Commit acde9078 authored by Chanh Nguyen's avatar Chanh Nguyen Committed by Joel Stanley
Browse files

ARM: dts: aspeed: mtmitchell: Update ADC sensors for Mt.Mitchell DVT systems 



Change to use I2C ADC controller (ltc2497) for Mt.Mitchell DVT and
later hardware.

Signed-off-by: default avatarChanh Nguyen <chanh@os.amperecomputing.com>
Link: https://lore.kernel.org/r/20230620092537.20007-3-chanh@os.amperecomputing.com


Signed-off-by: default avatarJoel Stanley <joel@jms.id.au>
parent d50b1baf

arch/arm/boot/dts/aspeed/aspeed-bmc-ampere-mtmitchell.dts

+66 −41
Original line number Diff line number Diff line
@@ -66,145 +66,161 @@ gpioI5mux: mux-controller { 


	adc0mux: adc0mux {

		compatible = "io-channel-mux";

		io-channels = <&adc0 0>;

		io-channels = <&adc_i2c_0 0>;

		#io-channel-cells = <1>;

		io-channel-names = "parent";

		mux-controls = <&gpioI5mux>;

		settle-time-us = <10000>;

		channels = "s0", "s1";

	};



	adc1mux: adc1mux {

		compatible = "io-channel-mux";

		io-channels = <&adc0 1>;

		io-channels = <&adc_i2c_0 1>;

		#io-channel-cells = <1>;

		io-channel-names = "parent";

		mux-controls = <&gpioI5mux>;

		settle-time-us = <10000>;

		channels = "s0", "s1";

	};



	adc2mux: adc2mux {

		compatible = "io-channel-mux";

		io-channels = <&adc0 2>;

		io-channels = <&adc_i2c_0 2>;

		#io-channel-cells = <1>;

		io-channel-names = "parent";

		mux-controls = <&gpioI5mux>;

		settle-time-us = <10000>;

		channels = "s0", "s1";

	};



	adc3mux: adc3mux {

		compatible = "io-channel-mux";

		io-channels = <&adc0 3>;

		io-channels = <&adc_i2c_0 3>;

		#io-channel-cells = <1>;

		io-channel-names = "parent";

		mux-controls = <&gpioI5mux>;

		settle-time-us = <10000>;

		channels = "s0", "s1";

	};



	adc4mux: adc4mux {

		compatible = "io-channel-mux";

		io-channels = <&adc0 4>;

		io-channels = <&adc_i2c_0 4>;

		#io-channel-cells = <1>;

		io-channel-names = "parent";

		mux-controls = <&gpioI5mux>;

		settle-time-us = <10000>;

		channels = "s0", "s1";

	};



	adc5mux: adc5mux {

		compatible = "io-channel-mux";

		io-channels = <&adc0 5>;

		io-channels = <&adc_i2c_0 5>;

		#io-channel-cells = <1>;

		io-channel-names = "parent";

		mux-controls = <&gpioI5mux>;

		settle-time-us = <10000>;

		channels = "s0", "s1";

	};



	adc6mux: adc6mux {

		compatible = "io-channel-mux";

		io-channels = <&adc0 6>;

		io-channels = <&adc_i2c_0 6>;

		#io-channel-cells = <1>;

		io-channel-names = "parent";

		mux-controls = <&gpioI5mux>;

		settle-time-us = <10000>;

		channels = "s0", "s1";

	};



	adc7mux: adc7mux {

		compatible = "io-channel-mux";

		io-channels = <&adc0 7>;

		io-channels = <&adc_i2c_0 7>;

		#io-channel-cells = <1>;

		io-channel-names = "parent";

		mux-controls = <&gpioI5mux>;

		settle-time-us = <10000>;

		channels = "s0", "s1";

	};



	adc8mux: adc8mux {

		compatible = "io-channel-mux";

		io-channels = <&adc1 0>;

		io-channels = <&adc_i2c_0 8>;

		#io-channel-cells = <1>;

		io-channel-names = "parent";

		mux-controls = <&gpioI5mux>;

		settle-time-us = <10000>;

		channels = "s0", "s1";

	};



	adc9mux: adc9mux {

		compatible = "io-channel-mux";

		io-channels = <&adc1 1>;

		io-channels = <&adc_i2c_0 9>;

