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 >> 18 - rx_descs : Specifies number of Rx descriptors 17 - mac_control : Specifies Default MA 19 - mac_control : Specifies Default MAC control register content 18 for the specific pla 20 for the specific platform 19 - slaves : Specifies number for 21 - slaves : Specifies number for slaves 20 - active_slave : Specifies the slave 22 - active_slave : Specifies the slave to use for time stamping, 21 ethtool and SIOCGMII 23 ethtool and SIOCGMIIPHY 22 - cpsw-phy-sel : Specifies the phandl !! 24 - cpts_clock_mult : Numerator to convert input clock ticks into nanoseconds 23 device. See also cps !! 25 - cpts_clock_shift : Denominator to convert input clock ticks into nanoseconds 24 Note that in legacy << 25 a child device inste << 26 (DEPRECATED, use phy << 27 26 28 Optional properties: 27 Optional properties: 29 - ti,hwmods : Must be "cpgmac0" 28 - ti,hwmods : Must be "cpgmac0" >> 29 - no_bd_ram : Must be 0 or 1 30 - dual_emac : Specifies Switch to 30 - dual_emac : Specifies Switch to act as Dual EMAC 31 - syscon : Phandle to the syste 31 - syscon : Phandle to the system control device node, which is 32 the control module d 32 the control module device of the am33x 33 - mode-gpios : Should be added if o 33 - mode-gpios : Should be added if one/multiple gpio lines are 34 required to be drive 34 required to be driven so that cpsw data lines 35 can be connected to 35 can be connected to the phy via selective mux. 36 For example in dra72 36 For example in dra72x-evm, pcf gpio has to be 37 driven low so that c 37 driven low so that cpsw slave 0 and phy data 38 lines are connected 38 lines are connected via mux. 39 - cpts_clock_mult : Numerator to convert !! 39 40 - cpts_clock_shift : Denominator to conve << 41 Mult and shift will << 42 rftclk frequency if << 43 cpts_clock_mult prop << 44 40 45 Slave Properties: 41 Slave Properties: 46 Required properties: 42 Required properties: 47 - phy-mode : See ethernet.txt fil 43 - phy-mode : See ethernet.txt file in the same directory 48 - phys : phandle on phy-gmii- << 49 44 50 Optional properties: 45 Optional properties: 51 - dual_emac_res_vlan : Specifies VID to be 46 - dual_emac_res_vlan : Specifies VID to be used to segregate the ports 52 - phy_id : Specifies slave phy !! 47 - mac-address : See ethernet.txt file in the same directory >> 48 - phy_id : Specifies slave phy id 53 - phy-handle : See ethernet.txt fil 49 - phy-handle : See ethernet.txt file in the same directory 54 50 55 The MAC address will be determined using the o << 56 defined in ethernet.txt. << 57 << 58 Slave sub-nodes: 51 Slave sub-nodes: 59 - fixed-link : See fixed-link.txt f 52 - fixed-link : See fixed-link.txt file in the same directory 60 !! 53 Either the property phy_id, or the sub-node 61 Note: Exactly one of phy_id, phy-handle, or fi !! 54 fixed-link can be specified 62 55 63 Note: "ti,hwmods" field is used to fetch the b 56 Note: "ti,hwmods" field is used to fetch the base address and irq 64 resources from TI, omap hwmod data base during 57 resources from TI, omap hwmod data base during device registration. 