1TI SoC Ethernet Switch Controller Device Tree Bindings 2------------------------------------------------------ 3 4Required properties: 5- compatible : Should be "ti,cpsw" 6- reg : physical base address and size of the cpsw 7 registers map 8- interrupts : property with a value describing the interrupt 9 number 10- interrupt-parent : The parent interrupt controller 11- cpdma_channels : Specifies number of channels in CPDMA 12- ale_entries : Specifies No of entries ALE can hold 13- bd_ram_size : Specifies internal descriptor RAM size 14- rx_descs : Specifies number of Rx descriptors 15- mac_control : Specifies Default MAC control register content 16 for the specific platform 17- slaves : Specifies number for slaves 18- cpts_active_slave : Specifies the slave to use for time stamping 19- cpts_clock_mult : Numerator to convert input clock ticks into nanoseconds 20- cpts_clock_shift : Denominator to convert input clock ticks into nanoseconds 21- phy_id : Specifies slave phy id 22- mac-address : Specifies slave MAC address 23 24Optional properties: 25- ti,hwmods : Must be "cpgmac0" 26- no_bd_ram : Must be 0 or 1 27- dual_emac : Specifies Switch to act as Dual EMAC 28- dual_emac_res_vlan : Specifies VID to be used to segregate the ports 29 30Note: "ti,hwmods" field is used to fetch the base address and irq 31resources from TI, omap hwmod data base during device registration. 32Future plan is to migrate hwmod data base contents into device tree 33blob so that, all the required data will be used from device tree dts 34file. 35 36Examples: 37 38 mac: ethernet@4A100000 { 39 compatible = "ti,cpsw"; 40 reg = <0x4A100000 0x1000>; 41 interrupts = <55 0x4>; 42 interrupt-parent = <&intc>; 43 cpdma_channels = <8>; 44 ale_entries = <1024>; 45 bd_ram_size = <0x2000>; 46 no_bd_ram = <0>; 47 rx_descs = <64>; 48 mac_control = <0x20>; 49 slaves = <2>; 50 cpts_active_slave = <0>; 51 cpts_clock_mult = <0x80000000>; 52 cpts_clock_shift = <29>; 53 cpsw_emac0: slave@0 { 54 phy_id = <&davinci_mdio>, <0>; 55 /* Filled in by U-Boot */ 56 mac-address = [ 00 00 00 00 00 00 ]; 57 }; 58 cpsw_emac1: slave@1 { 59 phy_id = <&davinci_mdio>, <1>; 60 /* Filled in by U-Boot */ 61 mac-address = [ 00 00 00 00 00 00 ]; 62 }; 63 }; 64 65(or) 66 mac: ethernet@4A100000 { 67 compatible = "ti,cpsw"; 68 ti,hwmods = "cpgmac0"; 69 cpdma_channels = <8>; 70 ale_entries = <1024>; 71 bd_ram_size = <0x2000>; 72 no_bd_ram = <0>; 73 rx_descs = <64>; 74 mac_control = <0x20>; 75 slaves = <2>; 76 cpts_active_slave = <0>; 77 cpts_clock_mult = <0x80000000>; 78 cpts_clock_shift = <29>; 79 cpsw_emac0: slave@0 { 80 phy_id = <&davinci_mdio>, <0>; 81 /* Filled in by U-Boot */ 82 mac-address = [ 00 00 00 00 00 00 ]; 83 }; 84 cpsw_emac1: slave@1 { 85 phy_id = <&davinci_mdio>, <1>; 86 /* Filled in by U-Boot */ 87 mac-address = [ 00 00 00 00 00 00 ]; 88 }; 89 }; 90