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Commit 663148e4 authored by John Crispin's avatar John Crispin Committed by Ralf Baechle
Browse files

Documentation: DT: net: add docs for ralink/mediatek SoC ethernet binding 



Add three files. ralink,rt2880-net.txt  descibes the actual frame engine
and the other two describe the switch forntend bindings.

Signed-off-by: default avatarJohn Crispin <blogic@openwrt.org>
Signed-off-by: default avatarFelix Fietkau <nbd@openwrt.org>
Signed-off-by: default avatarMichael Lee <igvtee@gmail.com>
Cc: devicetree@vger.kernel.org
Cc: David S. Miller <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-mediatek@lists.infradead.org
Cc: John Crispin <blogic@openwrt.org>
Cc: Felix Fietkau <nbd@nbd.name>
Cc: Michael Lee <igvtee@gmail.com>
Cc: steven.liu@mediatek.com
Cc: Fred.Chang@mediatek.com
Patchwork: https://patchwork.linux-mips.org/patch/11970/


Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 3d1f664a

Documentation/devicetree/bindings/net/mediatek,mt7620-gsw.txt

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Mediatek Gigabit Switch

=======================



The mediatek gigabit switch can be found on Mediatek SoCs (mt7620, mt7621).



Required properties:

- compatible: Should be "mediatek,mt7620-gsw" or "mediatek,mt7621-gsw"

- reg: Address and length of the register set for the device

- interrupt-parent: Should be the phandle for the interrupt controller

  that services interrupts for this device

- interrupts: Should contain the gigabit switches interrupt

- resets: Should contain the gigabit switches resets

- reset-names: Should contain the reset names "gsw"



Example:



gsw@10110000 {

	compatible = "ralink,mt7620-gsw";

	reg = <0x10110000 8000>;



	resets = <&rstctrl 23>;

	reset-names = "gsw";



	interrupt-parent = <&intc>;

	interrupts = <17>;

};

Documentation/devicetree/bindings/net/ralink,rt2880-net.txt

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Ralink Frame Engine Ethernet controller

=======================================



The Ralink frame engine ethernet controller can be found on Ralink and

Mediatek SoCs (RT288x, RT3x5x, RT366x, RT388x, rt5350, mt7620, mt7621, mt76x8).



Depending on the SoC, there is a number of ports connected to the CPU port

directly and/or via a (gigabit-)switch.



* Ethernet controller node



Required properties:

- compatible: Should be one of "ralink,rt2880-eth", "ralink,rt3050-eth",

  "ralink,rt3050-eth", "ralink,rt3883-eth", "ralink,rt5350-eth",

  "mediatek,mt7620-eth", "mediatek,mt7621-eth"

- reg: Address and length of the register set for the device

- interrupt-parent: Should be the phandle for the interrupt controller

  that services interrupts for this device

- interrupts: Should contain the frame engines interrupt

- resets: Should contain the frame engines resets

- reset-names: Should contain the reset names "fe". If a switch is present

  "esw" is also required.





* Ethernet port node



Required properties:

- compatible: Should be "ralink,eth-port"

- reg: The number of the physical port

- phy-handle: reference to the node describing the phy



Example:



mdio-bus {

	...

	phy0: ethernet-phy@0 {

		phy-mode = "mii";

		reg = <0>;

	};

};



ethernet@400000 {

	compatible = "ralink,rt2880-eth";

	reg = <0x00400000 10000>;



	#address-cells = <1>;

	#size-cells = <0>;



	resets = <&rstctrl 18>;

	reset-names = "fe";



	interrupt-parent = <&cpuintc>;

	interrupts = <5>;



	port@0 {

		compatible = "ralink,eth-port";

		reg = <0>;

		phy-handle = <&phy0>;

	};



};

Documentation/devicetree/bindings/net/ralink,rt3050-esw.txt

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Ralink Fast Ethernet Embedded Switch

====================================



The ralink fast ethernet embedded switch can be found on Ralink and Mediatek

SoCs (RT3x5x, RT5350, MT76x8).



Required properties:

- compatible: Should be "ralink,rt3050-esw"

- reg: Address and length of the register set for the device

- interrupt-parent: Should be the phandle for the interrupt controller

  that services interrupts for this device

- interrupts: Should contain the embedded switches interrupt

- resets: Should contain the embedded switches resets

- reset-names: Should contain the reset names "esw"



Optional properties:

- ralink,portmap: can be used to choose if the default switch setup is

  llllw or wllll

- ralink,led_polarity: override the active high/low settings of the leds



Example:



esw@10110000 {

	compatible = "ralink,rt3050-esw";

	reg = <0x10110000 8000>;



	resets = <&rstctrl 23>;

	reset-names = "esw";



	interrupt-parent = <&intc>;

	interrupts = <17>;

};