| | 1 | TI SoC Ethernet Switch Controller Device Tree Bindings |
| | 2 | ------------------------------------------------------ |
| | 3 | |
| | 4 | Required 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 | |
| | 27 | Optional 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 | - mode-gpios : Should be added if one/multiple gpio lines are |
| | 34 | required to be driven so that cpsw data lines |
| | 35 | can be connected to the phy via selective mux. |
| | 36 | For example in dra72x-evm, pcf gpio has to be |
| | 37 | driven low so that cpsw slave 0 and phy data |
| | 38 | lines are connected via mux. |
| | 39 | |
| | 40 | |
| | 41 | Slave Properties: |
| | 42 | Required properties: |
| | 43 | - phy-mode : See ethernet.txt file in the same directory |
| | 44 | |
| | 45 | Optional properties: |
| | 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 |
| | 50 | |
| | 51 | Slave sub-nodes: |
| | 52 | - fixed-link : See fixed-link.txt file in the same directory |
| | 53 | |
| | 54 | Note: Exactly one of phy_id, phy-handle, or fixed-link must be specified. |
| | 55 | |
| | 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 |
| | 60 | file. |
| | 61 | |
| | 62 | Examples: |
| | 63 | |
| | 64 | mac: ethernet@4A100000 { |
| | 65 | compatible = "ti,cpsw"; |
| | 66 | reg = <0x4A100000 0x1000>; |
| | 67 | interrupts = <55 0x4>; |
| | 68 | interrupt-parent = <&intc>; |
| | 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 | active_slave = <0>; |
| | 77 | cpts_clock_mult = <0x80000000>; |
| | 78 | cpts_clock_shift = <29>; |
| | 79 | syscon = <&cm>; |
| | 80 | cpsw_emac0: slave@0 { |
| | 81 | phy_id = <&davinci_mdio>, <0>; |
| | 82 | phy-mode = "rgmii-txid"; |
| | 83 | /* Filled in by U-Boot */ |
| | 84 | mac-address = [ 00 00 00 00 00 00 ]; |
| | 85 | }; |
| | 86 | cpsw_emac1: slave@1 { |
| | 87 | phy_id = <&davinci_mdio>, <1>; |
| | 88 | phy-mode = "rgmii-txid"; |
| | 89 | /* Filled in by U-Boot */ |
| | 90 | mac-address = [ 00 00 00 00 00 00 ]; |
| | 91 | }; |
| | 92 | }; |
| | 93 | |
| | 94 | (or) |
| | 95 | mac: ethernet@4A100000 { |
| | 96 | compatible = "ti,cpsw"; |
| | 97 | ti,hwmods = "cpgmac0"; |
| | 98 | cpdma_channels = <8>; |
| | 99 | ale_entries = <1024>; |
| | 100 | bd_ram_size = <0x2000>; |
| | 101 | no_bd_ram = <0>; |
| | 102 | rx_descs = <64>; |
| | 103 | mac_control = <0x20>; |
| | 104 | slaves = <2>; |
| | 105 | active_slave = <0>; |
| | 106 | cpts_clock_mult = <0x80000000>; |
| | 107 | cpts_clock_shift = <29>; |
| | 108 | syscon = <&cm>; |
| | 109 | cpsw_emac0: slave@0 { |
| | 110 | phy_id = <&davinci_mdio>, <0>; |
| | 111 | phy-mode = "rgmii-txid"; |
| | 112 | /* Filled in by U-Boot */ |
| | 113 | mac-address = [ 00 00 00 00 00 00 ]; |
| | 114 | }; |
| | 115 | cpsw_emac1: slave@1 { |
| | 116 | phy_id = <&davinci_mdio>, <1>; |
| | 117 | phy-mode = "rgmii-txid"; |
| | 118 | /* Filled in by U-Boot */ |
| | 119 | mac-address = [ 00 00 00 00 00 00 ]; |
| | 120 | }; |
| | 121 | }; |
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