ARM: dts: stm32: DT alignment with kernel v5.4-rc4

Device tree and binding alignment with kernel v5.4-rc4

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
diff --git a/arch/arm/dts/stm32429i-eval.dts b/arch/arm/dts/stm32429i-eval.dts
index bd41ae3..c5afa0c 100644
--- a/arch/arm/dts/stm32429i-eval.dts
+++ b/arch/arm/dts/stm32429i-eval.dts
@@ -40,18 +40,18 @@
 		dma-ranges = <0xc0000000 0x0 0x10000000>;
 	};
 
-	regulators {
-		compatible = "simple-bus";
-		#address-cells = <1>;
-		#size-cells = <0>;
+	vdda: regulator-vdda {
+		compatible = "regulator-fixed";
+		regulator-name = "vdda";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+	};
 
-		reg_vref: regulator@0 {
-			compatible = "regulator-fixed";
-			reg = <0>;
-			regulator-name = "vref";
-			regulator-min-microvolt = <3300000>;
-			regulator-max-microvolt = <3300000>;
-		};
+	vref: regulator-vref {
+		compatible = "regulator-fixed";
+		regulator-name = "vref";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
 	};
 
 	leds {
@@ -116,7 +116,8 @@
 &adc {
 	pinctrl-names = "default";
 	pinctrl-0 = <&adc3_in8_pin>;
-	vref-supply = <&reg_vref>;
+	vdda-supply = <&vdda>;
+	vref-supply = <&vref>;
 	status = "okay";
 	adc3: adc@200 {
 		st,adc-channels = <8>;