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Commit 8a81ff17 authored by David Lechner's avatar David Lechner Committed by Sekhar Nori
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ARM: da850-lego-ev3: Add device tree node for A/DC 



This adds a node for the TI ADS7957 analog/digital converter on LEGO
MINDSTORMS EV3 as well as a regulator node that is used by the A/DC node.

Signed-off-by: default avatarDavid Lechner <david@lechnology.com>
Signed-off-by: default avatarSekhar Nori <nsekhar@ti.com>
parent c1ae3cfa

arch/arm/boot/dts/da850-lego-ev3.dts

+21 −0
Original line number Diff line number Diff line
@@ -139,6 +139,19 @@ 
		enable-active-high;

		regulator-boot-on;

	};



	/*

	 * This is a simple voltage divider on VCC5V to provide a 2.5V

	 * reference signal to the ADC.

	 */

	adc_ref: regulator2 {

		compatible = "regulator-fixed";

		regulator-name = "adc ref";

		regulator-min-microvolt = <2500000>;

		regulator-max-microvolt = <2500000>;

		regulator-boot-on;

		vin-supply = <&vcc5v>;

	};

};



&pmx_core {
@@ -293,6 +306,14 @@ 
			};

		};

	};



	adc: adc@3 {

		compatible = "ti,ads7957";

		reg = <3>;

		#io-channel-cells = <1>;

		spi-max-frequency = <10000000>;

		vref-supply = <&adc_ref>;

	};

};



&gpio {