arm64: dts: imx8-apalis: specify adc reference voltage regulator

This sets in_voltage_scale to calculate the measured voltage from the
raw digital value of the ADC.

Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm64/boot/dts/freescale/imx8-apalis-v1.1.dtsi b/arch/arm64/boot/dts/freescale/imx8-apalis-v1.1.dtsi
index 686fce7443bbdb2d721ba19a306ea9864f5384de..abf6d543380ca34db617ca009ee1e3848e2d1373 100644 (file)
--- a/arch/arm64/boot/dts/freescale/imx8-apalis-v1.1.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8-apalis-v1.1.dtsi
@@ -284,11 +284,13 @@
 &adc0 {
        pinctrl-names = "default";
        pinctrl-0 = <&pinctrl_adc0>;
+       vref-supply = <&reg_vref_1v8>;
 };
 
 &adc1 {
        pinctrl-names = "default";
        pinctrl-0 = <&pinctrl_adc1>;
+       vref-supply = <&reg_vref_1v8>;
 };
 
 &cpu_alert0 {