[PATCH 4/4] arm64: dts: exynos850-e850-96: add soc thermistor node

[Alexey Klimov]

The WinLink E850-96 board has a Murata NCP03WF104 NTC thermistor placed
near the SoC package die and connected to channel 0 of the CMGP ADC.

Enable the ADC node, define a dummy 1.8V regulator supply for ADC, and
add the board-level thermistor node linked to channel 0 of exynos_adc.
Regulator is represented as a dummy one because we lack PMIC support and
should be replaced with a real one when PMIC support will be implemented.

Signed-off-by: Alexey Klimov <alexey.klimov@xxxxxxxxxx>
---
 arch/arm64/boot/dts/exynos/exynos850-e850-96.dts | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/arch/arm64/boot/dts/exynos/exynos850-e850-96.dts b/arch/arm64/boot/dts/exynos/exynos850-e850-96.dts
index afef32ad4ee2..1abae8b9fa49 100644
--- a/arch/arm64/boot/dts/exynos/exynos850-e850-96.dts
+++ b/arch/arm64/boot/dts/exynos/exynos850-e850-96.dts
@@ -126,6 +126,14 @@ reg_dummy: regulator-0 {
 		regulator-name = "dummy_reg";
 	};
 
+	/* TODO: Remove this once PMIC is implemented  */
+	vdd_1v8_dummy: regulator-1v8 {
+		compatible = "regulator-fixed";
+		regulator-name = "vdd_1v8_dummy";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+	};
+
 	reg_usb_host_vbus: regulator-1 {
 		compatible = "regulator-fixed";
 		regulator-name = "usb_host_vbus";
@@ -166,6 +174,20 @@ rtcclk: clock-rtcclk {
 		#clock-cells = <0>;
 		clock-frequency = <32768>;
 	};
+
+	thermistor-soc {
+		compatible = "murata,ncp03wf104";
+		pullup-uv = <1800000>;
+		pullup-ohm = <100000>;
+		pulldown-ohm = <0>;
+		io-channels = <&exynos_adc 0>;
+		#thermal-sensor-cells = <0>;
+	};
+};
+
+&exynos_adc {
+	status = "okay";
+	vdd-supply = <&vdd_1v8_dummy>;
 };
 
 &cmu_hsi {

-- 
2.51.0