linux-kernel - [PATCH 1/3] arm64: tegra: wire up power sensors on Jetson TX1 DevKit

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Message-ID: <20240821185829.20997-2-tmn505@terefe.re>
Date: Wed, 21 Aug 2024 20:58:03 +0200
From: Tomasz Maciej Nowak <tmn505@...efe.re>
To: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Thierry Reding <thierry.reding@...il.com>,
	Jonathan Hunter <jonathanh@...dia.com>,
	Nicolas Chauvet <kwizart@...il.com>,
	Diogo Ivo <diogo.ivo@...nico.ulisboa.pt>
Cc: devicetree@...r.kernel.org,
	linux-tegra@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Tomasz Maciej Nowak <tmn505@...il.com>
Subject: [PATCH 1/3] arm64: tegra: wire up power sensors on Jetson TX1 DevKit

From: Tomasz Maciej Nowak <tmn505@...il.com>

One INA3221 sensor is located on P2180 module and the other two are on
P2597 base board.

Signed-off-by: Tomasz Maciej Nowak <tmn505@...il.com>
---
 .../arm64/boot/dts/nvidia/tegra210-p2180.dtsi | 29 +++++++++++
 .../arm64/boot/dts/nvidia/tegra210-p2597.dtsi | 50 +++++++++++++++++++
 2 files changed, 79 insertions(+)

diff --git a/arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi b/arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi
index 0ae5a44f7d07..f8b20af1fd3d 100644
--- a/arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi
@@ -33,6 +33,35 @@ serial@...06000 {
 		status = "okay";
 	};
 
+	i2c@...0c400 {
+		status = "okay";
+
+		power-sensor@40 {
+			compatible = "ti,ina3221";
+			reg = <0x40>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			input@0 {
+				reg = <0x0>;
+				label = "VDD_IN";
+				shunt-resistor-micro-ohms = <20000>;
+			};
+
+			input@1 {
+				reg = <0x1>;
+				label = "VDD_GPU";
+				shunt-resistor-micro-ohms = <10000>;
+			};
+
+			input@2 {
+				reg = <0x2>;
+				label = "VDD_CPU";
+				shunt-resistor-micro-ohms = <10000>;
+			};
+		};
+	};
+
 	i2c@...0c500 {
 		status = "okay";
 
diff --git a/arch/arm64/boot/dts/nvidia/tegra210-p2597.dtsi b/arch/arm64/boot/dts/nvidia/tegra210-p2597.dtsi
index b4a1108c2dd7..e97f31c1f625 100644
--- a/arch/arm64/boot/dts/nvidia/tegra210-p2597.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra210-p2597.dtsi
@@ -1319,6 +1319,56 @@ i2c@...0c400 {
 		status = "okay";
 		clock-frequency = <100000>;
 
+		power-sensor@42 {
+			compatible = "ti,ina3221";
+			reg = <0x42>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			input@0 {
+				reg = <0x0>;
+				label = "VDD_MUX";
+				shunt-resistor-micro-ohms = <20000>;
+			};
+
+			input@1 {
+				reg = <0x1>;
+				label = "VDD_5V_IO_SYS";
+				shunt-resistor-micro-ohms = <5000>;
+			};
+
+			input@2 {
+				reg = <0x2>;
+				label = "VDD_3V3_SYS";
+				shunt-resistor-micro-ohms = <10000>;
+			};
+		};
+
+		power-sensor@43 {
+			compatible = "ti,ina3221";
+			reg = <0x43>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			input@0 {
+				reg = <0x0>;
+				label = "VDD_3V3_IO";
+				shunt-resistor-micro-ohms = <10000>;
+			};
+
+			input@1 {
+				reg = <0x1>;
+				label = "VDD_1V8_IO";
+				shunt-resistor-micro-ohms = <10000>;
+			};
+
+			input@2 {
+				reg = <0x2>;
+				label = "VDD_M2_IN";
+				shunt-resistor-micro-ohms = <10000>;
+			};
+		};
+
 		exp1: gpio@74 {
 			compatible = "ti,tca9539";
 			reg = <0x74>;
-- 
2.46.0