55 lines
1.4 KiB
Plaintext
55 lines
1.4 KiB
Plaintext
* Marvell MDIO Ethernet Controller interface
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The Ethernet controllers of the Marvel Kirkwood, Dove, Orion5x,
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MV78xx0, Armada 370, Armada XP, Armada 7k and Armada 8k have an
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identical unit that provides an interface with the MDIO bus.
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Additionally, Armada 7k and Armada 8k has a second unit which
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provides an interface with the xMDIO bus. This driver handles
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these interfaces.
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Required properties:
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- compatible: "marvell,orion-mdio" or "marvell,xmdio"
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- reg: address and length of the MDIO registers. When an interrupt is
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not present, the length is the size of the SMI register (4 bytes)
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otherwise it must be 0x84 bytes to cover the interrupt control
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registers.
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Optional properties:
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- interrupts: interrupt line number for the SMI error/done interrupt
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- clocks: phandle for up to three required clocks for the MDIO instance
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The child nodes of the MDIO driver are the individual PHY devices
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connected to this MDIO bus. They must have a "reg" property given the
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PHY address on the MDIO bus.
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Example at the SoC level without an interrupt property:
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mdio {
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#address-cells = <1>;
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#size-cells = <0>;
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compatible = "marvell,orion-mdio";
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reg = <0xd0072004 0x4>;
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};
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Example with an interrupt property:
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mdio {
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#address-cells = <1>;
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#size-cells = <0>;
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compatible = "marvell,orion-mdio";
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reg = <0xd0072004 0x84>;
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interrupts = <30>;
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};
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And at the board level:
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mdio {
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phy0: ethernet-phy@0 {
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reg = <0>;
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};
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phy1: ethernet-phy@1 {
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reg = <1>;
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};
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}
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