91 lines
2.9 KiB
Plaintext
91 lines
2.9 KiB
Plaintext
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MediaTek Frame Engine Ethernet controller
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=========================================
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The frame engine ethernet controller can be found on MediaTek SoCs. These SoCs
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have dual GMAC each represented by a child node..
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* Ethernet controller node
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Required properties:
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- compatible: Should be
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"mediatek,mt2701-eth": for MT2701 SoC
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"mediatek,mt7623-eth", "mediatek,mt2701-eth": for MT7623 SoC
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"mediatek,mt7622-eth": for MT7622 SoC
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- reg: Address and length of the register set for the device
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- interrupts: Should contain the three frame engines interrupts in numeric
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order. These are fe_int0, fe_int1 and fe_int2.
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- clocks: the clock used by the core
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- clock-names: the names of the clock listed in the clocks property. These are
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"ethif", "esw", "gp2", "gp1" : For MT2701 and MT7623 SoC
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"ethif", "esw", "gp0", "gp1", "gp2", "sgmii_tx250m", "sgmii_rx250m",
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"sgmii_cdr_ref", "sgmii_cdr_fb", "sgmii_ck", "eth2pll" : For MT7622 SoC
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- power-domains: phandle to the power domain that the ethernet is part of
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- resets: Should contain phandles to the ethsys reset signals
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- reset-names: Should contain the names of reset signal listed in the resets
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property
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These are "fe", "gmac" and "ppe"
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- mediatek,ethsys: phandle to the syscon node that handles the port setup
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- mediatek,sgmiisys: phandle to the syscon node that handles the SGMII setup
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which is required for those SoCs equipped with SGMII such as MT7622 SoC.
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- mediatek,pctl: phandle to the syscon node that handles the ports slew rate
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and driver current
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Optional properties:
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- interrupt-parent: Should be the phandle for the interrupt controller
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that services interrupts for this device
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* Ethernet MAC node
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Required properties:
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- compatible: Should be "mediatek,eth-mac"
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- reg: The number of the MAC
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- phy-handle: see ethernet.txt file in the same directory and
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the phy-mode "trgmii" required being provided when reg
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is equal to 0 and the MAC uses fixed-link to connect
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with internal switch such as MT7530.
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Example:
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eth: ethernet@1b100000 {
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compatible = "mediatek,mt7623-eth";
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reg = <0 0x1b100000 0 0x20000>;
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clocks = <&topckgen CLK_TOP_ETHIF_SEL>,
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<ðsys CLK_ETHSYS_ESW>,
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<ðsys CLK_ETHSYS_GP2>,
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<ðsys CLK_ETHSYS_GP1>;
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clock-names = "ethif", "esw", "gp2", "gp1";
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interrupts = <GIC_SPI 200 IRQ_TYPE_LEVEL_LOW
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GIC_SPI 199 IRQ_TYPE_LEVEL_LOW
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GIC_SPI 198 IRQ_TYPE_LEVEL_LOW>;
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power-domains = <&scpsys MT2701_POWER_DOMAIN_ETH>;
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resets = <ðsys MT2701_ETHSYS_ETH_RST>;
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reset-names = "eth";
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mediatek,ethsys = <ðsys>;
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mediatek,pctl = <&syscfg_pctl_a>;
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#address-cells = <1>;
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#size-cells = <0>;
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gmac1: mac@0 {
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compatible = "mediatek,eth-mac";
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reg = <0>;
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phy-handle = <&phy0>;
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};
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gmac2: mac@1 {
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compatible = "mediatek,eth-mac";
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reg = <1>;
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phy-handle = <&phy1>;
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};
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mdio-bus {
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phy0: ethernet-phy@0 {
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reg = <0>;
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phy-mode = "rgmii";
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};
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phy1: ethernet-phy@1 {
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reg = <1>;
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phy-mode = "rgmii";
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};
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};
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};
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