1TI SoC Ethernet Switch Controller Device Tree Bindings 2------------------------------------------------------ 3 4Required properties: 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 11 registers map 12- interrupts : property with a value describing the interrupt 13 number 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- rx_descs : Specifies number of Rx descriptors 19- mac_control : Specifies Default MAC control register content 20 for the specific platform 21- slaves : Specifies number for slaves 22- active_slave : Specifies the slave to use for time stamping, 23 ethtool and SIOCGMIIPHY 24- cpts_clock_mult : Numerator to convert input clock ticks into nanoseconds 25- cpts_clock_shift : Denominator to convert input clock ticks into nanoseconds 26 27Optional properties: 28- ti,hwmods : Must be "cpgmac0" 29- no_bd_ram : Must be 0 or 1 30- dual_emac : Specifies Switch to act as Dual EMAC 31- syscon : Phandle to the system control device node, which is 32 the control module device of the am33x 33 34Slave Properties: 35Required properties: 36- phy_id : Specifies slave phy id 37- phy-mode : See ethernet.txt file in the same directory 38 39Optional properties: 40- dual_emac_res_vlan : Specifies VID to be used to segregate the ports 41- mac-address : See ethernet.txt file in the same directory 42- phy-handle : See ethernet.txt file in the same directory 43 44Note: "ti,hwmods" field is used to fetch the base address and irq 45resources from TI, omap hwmod data base during device registration. 46Future plan is to migrate hwmod data base contents into device tree 47blob so that, all the required data will be used from device tree dts 48file. 49 50Examples: 51 52 mac: ethernet@4A100000 { 53 compatible = "ti,cpsw"; 54 reg = <0x4A100000 0x1000>; 55 interrupts = <55 0x4>; 56 interrupt-parent = <&intc>; 57 cpdma_channels = <8>; 58 ale_entries = <1024>; 59 bd_ram_size = <0x2000>; 60 no_bd_ram = <0>; 61 rx_descs = <64>; 62 mac_control = <0x20>; 63 slaves = <2>; 64 active_slave = <0>; 65 cpts_clock_mult = <0x80000000>; 66 cpts_clock_shift = <29>; 67 syscon = <&cm>; 68 cpsw_emac0: slave@0 { 69 phy_id = <&davinci_mdio>, <0>; 70 phy-mode = "rgmii-txid"; 71 /* Filled in by U-Boot */ 72 mac-address = [ 00 00 00 00 00 00 ]; 73 }; 74 cpsw_emac1: slave@1 { 75 phy_id = <&davinci_mdio>, <1>; 76 phy-mode = "rgmii-txid"; 77 /* Filled in by U-Boot */ 78 mac-address = [ 00 00 00 00 00 00 ]; 79 }; 80 }; 81 82(or) 83 mac: ethernet@4A100000 { 84 compatible = "ti,cpsw"; 85 ti,hwmods = "cpgmac0"; 86 cpdma_channels = <8>; 87 ale_entries = <1024>; 88 bd_ram_size = <0x2000>; 89 no_bd_ram = <0>; 90 rx_descs = <64>; 91 mac_control = <0x20>; 92 slaves = <2>; 93 active_slave = <0>; 94 cpts_clock_mult = <0x80000000>; 95 cpts_clock_shift = <29>; 96 syscon = <&cm>; 97 cpsw_emac0: slave@0 { 98 phy_id = <&davinci_mdio>, <0>; 99 phy-mode = "rgmii-txid"; 100 /* Filled in by U-Boot */ 101 mac-address = [ 00 00 00 00 00 00 ]; 102 }; 103 cpsw_emac1: slave@1 { 104 phy_id = <&davinci_mdio>, <1>; 105 phy-mode = "rgmii-txid"; 106 /* Filled in by U-Boot */ 107 mac-address = [ 00 00 00 00 00 00 ]; 108 }; 109 }; 110