I2C-0                                                                  MDIO-1            MDIO-0
   |                                                                      |                 |
   |         |--------------|                                             |                 |
   |         |              +---- I2C-A -----                             |                 |
   +---------+ multiplexor  |                                             |                 |
   |         |              +---- I2C-B -----                             |                 |
   |         |  I2C-0x70    |                                             |                 |
   |         |              +---- I2C-C -----                             |                 |
   |         |              |                                             |                 |
   |         |              +---- I2C-D -----                             |                 |
   |         |              |                                             |                 |
   |         |              +---- I2C-E -----                             |                 |
   |         |              |                                             |                 |
   |         |              +---- I2C-F --------+                         |                 |
   |         |              |                   |                         |                 |
   |         |              +---- I2C-G --+     |                         |                 |
   |         |--------------|             |     |                         |                 |
   |                                      |     |                         |                 |
   |        |------------|          +-----+     |                         |                 |
   |        |            |          |           |                         |                 |
   +--------+  ds1337 RTC|          |           |                         |                 |
   |        | I2C-0x68   |          |     |-----+-----|          |--------+---------|       |
   |        |------------|          |     | GPIO      |          |                  |       |
   |                                |     | Port      +--Pin 3---+  multiplexor     |       |
   |                                |     | Expander  +--Pin 4---+                  |       |
   |                                |     |           |          |  74CBTLV3253     |       |
   |                                |     |I2C-0x38   |          |                  |       |
   |                                |     |           |          |                  |       |
   |                                |     |-----------|          |-+--------------+-|       |
   |                                |                              |              |         |
   |                                |                              |              |         |
   |                           |----+-----|                        M              M         |
   |                           | GPIO     |                        D              D         |
   |                           | Port     |                        I              I         |
   |                           | Expander |                        O              O         |
   |                           |          |                        |              |         |
   |                           |I2C-0x38  |                        W              X         |
   |                           |----------|                        |              |         |
   |                                                               |              |         |
   |                                                               |              |         |
   |                                                          |----+---|     |----+---|     |
   |                                                          |        |     |        |     |
   |                                                          | PHY-11 |     | PHY-21 |     |
   |                                                          | PHY-12 |     | PHY-22 |     |
   |                                                          | PHY-13 |     | PHY-23 |     |
   |                                                          | PHY-14 |     | PHY-24 |     |
   |                                                          |--------|     |--------|     |
   |                                                                                        |
   |         |-------------|                                                                |
   |         | multiplexor |                                                                |
   |         |  I2C-0x77   +----------------------------------------------------------------+
   +---------+   foo       |
   |         |             |
   |         |-+--------+--|
   |           |        |
               |        |
               M        M
               D        D
               I        I
               O        O
               |        |
               Y        Z
               |        |
         |-----+--|  |--+----|
         | PHY-3  |  | PHY-4 |
         |--------|  |-------|







/dts-v1/;
/ {
	model = "cavium,brfl";
	compatible = "cavium,brfl";
	#address-cells = <2>;
	#size-cells = <2>;
	interrupt-parent = <&ciu>;

	soc@0 {
	      .
	      .
	      .
		smi0: mdio@1180000001800 {
			compatible = "cavium,octeon-3860-mdio";
			#address-cells = <1>;
			#size-cells = <0>;
			reg = <0x11800 0x00001800 0x0 0x40>;
		};
		smi1: mdio@1180000001900 {
			compatible = "cavium,octeon-3860-mdio";
			#address-cells = <1>;
			#size-cells = <0>;
			reg = <0x11800 0x00001900 0x0 0x40>;
		};
	      .
	      .
	      .
		twsi0: i2c@1180000001000 {
			#address-cells = <1>;
			#size-cells = <0>;
			compatible = "cavium,octeon-3860-twsi";
			reg = <0x11800 0x00001000 0x0 0x200>;
			interrupts = <0 45>;
			clock-rate = <100000>;
			.
			.
			.
			i2c-mux@70 {
				compatible = "nxp,pca9548";
				reg = <0x38>;

				i2c@6 {
					#address-cells = <1>;
					#size-cells = <0>;
					cell-index = <6>;

