[PATCH] ARM64: dts: meson-gxbb-wetek: fix hwmon temperature sensor output

[christianshewitt@gmail.com (Christian Hewitt)]

Add &saradc and supporting vddio_ao18 nodes to fix hwmon temperature
readings on the WeTek Hub and Play2 devices. Without these nodes the
temp is reported as 4294967295 degrees C.

Thanks to Martin Blumenstingl for assisting debug and the winning
guess at what was missing.

Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
---
 arch/arm64/boot/dts/amlogic/meson-gxbb-wetek.dtsi | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-wetek.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxbb-wetek.dtsi
index 70325b2..dd12e02 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb-wetek.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-wetek.dtsi
@@ -59,6 +59,13 @@
 		regulator-max-microvolt = <3300000>;
 	};
 
+	vddio_ao18: regulator-vddio_ao18 {
+		compatible = "regulator-fixed";
+		regulator-name = "VDDIO_AO18";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+	};
+
 	vcc_3v3: regulator-vcc_3v3 {
 		compatible = "regulator-fixed";
 		regulator-name = "VCC_3V3";
@@ -173,6 +180,11 @@
 	clock-names = "clkin0";
 };
 
+&saradc {
+	status = "okay";
+	vref-supply = <&vddio_ao18>;
+};
+
 /* Wireless SDIO Module */
 &sd_emmc_a {
 	status = "okay";
-- 
2.7.4