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Commit 425dd277 authored by Christopher Spinrath's avatar Christopher Spinrath Committed by Shawn Guo
Browse files

ARM: dts: imx6q-utilite-pro: i2c1 is muxed 



It turns out that the i2c1 adapter is connected to a multiplexer
controlled by a gpio line. The first (default) mux option connects
i2c1 to a bus connected to the already known peripherals. The other
one connects the adapter to the ddc pins of the DVI port.

Signed-off-by: default avatarChristopher Spinrath <christopher.spinrath@rwth-aachen.de>
Signed-off-by: default avatarShawn Guo <shawnguo@kernel.org>
parent c4479f6f

arch/arm/boot/dts/imx6q-utilite-pro.dts

+40 −11
Original line number Diff line number Diff line
@@ -71,17 +71,21 @@ 
			gpio-key,wakeup;

		};

	};

};



&hdmi {

	ddc-i2c-bus = <&i2c2>;

	status = "okay";

};



&i2c1 {

	i2cmux {

		compatible = "i2c-mux-gpio";

		pinctrl-names = "default";

	pinctrl-0 = <&pinctrl_i2c1>;

	status = "okay";

		pinctrl-0 = <&pinctrl_i2c1mux>;

		#address-cells = <1>;

		#size-cells = <0>;



		mux-gpios = <&gpio1 2 GPIO_ACTIVE_HIGH>;

		i2c-parent = <&i2c1>;



		i2c@0 {

			reg = <0>;

			#address-cells = <1>;

			#size-cells = <0>;



			eeprom@50 {

				compatible = "at24,24c02";
@@ -95,6 +99,25 @@ 
			};

		};



		i2c_dvi_ddc: i2c@1 {

			reg = <1>;

			#address-cells = <1>;

			#size-cells = <0>;

		};

	};

};



&hdmi {

	ddc-i2c-bus = <&i2c2>;

	status = "okay";

};



&i2c1 {

	pinctrl-names = "default";

	pinctrl-0 = <&pinctrl_i2c1>;

	status = "okay";

};



&i2c2 {

	pinctrl-names = "default";

	pinctrl-0 = <&pinctrl_i2c2>;
@@ -115,6 +138,12 @@ 
		>;

	};



	pinctrl_i2c1mux: i2c1muxgrp {

		fsl,pins = <

			MX6QDL_PAD_GPIO_2__GPIO1_IO02 0x1b0b0

		>;

	};



	pinctrl_i2c2: i2c2grp {

		fsl,pins = <

			MX6QDL_PAD_KEY_COL3__I2C2_SCL 0x4001b8b1