Commit 090992a9 authored Jul 11, 2017 by Fabrice Gasnier Committed by Alexandre Torgue Jul 27, 2017

ARM: dts: stm32: enable ADC on stm32h743i-eval board



There's a potentiometer connected to ADC1 and ADC2 in0 on
stm32h743i-eval board.
- Add fixed-voltage 'vdda' regulator that supplies 'vref' pin.
  It's used as voltage reference for ADC and/or DAC.
- Enable ADC1 in0 input (arbitrary choice: could be ADC2 as well).
Note: No pinctrl is needed to use in0 dedicated analog input pin
(e.g. ADC12_INP0).

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>

parent 079af0c4

arch/arm/boot/dts/stm32h743i-eval.dts

+18 −0

Original line number	Diff line number	Diff line
		@@ -60,6 +60,24 @@
		aliases {
		serial0 = &usart1;
		};

		vdda: regulator-vdda {
		compatible = "regulator-fixed";
		regulator-name = "vdda";
		regulator-min-microvolt = <3300000>;
		regulator-max-microvolt = <3300000>;
		regulator-always-on;
		};
		};

		&adc_12 {
		vref-supply = <&vdda>;
		status = "okay";
		adc1: adc@0 {
		/* potentiometer */
		st,adc-channels = <0>;
		status = "okay";
		};
		};

		&clk_hse {