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Commit 43185c3b authored by Pankaj Bansal's avatar Pankaj Bansal Committed by David S. Miller
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dt-bindings: net: Add bindings for mdio mux consumers 



When we use the bindings defined in Documentation/devicetree/bindings/mux
to define mdio mux in producer and consumer terms, it results in two
devices. one is mux producer and other is mux consumer.

Add the bindings needed for Mdio mux consumer devices.

Signed-off-by: default avatarPankaj Bansal <pankaj.bansal@nxp.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 24ba1440

Documentation/devicetree/bindings/net/mdio-mux-multiplexer.txt

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Properties for an MDIO bus multiplexer consumer device



This is a special case of MDIO mux  when MDIO mux is defined as a consumer

of a mux producer device. The mux producer can be of any type like mmio mux

producer, gpio mux producer or generic register based mux producer.



Required properties in addition to the MDIO Bus multiplexer properties:



- compatible : should be "mmio-mux-multiplexer"

- mux-controls : mux controller node to use for operating the mux

- mdio-parent-bus : phandle to the parent MDIO bus.



each child node of mdio bus multiplexer consumer device represent a mdio

bus.



for more information please refer

Documentation/devicetree/bindings/mux/mux-controller.txt

and Documentation/devicetree/bindings/net/mdio-mux.txt



Example:

In below example the Mux producer and consumer are separate nodes.



&i2c0 {

	fpga@66 { // fpga connected to i2c

		compatible = "fsl,lx2160aqds-fpga", "fsl,fpga-qixis-i2c",

			     "simple-mfd";

		reg = <0x66>;



		mux: mux-controller { // Mux Producer

			compatible = "reg-mux";

			#mux-control-cells = <1>;

			mux-reg-masks = <0x54 0xf8>, /* 0: reg 0x54, bits 7:3 */

					<0x54 0x07>; /* 1: reg 0x54, bits 2:0 */

		};

	};

};



mdio-mux-1 { // Mux consumer

	compatible = "mdio-mux-multiplexer";

	mux-controls = <&mux 0>;

	mdio-parent-bus = <&emdio1>;

	#address-cells = <1>;

	#size-cells = <0>;



	mdio@0 {

		reg = <0x0>;

		#address-cells = <1>;

		#size-cells = <0>;

	};



	mdio@8 {

		reg = <0x8>;

		#address-cells = <1>;

		#size-cells = <0>;

	};



	..

	..

};



mdio-mux-2 { // Mux consumer

	compatible = "mdio-mux-multiplexer";

	mux-controls = <&mux 1>;

	mdio-parent-bus = <&emdio2>;

	#address-cells = <1>;

	#size-cells = <0>;



	mdio@0 {

		reg = <0x0>;

		#address-cells = <1>;

		#size-cells = <0>;

	};



	mdio@1 {

		reg = <0x1>;

		#address-cells = <1>;

		#size-cells = <0>;

	};



	..

	..

};