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 - 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
25 - ti,hwmods : Must be "cpgmac0"
26 - dual_emac : Specifies Switch to act as Dual EMAC
27 - syscon : Phandle to the system control device node, which is
28 the control module device of the am33x
29 - mode-gpios : Should be added if one/multiple gpio lines are
30 required to be driven so that cpsw data lines
31 can be connected to the phy via selective mux.
32 For example in dra72x-evm, pcf gpio has to be
33 driven low so that cpsw slave 0 and phy data
34 lines are connected via mux.
35 - cpts_clock_mult : Numerator to convert input clock ticks into nanoseconds
36 - cpts_clock_shift : Denominator to convert input clock ticks into nanoseconds
37 Mult and shift will be calculated basing on CPTS
38 rftclk frequency if both cpts_clock_shift and
39 cpts_clock_mult properties are not provided.
43 - phy-mode : See ethernet.txt file in the same directory
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
48 - phy_id : Specifies slave phy id (deprecated, use phy-handle)
49 - phy-handle : See ethernet.txt file in the same directory
52 - fixed-link : See fixed-link.txt file in the same directory
54 Note: Exactly one of phy_id, phy-handle, or fixed-link must be specified.
56 Note: "ti,hwmods" field is used to fetch the base address and irq
57 resources from TI, omap hwmod data base during device registration.
58 Future plan is to migrate hwmod data base contents into device tree
59 blob so that, all the required data will be used from device tree dts
64 mac: ethernet@4a100000 {
65 compatible = "ti,cpsw";
66 reg = <0x4A100000 0x1000>;
67 interrupts = <55 0x4>;
68 interrupt-parent = <&intc>;
71 bd_ram_size = <0x2000>;
76 cpts_clock_mult = <0x80000000>;
77 cpts_clock_shift = <29>;
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 ];
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 ];
94 mac: ethernet@4a100000 {
95 compatible = "ti,cpsw";
96 ti,hwmods = "cpgmac0";
99 bd_ram_size = <0x2000>;
101 mac_control = <0x20>;
104 cpts_clock_mult = <0x80000000>;
105 cpts_clock_shift = <29>;
107 cpsw_emac0: slave@0 {
108 phy_id = <&davinci_mdio>, <0>;
109 phy-mode = "rgmii-txid";
110 /* Filled in by U-Boot */
111 mac-address = [ 00 00 00 00 00 00 ];
113 cpsw_emac1: slave@1 {
114 phy_id = <&davinci_mdio>, <1>;
115 phy-mode = "rgmii-txid";
116 /* Filled in by U-Boot */
117 mac-address = [ 00 00 00 00 00 00 ];