linux/Documentation/devicetree/bindings/net/cpsw.txt
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   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- active_slave          : Specifies the slave to use for time stamping,
  19                          ethtool and SIOCGMIIPHY
  20- cpts_clock_mult       : Numerator to convert input clock ticks into nanoseconds
  21- cpts_clock_shift      : Denominator to convert input clock ticks into nanoseconds
  22
  23Optional properties:
  24- ti,hwmods             : Must be "cpgmac0"
  25- no_bd_ram             : Must be 0 or 1
  26- dual_emac             : Specifies Switch to act as Dual EMAC
  27
  28Slave Properties:
  29Required properties:
  30- phy_id                : Specifies slave phy id
  31- mac-address           : Specifies slave MAC address
  32
  33Optional properties:
  34- dual_emac_res_vlan    : Specifies VID to be used to segregate the ports
  35
  36Note: "ti,hwmods" field is used to fetch the base address and irq
  37resources from TI, omap hwmod data base during device registration.
  38Future plan is to migrate hwmod data base contents into device tree
  39blob so that, all the required data will be used from device tree dts
  40file.
  41
  42Examples:
  43
  44        mac: ethernet@4A100000 {
  45                compatible = "ti,cpsw";
  46                reg = <0x4A100000 0x1000>;
  47                interrupts = <55 0x4>;
  48                interrupt-parent = <&intc>;
  49                cpdma_channels = <8>;
  50                ale_entries = <1024>;
  51                bd_ram_size = <0x2000>;
  52                no_bd_ram = <0>;
  53                rx_descs = <64>;
  54                mac_control = <0x20>;
  55                slaves = <2>;
  56                active_slave = <0>;
  57                cpts_clock_mult = <0x80000000>;
  58                cpts_clock_shift = <29>;
  59                cpsw_emac0: slave@0 {
  60                        phy_id = <&davinci_mdio>, <0>;
  61                        /* Filled in by U-Boot */
  62                        mac-address = [ 00 00 00 00 00 00 ];
  63                };
  64                cpsw_emac1: slave@1 {
  65                        phy_id = <&davinci_mdio>, <1>;
  66                        /* Filled in by U-Boot */
  67                        mac-address = [ 00 00 00 00 00 00 ];
  68                };
  69        };
  70
  71(or)
  72        mac: ethernet@4A100000 {
  73                compatible = "ti,cpsw";
  74                ti,hwmods = "cpgmac0";
  75                cpdma_channels = <8>;
  76                ale_entries = <1024>;
  77                bd_ram_size = <0x2000>;
  78                no_bd_ram = <0>;
  79                rx_descs = <64>;
  80                mac_control = <0x20>;
  81                slaves = <2>;
  82                active_slave = <0>;
  83                cpts_clock_mult = <0x80000000>;
  84                cpts_clock_shift = <29>;
  85                cpsw_emac0: slave@0 {
  86                        phy_id = <&davinci_mdio>, <0>;
  87                        /* Filled in by U-Boot */
  88                        mac-address = [ 00 00 00 00 00 00 ];
  89                };
  90                cpsw_emac1: slave@1 {
  91                        phy_id = <&davinci_mdio>, <1>;
  92                        /* Filled in by U-Boot */
  93                        mac-address = [ 00 00 00 00 00 00 ];
  94                };
  95        };
  96