Documentation/devicetree/bindings/net/mediatek-net.txt

   1 MediaTek Frame Engine Ethernet controller
   2 =========================================
   3
   4 The frame engine ethernet controller can be found on MediaTek SoCs. These SoCs
   5 have dual GMAC each represented by a child node..
   6
   7 * Ethernet controller node
   8
   9 Required properties:
  10 - compatible: Should be
  11                 "mediatek,mt2701-eth": for MT2701 SoC
  12                 "mediatek,mt7623-eth", "mediatek,mt2701-eth": for MT7623 SoC
  13                 "mediatek,mt7622-eth": for MT7622 SoC
  14 - reg: Address and length of the register set for the device
  15 - interrupts: Should contain the three frame engines interrupts in numeric
  16         order. These are fe_int0, fe_int1 and fe_int2.
  17 - clocks: the clock used by the core
  18 - clock-names: the names of the clock listed in the clocks property. These are
  19         "ethif", "esw", "gp2", "gp1" : For MT2701 and MT7623 SoC
  20         "ethif", "esw", "gp0", "gp1", "gp2", "sgmii_tx250m", "sgmii_rx250m",
  21         "sgmii_cdr_ref", "sgmii_cdr_fb", "sgmii_ck", "eth2pll" : For MT7622 SoC
  22 - power-domains: phandle to the power domain that the ethernet is part of
  23 - resets: Should contain phandles to the ethsys reset signals
  24 - reset-names: Should contain the names of reset signal listed in the resets
  25                 property
  26                 These are "fe", "gmac" and "ppe"
  27 - mediatek,ethsys: phandle to the syscon node that handles the port setup
  28 - mediatek,sgmiisys: phandle to the syscon node that handles the SGMII setup
  29         which is required for those SoCs equipped with SGMII such as MT7622 SoC.
  30 - mediatek,pctl: phandle to the syscon node that handles the ports slew rate
  31         and driver current
  32
  33 Optional properties:
  34 - interrupt-parent: Should be the phandle for the interrupt controller
  35   that services interrupts for this device
  36 * Ethernet MAC node
  37
  38 Required properties:
  39 - compatible: Should be "mediatek,eth-mac"
  40 - reg: The number of the MAC
  41 - phy-handle: see ethernet.txt file in the same directory and
  42         the phy-mode "trgmii" required being provided when reg
  43         is equal to 0 and the MAC uses fixed-link to connect
  44         with internal switch such as MT7530.
  45
  46 Example:
  47
  48 eth: ethernet@1b100000 {
  49         compatible = "mediatek,mt7623-eth";
  50         reg = <0 0x1b100000 0 0x20000>;
  51         clocks = <&topckgen CLK_TOP_ETHIF_SEL>,
  52                  <&ethsys CLK_ETHSYS_ESW>,
  53                  <&ethsys CLK_ETHSYS_GP2>,
  54                  <&ethsys CLK_ETHSYS_GP1>;
  55         clock-names = "ethif", "esw", "gp2", "gp1";
  56         interrupts = <GIC_SPI 200 IRQ_TYPE_LEVEL_LOW
  57                       GIC_SPI 199 IRQ_TYPE_LEVEL_LOW
  58                       GIC_SPI 198 IRQ_TYPE_LEVEL_LOW>;
  59         power-domains = <&scpsys MT2701_POWER_DOMAIN_ETH>;
  60         resets = <&ethsys MT2701_ETHSYS_ETH_RST>;
  61         reset-names = "eth";
  62         mediatek,ethsys = <&ethsys>;
  63         mediatek,pctl = <&syscfg_pctl_a>;
  64         #address-cells = <1>;
  65         #size-cells = <0>;
  66
  67         gmac1: mac@0 {
  68                 compatible = "mediatek,eth-mac";
  69                 reg = <0>;
  70                 phy-handle = <&phy0>;
  71         };
  72
  73         gmac2: mac@1 {
  74                 compatible = "mediatek,eth-mac";
  75                 reg = <1>;
  76                 phy-handle = <&phy1>;
  77         };
  78
  79         mdio-bus {
  80                 phy0: ethernet-phy@0 {
  81                         reg = <0>;
  82                         phy-mode = "rgmii";
  83                 };
  84
  85                 phy1: ethernet-phy@1 {
  86                         reg = <1>;
  87                         phy-mode = "rgmii";
  88                 };
  89         };
  90 };