
19 - slaves : Specifies number for slaves
20 - active_slave : Specifies the slave to use for time stamping,
21 ethtool and SIOCGMIIPHY
24 - ti,hwmods : Must be "cpgmac0"
25 - dual_emac : Specifies Switch to act as Dual EMAC
26 - syscon : Phandle to the system control device node, which is
27 the control module device of the am33x
28 - mode-gpios : Should be added if one/multiple gpio lines are
29 required to be driven so that cpsw data lines
30 can be connected to the phy via selective mux.
31 For example in dra72x-evm, pcf gpio has to be
32 driven low so that cpsw slave 0 and phy data
33 lines are connected via mux.
34 - cpts_clock_mult : Numerator to convert input clock ticks into nanoseconds
35 - cpts_clock_shift : Denominator to convert input clock ticks into nanoseconds
36 Mult and shift will be calculated basing on CPTS
37 rftclk frequency if both cpts_clock_shift and
38 cpts_clock_mult properties are not provided.
42 - phy-mode : See ethernet.txt file in the same directory
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
51 - fixed-link : See fixed-link.txt file in the same directory
53 Note: Exactly one of phy_id, phy-handle, or fixed-link must be specified.
55 Note: "ti,hwmods" field is used to fetch the base address and irq
56 resources from TI, omap hwmod data base during device registration.
57 Future plan is to migrate hwmod data base contents into device tree
58 blob so that, all the required data will be used from device tree dts
63 mac: ethernet@4a100000 {
64 compatible = "ti,cpsw";
65 reg = <0x4A100000 0x1000>;
66 interrupts = <55 0x4>;
67 interrupt-parent = <&intc>;
70 bd_ram_size = <0x2000>;
75 cpts_clock_mult = <0x80000000>;
76 cpts_clock_shift = <29>;
79 phy_id = <&davinci_mdio>, <0>;
80 phy-mode = "rgmii-txid";
81 /* Filled in by U-Boot */
82 mac-address = [ 00 00 00 00 00 00 ];
85 phy_id = <&davinci_mdio>, <1>;
86 phy-mode = "rgmii-txid";
87 /* Filled in by U-Boot */
88 mac-address = [ 00 00 00 00 00 00 ];
93 mac: ethernet@4a100000 {
94 compatible = "ti,cpsw";
95 ti,hwmods = "cpgmac0";
98 bd_ram_size = <0x2000>;
100 mac_control = <0x20>;
103 cpts_clock_mult = <0x80000000>;
104 cpts_clock_shift = <29>;
106 cpsw_emac0: slave@0 {
107 phy_id = <&davinci_mdio>, <0>;
108 phy-mode = "rgmii-txid";
109 /* Filled in by U-Boot */
110 mac-address = [ 00 00 00 00 00 00 ];
112 cpsw_emac1: slave@1 {
113 phy_id = <&davinci_mdio>, <1>;
114 phy-mode = "rgmii-txid";
115 /* Filled in by U-Boot */
116 mac-address = [ 00 00 00 00 00 00 ];