Commit c5b6bdab authored by Andrew Jeffery's avatar Andrew Jeffery Committed by Joel Stanley
Browse files

ARM: dts: rainier: Describe GPIO mux on I2C3 



We have a 4-bus mux whose output is selected by two GPIO inputs. Wire it
up in the devicetree and ensure the output is enabled by hogging the
appropriate line.

Signed-off-by: default avatarAndrew Jeffery <andrew@aj.id.au>
Signed-off-by: default avatarJoel Stanley <joel@jms.id.au>
parent e6873087

arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts

+46 −0
Original line number Diff line number Diff line
@@ -12,6 +12,10 @@ 


	aliases {

		serial4 = &uart5;

		i2c16 = &i2c2mux0;

		i2c17 = &i2c2mux1;

		i2c18 = &i2c2mux2;

		i2c19 = &i2c2mux3;

	};



	chosen {
@@ -68,6 +72,41 @@ 
		};

	};



	i2c2mux: i2cmux {

		compatible = "i2c-mux-gpio";

		#address-cells = <1>;

		#size-cells = <0>;

		status = "okay";



		i2c-parent = <&i2c2>;

		mux-gpios = <&gpio0 ASPEED_GPIO(G, 4) GPIO_ACTIVE_HIGH>,

			    <&gpio0 ASPEED_GPIO(G, 5) GPIO_ACTIVE_HIGH>;

		idle-state = <0>;



		i2c2mux0: i2c@0 {

			#address-cells = <1>;

			#size-cells = <0>;

			reg = <0>;

		};



		i2c2mux1: i2c@1 {

			#address-cells = <1>;

			#size-cells = <0>;

			reg = <1>;

		};



		i2c2mux2: i2c@2 {

			#address-cells = <1>;

			#size-cells = <0>;

			reg = <2>;

		};



		i2c2mux3: i2c@3 {

			#address-cells = <1>;

			#size-cells = <0>;

			reg = <3>;

		};

	};

};



&gpio0 {
@@ -109,6 +148,13 @@ 
		output-high;

		line-name = "mclr_vpp";

	};



	i2c3_mux_oe_n {

		gpio-hog;

		gpios = <ASPEED_GPIO(G, 6) GPIO_ACTIVE_LOW>;

		output-high;

		line-name = "I2C3_MUX_OE_N";

	};

};



&emmc_controller {

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