dc30c35be7
The switch can have up to two interrupt controllers. One of these contains the interrupts from the integrated PHYs, so is useful to export. The Marvell PHY driver can then be used in interrupt mode, rather than polling, speeding up PHY handling and reducing load on the MDIO bus. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
55 lines
1.9 KiB
Plaintext
55 lines
1.9 KiB
Plaintext
Marvell DSA Switch Device Tree Bindings
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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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Required properties:
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- compatible : Should be one of "marvell,mv88e6085",
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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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- interrupt-parent : Parent interrupt controller
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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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- mdio : container of PHY and devices on the switches MDIO
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bus
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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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};
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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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