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ARM: dts: stm32: enable ADC on stm32f429i-eval board 

Enable analog to digital converter on stm32f429i-eval board.
It has on-board potentimeter wired to ADC3 in8 analog pin and
uses fixed regulator to provide reference voltage.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Alexandre TORGUE <alexandre.torgue@st.com>
This commit is contained in:
Fabrice GASNIER 2017-01-09 14:08:32 +01:00 committed by Alexandre TORGUE
parent 3604ef9c81
commit 0bacd39be9
1 changed files with 25 additions and 0 deletions
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25
arch/arm/boot/dts/stm32429i-eval.dts
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@ -70,6 +70,20 @@ soc {
dma-ranges = <0xc0000000 0x0 0x10000000>;
};
regulators {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <0>;
reg_vref: regulator@0 {
compatible = "regulator-fixed";
reg = <0>;
regulator-name = "vref";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
};
};
leds {
compatible = "gpio-leds";
green {
@ -112,6 +126,17 @@ usbotg_hs_phy: usbphy {
};
};
&adc {
pinctrl-names = "default";
pinctrl-0 = <&adc3_in8_pin>;
vref-supply = <&reg_vref>;
status = "okay";
adc3: adc@200 {
st,adc-channels = <8>;
status = "okay";
};
};
&clk_hse {
clock-frequency = <25000000>;
};