		#io-channel-cells = <1>;

		io-channel-names = "parent";

		mux-controls = <&gpioI5mux>;

		settle-time-us = <10000>;

		channels = "s0", "s1";

	};



	adc10mux: adc10mux {

		compatible = "io-channel-mux";

		io-channels = <&adc1 2>;

		io-channels = <&adc_i2c_0 10>;

		#io-channel-cells = <1>;

		io-channel-names = "parent";

		mux-controls = <&gpioI5mux>;

		settle-time-us = <10000>;

		channels = "s0", "s1";

	};



	adc11mux: adc11mux {

		compatible = "io-channel-mux";

		io-channels = <&adc1 3>;

		io-channels = <&adc_i2c_0 11>;

		#io-channel-cells = <1>;

		io-channel-names = "parent";

		mux-controls = <&gpioI5mux>;

		settle-time-us = <10000>;

		channels = "s0", "s1";

	};



	adc12mux: adc12mux {

		compatible = "io-channel-mux";

		io-channels = <&adc1 4>;

		io-channels = <&adc_i2c_0 12>;

		#io-channel-cells = <1>;

		io-channel-names = "parent";

		mux-controls = <&gpioI5mux>;

		settle-time-us = <10000>;

		channels = "s0", "s1";

	};



	adc13mux: adc13mux {

		compatible = "io-channel-mux";

		io-channels = <&adc1 5>;

		io-channels = <&adc_i2c_0 13>;

		#io-channel-cells = <1>;

		io-channel-names = "parent";

		mux-controls = <&gpioI5mux>;

		settle-time-us = <10000>;

		channels = "s0", "s1";

	};



	adc14mux: adc14mux {

		compatible = "io-channel-mux";

		io-channels = <&adc1 6>;

		io-channels = <&adc_i2c_0 14>;

		#io-channel-cells = <1>;

		io-channel-names = "parent";

		mux-controls = <&gpioI5mux>;

		settle-time-us = <10000>;

		channels = "s0", "s1";

	};



	adc15mux: adc15mux {

		compatible = "io-channel-mux";

		io-channels = <&adc1 7>;

		io-channels = <&adc_i2c_0 15>;

		#io-channel-cells = <1>;

		io-channel-names = "parent";

		mux-controls = <&gpioI5mux>;

		settle-time-us = <10000>;

		channels = "s0", "s1";

	};
@@ -226,14 +242,16 @@ iio-hwmon { 
				<&adc13mux 0>, <&adc13mux 1>,

				<&adc14mux 0>, <&adc14mux 1>,

				<&adc15mux 0>, <&adc15mux 1>,

			<&adc_i2c 0>, <&adc_i2c 1>,

			<&adc_i2c 2>, <&adc_i2c 3>,

			<&adc_i2c 4>, <&adc_i2c 5>,

			<&adc_i2c 6>, <&adc_i2c 7>,

			<&adc_i2c 8>, <&adc_i2c 9>,

			<&adc_i2c 10>, <&adc_i2c 11>,

			<&adc_i2c 12>, <&adc_i2c 13>,

			<&adc_i2c 14>, <&adc_i2c 15>;

				<&adc_i2c_1 0>, <&adc_i2c_1 1>,

				<&adc_i2c_1 2>, <&adc_i2c_1 3>,

				<&adc_i2c_1 4>, <&adc_i2c_1 5>,

				<&adc_i2c_1 6>, <&adc_i2c_1 7>,

				<&adc_i2c_1 8>, <&adc_i2c_1 9>,

				<&adc_i2c_1 10>, <&adc_i2c_1 11>,

				<&adc_i2c_1 12>, <&adc_i2c_1 13>,

				<&adc_i2c_1 14>, <&adc_i2c_1 15>,

				<&adc0 0>, <&adc0 1>,

				<&adc0 2>;

	};

};
@@ -354,7 +372,14 @@ &i2c3 { 
&i2c4 {

	status = "okay";



	adc_i2c: adc@16 {

	adc_i2c_0: adc@14 {

		compatible = "lltc,ltc2497";

		reg = <0x14>;

		vref-supply = <&voltage_mon_reg>;

		#io-channel-cells = <1>;

	 };



	adc_i2c_1: adc@16 {

		compatible = "lltc,ltc2497";

		reg = <0x16>;

		vref-supply = <&voltage_mon_reg>;