122 lines
3.6 KiB
Plaintext
122 lines
3.6 KiB
Plaintext
* Broadcom BCM7xxx Ethernet Controller (GENET)
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Required properties:
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- compatible: should contain one of "brcm,genet-v1", "brcm,genet-v2",
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"brcm,genet-v3", "brcm,genet-v4".
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- reg: address and length of the register set for the device
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- interrupts: must be two cells, the first cell is the general purpose
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interrupt line, while the second cell is the interrupt for the ring
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RX and TX queues operating in ring mode
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- phy-mode: see ethernet.txt file in the same directory
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- #address-cells: should be 1
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- #size-cells: should be 1
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Optional properties:
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- clocks: When provided, must be two phandles to the functional clocks nodes
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of the GENET block. The first phandle is the main GENET clock used during
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normal operation, while the second phandle is the Wake-on-LAN clock.
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- clock-names: When provided, names of the functional clock phandles, first
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name should be "enet" and second should be "enet-wol".
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- phy-handle: See ethernet.txt file in the same directory; used to describe
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configurations where a PHY (internal or external) is used.
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- fixed-link: When the GENET interface is connected to a MoCA hardware block or
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when operating in a RGMII to RGMII type of connection, or when the MDIO bus is
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voluntarily disabled, this property should be used to describe the "fixed link".
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See Documentation/devicetree/bindings/net/fixed-link.txt for information on
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the property specifics
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Required child nodes:
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- mdio bus node: this node should always be present regarless of the PHY
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configuration of the GENET instance
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MDIO bus node required properties:
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- compatible: should contain one of "brcm,genet-mdio-v1", "brcm,genet-mdio-v2"
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"brcm,genet-mdio-v3", "brcm,genet-mdio-v4", the version has to match the
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parent node compatible property (e.g: brcm,genet-v4 pairs with
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brcm,genet-mdio-v4)
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- reg: address and length relative to the parent node base register address
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- #address-cells: address cell for MDIO bus addressing, should be 1
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- #size-cells: size of the cells for MDIO bus addressing, should be 0
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Ethernet PHY node properties:
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See Documentation/devicetree/bindings/net/phy.txt for the list of required and
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optional properties.
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Internal Gigabit PHY example:
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ethernet@f0b60000 {
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phy-mode = "internal";
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phy-handle = <&phy1>;
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mac-address = [ 00 10 18 36 23 1a ];
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compatible = "brcm,genet-v4";
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#address-cells = <0x1>;
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#size-cells = <0x1>;
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reg = <0xf0b60000 0xfc4c>;
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interrupts = <0x0 0x14 0x0>, <0x0 0x15 0x0>;
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mdio@e14 {
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compatible = "brcm,genet-mdio-v4";
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#address-cells = <0x1>;
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#size-cells = <0x0>;
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reg = <0xe14 0x8>;
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phy1: ethernet-phy@1 {
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max-speed = <1000>;
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reg = <0x1>;
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compatible = "brcm,28nm-gphy", "ethernet-phy-ieee802.3-c22";
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};
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};
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};
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MoCA interface / MAC to MAC example:
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ethernet@f0b80000 {
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phy-mode = "moca";
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fixed-link = <1 0 1000 0 0>;
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mac-address = [ 00 10 18 36 24 1a ];
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compatible = "brcm,genet-v4";
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#address-cells = <0x1>;
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#size-cells = <0x1>;
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reg = <0xf0b80000 0xfc4c>;
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interrupts = <0x0 0x16 0x0>, <0x0 0x17 0x0>;
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mdio@e14 {
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compatible = "brcm,genet-mdio-v4";
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#address-cells = <0x1>;
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#size-cells = <0x0>;
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reg = <0xe14 0x8>;
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};
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};
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External MDIO-connected Gigabit PHY/switch:
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ethernet@f0ba0000 {
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phy-mode = "rgmii";
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phy-handle = <&phy0>;
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mac-address = [ 00 10 18 36 26 1a ];
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compatible = "brcm,genet-v4";
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#address-cells = <0x1>;
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#size-cells = <0x1>;
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reg = <0xf0ba0000 0xfc4c>;
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interrupts = <0x0 0x18 0x0>, <0x0 0x19 0x0>;
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mdio@0e14 {
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compatible = "brcm,genet-mdio-v4";
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#address-cells = <0x1>;
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#size-cells = <0x0>;
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reg = <0xe14 0x8>;
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phy0: ethernet-phy@0 {
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max-speed = <1000>;
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reg = <0x0>;
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compatible = "brcm,bcm53125", "ethernet-phy-ieee802.3-c22";
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};
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};
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};
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