					gpio66: gpio@38 {
						compatible = "nxp,pca8574";
						reg = <0x38>;
						#gpio-cells = <2>;
						gpio-controller;
					};
				}
			};
			.
			.
			.
			mdio-mux@77 {
				compatible = "bar,foo";
				reg = <0x77>;
				parent-bus = <&smi0>
				#address-cells = <1>;
				#size-cells = <0>;

				mdio@0 {
					#address-cells = <1>;
					#size-cells = <0>;
					cell-index = <0>;

					phy3: ethernet-phy@1 {
						reg = <1>;
						compatible = "marvell,88e1149r";
						marvell,reg-init = <3 0x10 0 0x5777>,
							<3 0x11 0 0x00aa>,
							<3 0x12 0 0x4105>,
							<3 0x13 0 0x0a60>;
					};
				mdio@1 {
					#address-cells = <1>;
					#size-cells = <0>;
					cell-index = <1>;

					phy4: ethernet-phy@1 {
						reg = <1>;
						compatible = "marvell,88e1149r";
						marvell,reg-init = <3 0x10 0 0x5777>,
							<3 0x11 0 0x00aa>,
							<3 0x12 0 0x4105>,
							<3 0x13 0 0x0a60>;
					};
			};
			.
			.
			.
		};
		mdio-mux@0 {
			compatible = "ti,sn74cbtlv3253"
			gpios = <&gpio66 3 1
				 &gpio66 4 1>
			parent-bus = <&smi1>
			#address-cells = <1>;
			#size-cells = <0>;

			mdio@2 {
				#address-cells = <1>;
				#size-cells = <0>;
				cell-index = <2>;

				phy11: ethernet-phy@1 {
					reg = <1>;
					compatible = "marvell,88e1149r";
					marvell,reg-init = <3 0x10 0 0x5777>,
						<3 0x11 0 0x00aa>,
						<3 0x12 0 0x4105>,
						<3 0x13 0 0x0a60>;
				};
				phy12: ethernet-phy@1 {
					reg = <2>;
					compatible = "marvell,88e1149r";
					marvell,reg-init = <3 0x10 0 0x5777>,
						<3 0x11 0 0x00aa>,
						<3 0x12 0 0x4105>,
						<3 0x13 0 0x0a60>;
				};
				phy13: ethernet-phy@1 {
					reg = <3>;
					compatible = "marvell,88e1149r";
					marvell,reg-init = <3 0x10 0 0x5777>,
						<3 0x11 0 0x00aa>,
						<3 0x12 0 0x4105>,
						<3 0x13 0 0x0a60>;
				};
				phy14: ethernet-phy@1 {
					reg = <4>;
					compatible = "marvell,88e1149r";
					marvell,reg-init = <3 0x10 0 0x5777>,
						<3 0x11 0 0x00aa>,
						<3 0x12 0 0x4105>,
						<3 0x13 0 0x0a60>;
				};
			};
			mdio@3 {
				#address-cells = <1>;
				#size-cells = <0>;
				cell-index = <3>;

				phy21: ethernet-phy@1 {
					reg = <1>;
					compatible = "marvell,88e1149r";
					marvell,reg-init = <3 0x10 0 0x5777>,
						<3 0x11 0 0x00aa>,
						<3 0x12 0 0x4105>,
						<3 0x13 0 0x0a60>;
				};
				phy22: ethernet-phy@1 {
					reg = <2>;
					compatible = "marvell,88e1149r";
					marvell,reg-init = <3 0x10 0 0x5777>,
						<3 0x11 0 0x00aa>,
						<3 0x12 0 0x4105>,
						<3 0x13 0 0x0a60>;
				};
				phy23: ethernet-phy@1 {
					reg = <3>;
					compatible = "marvell,88e1149r";
					marvell,reg-init = <3 0x10 0 0x5777>,
						<3 0x11 0 0x00aa>,
						<3 0x12 0 0x4105>,
						<3 0x13 0 0x0a60>;
				};
				phy24: ethernet-phy@1 {
					reg = <4>;
					compatible = "marvell,88e1149r";
					marvell,reg-init = <3 0x10 0 0x5777>,
						<3 0x11 0 0x00aa>,
						<3 0x12 0 0x4105>,
						<3 0x13 0 0x0a60>;
				};
			};
		};

	      .
	      .
	      .
	};

};