| TI SoC Ethernet Switch Controller Device Tree Bindings | |
| ------------------------------------------------------ | |
| Required properties: | |
| - compatible : Should be "ti,cpsw" | |
| - reg : physical base address and size of the cpsw | |
| registers map | |
| - interrupts : property with a value describing the interrupt | |
| number | |
| - interrupt-parent : The parent interrupt controller | |
| - cpdma_channels : Specifies number of channels in CPDMA | |
| - ale_entries : Specifies No of entries ALE can hold | |
| - bd_ram_size : Specifies internal descriptor RAM size | |
| - rx_descs : Specifies number of Rx descriptors | |
| - mac_control : Specifies Default MAC control register content | |
| for the specific platform | |
| - slaves : Specifies number for slaves | |
| - active_slave : Specifies the slave to use for time stamping, | |
| ethtool and SIOCGMIIPHY | |
| - cpts_clock_mult : Numerator to convert input clock ticks into nanoseconds | |
| - cpts_clock_shift : Denominator to convert input clock ticks into nanoseconds | |
| Optional properties: | |
| - ti,hwmods : Must be "cpgmac0" | |
| - no_bd_ram : Must be 0 or 1 | |
| - dual_emac : Specifies Switch to act as Dual EMAC | |
| Slave Properties: | |
| Required properties: | |
| - phy_id : Specifies slave phy id | |
| - phy-mode : The interface between the SoC and the PHY (a string | |
| that of_get_phy_mode() can understand) | |
| - mac-address : Specifies slave MAC address | |
| Optional properties: | |
| - dual_emac_res_vlan : Specifies VID to be used to segregate the ports | |
| Note: "ti,hwmods" field is used to fetch the base address and irq | |
| resources from TI, omap hwmod data base during device registration. | |
| Future plan is to migrate hwmod data base contents into device tree | |
| blob so that, all the required data will be used from device tree dts | |
| file. | |
| Examples: | |
| mac: ethernet@4A100000 { | |
| compatible = "ti,cpsw"; | |
| reg = <0x4A100000 0x1000>; | |
| interrupts = <55 0x4>; | |
| interrupt-parent = <&intc>; | |
| cpdma_channels = <8>; | |
| ale_entries = <1024>; | |
| bd_ram_size = <0x2000>; | |
| no_bd_ram = <0>; | |
| rx_descs = <64>; | |
| mac_control = <0x20>; | |
| slaves = <2>; | |
| active_slave = <0>; | |
| cpts_clock_mult = <0x80000000>; | |
| cpts_clock_shift = <29>; | |
| cpsw_emac0: slave@0 { | |
| phy_id = <&davinci_mdio>, <0>; | |
| phy-mode = "rgmii-txid"; | |
| /* Filled in by U-Boot */ | |
| mac-address = [ 00 00 00 00 00 00 ]; | |
| }; | |
| cpsw_emac1: slave@1 { | |
| phy_id = <&davinci_mdio>, <1>; | |
| phy-mode = "rgmii-txid"; | |
| /* Filled in by U-Boot */ | |
| mac-address = [ 00 00 00 00 00 00 ]; | |
| }; | |
| }; | |
| (or) | |
| mac: ethernet@4A100000 { | |
| compatible = "ti,cpsw"; | |
| ti,hwmods = "cpgmac0"; | |
| cpdma_channels = <8>; | |
| ale_entries = <1024>; | |
| bd_ram_size = <0x2000>; | |
| no_bd_ram = <0>; | |
| rx_descs = <64>; | |
| mac_control = <0x20>; | |
| slaves = <2>; | |
| active_slave = <0>; | |
| cpts_clock_mult = <0x80000000>; | |
| cpts_clock_shift = <29>; | |
| cpsw_emac0: slave@0 { | |
| phy_id = <&davinci_mdio>, <0>; | |
| phy-mode = "rgmii-txid"; | |
| /* Filled in by U-Boot */ | |
| mac-address = [ 00 00 00 00 00 00 ]; | |
| }; | |
| cpsw_emac1: slave@1 { | |
| phy_id = <&davinci_mdio>, <1>; | |
| phy-mode = "rgmii-txid"; | |
| /* Filled in by U-Boot */ | |
| mac-address = [ 00 00 00 00 00 00 ]; | |
| }; | |
| }; |