| 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 |
| - cpts_active_slave : Specifies the slave to use for time stamping |
| - cpts_clock_mult : Numerator to convert input clock ticks into nanoseconds |
| - cpts_clock_shift : Denominator to convert input clock ticks into nanoseconds |
| - phy_id : Specifies slave phy id |
| - mac-address : Specifies slave MAC address |
| |
| Optional properties: |
| - ti,hwmods : Must be "cpgmac0" |
| - no_bd_ram : Must be 0 or 1 |
| - dual_emac : Specifies Switch to act as Dual EMAC |
| - 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>; |
| cpts_active_slave = <0>; |
| cpts_clock_mult = <0x80000000>; |
| cpts_clock_shift = <29>; |
| cpsw_emac0: slave@0 { |
| phy_id = <&davinci_mdio>, <0>; |
| /* Filled in by U-Boot */ |
| mac-address = [ 00 00 00 00 00 00 ]; |
| }; |
| cpsw_emac1: slave@1 { |
| phy_id = <&davinci_mdio>, <1>; |
| /* 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>; |
| cpts_active_slave = <0>; |
| cpts_clock_mult = <0x80000000>; |
| cpts_clock_shift = <29>; |
| cpsw_emac0: slave@0 { |
| phy_id = <&davinci_mdio>, <0>; |
| /* Filled in by U-Boot */ |
| mac-address = [ 00 00 00 00 00 00 ]; |
| }; |
| cpsw_emac1: slave@1 { |
| phy_id = <&davinci_mdio>, <1>; |
| /* Filled in by U-Boot */ |
| mac-address = [ 00 00 00 00 00 00 ]; |
| }; |
| }; |
