110 lines
3.2 KiB
Plaintext
110 lines
3.2 KiB
Plaintext
Marvell DSA Switch Device Tree Bindings
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---------------------------------------
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WARNING: This binding is currently unstable. Do not program it into a
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FLASH never to be changed again. Once this binding is stable, this
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warning will be removed.
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If you need a stable binding, use the old dsa.txt binding.
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Marvell Switches are MDIO devices. The following properties should be
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placed as a child node of an mdio device.
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The properties described here are those specific to Marvell devices.
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Additional required and optional properties can be found in dsa.txt.
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The compatibility string is used only to find an identification register,
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which is at a different MDIO base address in different switch families.
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- "marvell,mv88e6085" : Switch has base address 0x10. Use with models:
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6085, 6095, 6097, 6123, 6131, 6141, 6161, 6165,
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6171, 6172, 6175, 6176, 6185, 6240, 6320, 6321,
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6341, 6350, 6351, 6352
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- "marvell,mv88e6190" : Switch has base address 0x00. Use with models:
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6163, 6190, 6190X, 6191, 6290, 6390, 6390X
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- "marvell,mv88e6250" : Switch has base address 0x08 or 0x18. Use with model:
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6220, 6250
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Required properties:
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- compatible : Should be one of "marvell,mv88e6085",
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"marvell,mv88e6190" or "marvell,mv88e6250" as
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indicated above
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- reg : Address on the MII bus for the switch.
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Optional properties:
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- reset-gpios : Should be a gpio specifier for a reset line
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- interrupts : Interrupt from the switch
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- interrupt-controller : Indicates the switch is itself an interrupt
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controller. This is used for the PHY interrupts.
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#interrupt-cells = <2> : Controller uses two cells, number and flag
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- eeprom-length : Set to the length of an EEPROM connected to the
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switch. Must be set if the switch can not detect
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the presence and/or size of a connected EEPROM,
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otherwise optional.
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- mdio : Container of PHY and devices on the switches MDIO
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bus.
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- mdio? : Container of PHYs and devices on the external MDIO
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bus. The node must contains a compatible string of
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"marvell,mv88e6xxx-mdio-external"
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Example:
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mdio {
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#address-cells = <1>;
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#size-cells = <0>;
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interrupt-parent = <&gpio0>;
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interrupts = <27 IRQ_TYPE_LEVEL_LOW>;
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interrupt-controller;
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#interrupt-cells = <2>;
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switch0: switch@0 {
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compatible = "marvell,mv88e6085";
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reg = <0>;
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reset-gpios = <&gpio5 1 GPIO_ACTIVE_LOW>;
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mdio {
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#address-cells = <1>;
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#size-cells = <0>;
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switch1phy0: switch1phy0@0 {
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reg = <0>;
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interrupt-parent = <&switch0>;
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interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
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};
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};
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};
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};
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mdio {
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#address-cells = <1>;
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#size-cells = <0>;
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interrupt-parent = <&gpio0>;
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interrupts = <27 IRQ_TYPE_LEVEL_LOW>;
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interrupt-controller;
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#interrupt-cells = <2>;
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switch0: switch@0 {
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compatible = "marvell,mv88e6190";
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reg = <0>;
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reset-gpios = <&gpio5 1 GPIO_ACTIVE_LOW>;
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mdio {
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#address-cells = <1>;
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#size-cells = <0>;
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switch1phy0: switch1phy0@0 {
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reg = <0>;
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interrupt-parent = <&switch0>;
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interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
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};
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};
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mdio1 {
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compatible = "marvell,mv88e6xxx-mdio-external";
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#address-cells = <1>;
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#size-cells = <0>;
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switch1phy9: switch1phy0@9 {
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reg = <9>;
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};
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};
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};
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};
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