65 Future plan is to migrate hwmod data base cont 58 Future plan is to migrate hwmod data base contents into device tree 66 blob so that, all the required data will be us 59 blob so that, all the required data will be used from device tree dts 67 file. 60 file. 68 61 69 Examples: 62 Examples: 70 63 71 mac: ethernet@4a100000 { !! 64 mac: ethernet@4A100000 { 72 compatible = "ti,cpsw"; 65 compatible = "ti,cpsw"; 73 reg = <0x4A100000 0x1000>; 66 reg = <0x4A100000 0x1000>; 74 interrupts = <55 0x4>; 67 interrupts = <55 0x4>; 75 interrupt-parent = <&intc>; 68 interrupt-parent = <&intc>; 76 cpdma_channels = <8>; 69 cpdma_channels = <8>; 77 ale_entries = <1024>; 70 ale_entries = <1024>; 78 bd_ram_size = <0x2000>; 71 bd_ram_size = <0x2000>; >> 72 no_bd_ram = <0>; 79 rx_descs = <64>; 73 rx_descs = <64>; 80 mac_control = <0x20>; 74 mac_control = <0x20>; 81 slaves = <2>; 75 slaves = <2>; 82 active_slave = <0>; 76 active_slave = <0>; 83 cpts_clock_mult = <0x80000000> 77 cpts_clock_mult = <0x80000000>; 84 cpts_clock_shift = <29>; 78 cpts_clock_shift = <29>; 85 syscon = <&cm>; 79 syscon = <&cm>; 86 cpsw-phy-sel = <&phy_sel>; << 87 cpsw_emac0: slave@0 { 80 cpsw_emac0: slave@0 { 88 phy_id = <&davinci_mdi 81 phy_id = <&davinci_mdio>, <0>; 89 phy-mode = "rgmii-txid 82 phy-mode = "rgmii-txid"; 90 /* Filled in by U-Boot 83 /* Filled in by U-Boot */ 91 mac-address = [ 00 00 84 mac-address = [ 00 00 00 00 00 00 ]; 92 phys = <&phy_gmii_sel << 93 }; 85 }; 94 cpsw_emac1: slave@1 { 86 cpsw_emac1: slave@1 { 95 phy_id = <&davinci_mdi 87 phy_id = <&davinci_mdio>, <1>; 96 phy-mode = "rgmii-txid 88 phy-mode = "rgmii-txid"; 97 /* Filled in by U-Boot 89 /* Filled in by U-Boot */ 98 mac-address = [ 00 00 90 mac-address = [ 00 00 00 00 00 00 ]; 99 phys = <&phy_gmii_sel << 100 }; 91 }; 101 }; 92 }; 102 93 103 (or) 94 (or) 104 mac: ethernet@4a100000 { !! 95 mac: ethernet@4A100000 { 105 compatible = "ti,cpsw"; 96 compatible = "ti,cpsw"; 106 ti,hwmods = "cpgmac0"; 97 ti,hwmods = "cpgmac0"; 107 cpdma_channels = <8>; 98 cpdma_channels = <8>; 108 ale_entries = <1024>; 99 ale_entries = <1024>; 109 bd_ram_size = <0x2000>; 100 bd_ram_size = <0x2000>; >> 101 no_bd_ram = <0>; 110 rx_descs = <64>; 102 rx_descs = <64>; 111 mac_control = <0x20>; 103 mac_control = <0x20>; 112 slaves = <2>; 104 slaves = <2>; 113 active_slave = <0>; 105 active_slave = <0>; 114 cpts_clock_mult = <0x80000000> 106 cpts_clock_mult = <0x80000000>; 115 cpts_clock_shift = <29>; 107 cpts_clock_shift = <29>; 116 syscon = <&cm>; 108 syscon = <&cm>; 117 cpsw-phy-sel = <&phy_sel>; << 118 cpsw_emac0: slave@0 { 109 cpsw_emac0: slave@0 { 119 phy_id = <&davinci_mdi 110 phy_id = <&davinci_mdio>, <0>; 120 phy-mode = "rgmii-txid 111 phy-mode = "rgmii-txid"; 121 /* Filled in by U-Boot 112 /* Filled in by U-Boot */ 122 mac-address = [ 00 00 113 mac-address = [ 00 00 00 00 00 00 ]; 123 phys = <&phy_gmii_sel << 124 }; 114 }; 125 cpsw_emac1: slave@1 { 115 cpsw_emac1: slave@1 { 126 phy_id = <&davinci_mdi 116 phy_id = <&davinci_mdio>, <1>; 127 phy-mode = "rgmii-txid 117 phy-mode = "rgmii-txid"; 128 /* Filled in by U-Boot 118 /* Filled in by U-Boot */ 129 mac-address = [ 00 00 119 mac-address = [ 00 00 00 00 00 00 ]; 130 phys = <&phy_gmii_sel << 131 }; 120 }; 132 }; 121 };
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