Brooklyn/arch/arm/boot/dts/overlays/i2c-mux-overlay.dts

// Umbrella I2C Mux overlay

/dts-v1/;
/plugin/;

/{
	compatible = "brcm,bcm2835";

	fragment@0 {
		target = <&i2c_arm>;
		__dormant__ {
			#address-cells = <1>;
			#size-cells = <0>;
			status = "okay";

			pca9542: mux@70 {
				compatible = "nxp,pca9542";
				reg = <0x70>;
				#address-cells = <1>;
				#size-cells = <0>;

				i2c@0 {
					#address-cells = <1>;
					#size-cells = <0>;
					reg = <0>;
				};
				i2c@1 {
					#address-cells = <1>;
					#size-cells = <0>;
					reg = <1>;
				};
			};
		};
	};

	fragment@1 {
		target = <&i2c_arm>;
		__dormant__ {
			#address-cells = <1>;
			#size-cells = <0>;
			status = "okay";

			pca9545: mux@70 {
				compatible = "nxp,pca9545";
				reg = <0x70>;
				#address-cells = <1>;
				#size-cells = <0>;

				i2c@0 {
					#address-cells = <1>;
					#size-cells = <0>;
					reg = <0>;
				};
				i2c@1 {
					#address-cells = <1>;
					#size-cells = <0>;
					reg = <1>;
				};
				i2c@2 {
					#address-cells = <1>;
					#size-cells = <0>;
					reg = <2>;
				};
				i2c@3 {
					#address-cells = <1>;
					#size-cells = <0>;
					reg = <3>;
				};
			};
		};
	};

	fragment@2 {
		target = <&i2c_arm>;
		__dormant__ {
			#address-cells = <1>;
			#size-cells = <0>;
			status = "okay";

			pca9548: mux@70 {
				compatible = "nxp,pca9548";
				reg = <0x70>;
				#address-cells = <1>;
				#size-cells = <0>;

				i2c@0 {
					#address-cells = <1>;
					#size-cells = <0>;
					reg = <0>;
				};
				i2c@1 {
					#address-cells = <1>;
					#size-cells = <0>;
					reg = <1>;
				};
				i2c@2 {
					#address-cells = <1>;
					#size-cells = <0>;
					reg = <2>;
				};
				i2c@3 {
					#address-cells = <1>;
					#size-cells = <0>;
					reg = <3>;
				};
				i2c@4 {
					#address-cells = <1>;
					#size-cells = <0>;
					reg = <4>;
				};
				i2c@5 {
					#address-cells = <1>;
					#size-cells = <0>;
					reg = <5>;
				};
				i2c@6 {
					#address-cells = <1>;
					#size-cells = <0>;
					reg = <6>;
				};
				i2c@7 {
					#address-cells = <1>;
					#size-cells = <0>;
					reg = <7>;
				};
			};
		};
	};

	__overrides__ {
		pca9542 = <0>, "+0";
		pca9545 = <0>, "+1";
		pca9548 = <0>, "+2";

		addr =  <&pca9542>,"reg:0",
			<&pca9545>,"reg:0",
			<&pca9548>,"reg:0";
	};
};