[PATCH 1/3] arm64: tegra: Add regulator for Jetson AGX Thor thermal sensor

[Jon Hunter <jonathanh@nvidia.com>]

Add the 1.8V regulator that supplies the thermal sensor on the Jetson
AGX Thor module to fix the following warning:

 WARNING KERN lm90 5-004c: supply vcc not found, using dummy regulator

Note that this 1.8V regulator is supplied by a 5.0V regulator that is
located on the carrier board for the Jetson AGX Thor platform.

Fixes: 56bb69f9b003 ("arm64: tegra: Add thermal sensor for Jetson AGX Thor")
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
---
 arch/arm64/boot/dts/nvidia/tegra264-p3834.dtsi                | 9 +++++++++
 arch/arm64/boot/dts/nvidia/tegra264-p4071-0000+p3834-0008.dts | 4 ++++
 arch/arm64/boot/dts/nvidia/tegra264-p4071-0000+p3834.dtsi     | 9 +++++++++
 3 files changed, 22 insertions(+)

diff --git a/arch/arm64/boot/dts/nvidia/tegra264-p3834.dtsi b/arch/arm64/boot/dts/nvidia/tegra264-p3834.dtsi
index f39f33a66cd2..707e2e79efa7 100644
--- a/arch/arm64/boot/dts/nvidia/tegra264-p3834.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra264-p3834.dtsi
@@ -61,10 +61,19 @@ i2c {
 			thermal-sensor@4c {
 				compatible = "ti,tmp451";
 				reg = <0x4c>;
+				vcc-supply = <&vdd_1v8_ao>;
 			};
 		};
 	};
 
+	vdd_1v8_ao: regulator-vdd-1v8-ao {
+		compatible = "regulator-fixed";
+		regulator-name = "VDD_1V8_AO";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-always-on;
+	};
+
 	thermal-zones {
 		cpu-thermal {
 			polling-delay-passive = <40>;
diff --git a/arch/arm64/boot/dts/nvidia/tegra264-p4071-0000+p3834-0008.dts b/arch/arm64/boot/dts/nvidia/tegra264-p4071-0000+p3834-0008.dts
index 3bd4c4cf2871..d598c6925773 100644
--- a/arch/arm64/boot/dts/nvidia/tegra264-p4071-0000+p3834-0008.dts
+++ b/arch/arm64/boot/dts/nvidia/tegra264-p4071-0000+p3834-0008.dts
@@ -20,4 +20,8 @@ pci@8480000 {
 			status = "okay";
 		};
 	};
+
+	regulator-vdd-1v8-ao {
+		vin-supply = <&vdd_5v0_sys>;
+	};
 };
diff --git a/arch/arm64/boot/dts/nvidia/tegra264-p4071-0000+p3834.dtsi b/arch/arm64/boot/dts/nvidia/tegra264-p4071-0000+p3834.dtsi
index 9295f9c81296..0ed2335ea91f 100644
--- a/arch/arm64/boot/dts/nvidia/tegra264-p4071-0000+p3834.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra264-p4071-0000+p3834.dtsi
@@ -64,6 +64,15 @@ key-power {
 		};
 	};
 
+	vdd_5v0_sys: regulator-vdd-5v0-sys {
+		compatible = "regulator-fixed";
+		regulator-name = "VIN_SYS_5V0";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		regulator-always-on;
+		regulator-boot-on;
+	};
+
 	thermal-zones {
 		tj-thermal {
 			trips {

-- 
2.43.0