linux-kernel - [PATCH v1 2/3] ARM: tegra: lg-x3: add USB and power related nodes

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Message-ID: <20260122152713.8311-3-clamor95@gmail.com>
Date: Thu, 22 Jan 2026 17:27:12 +0200
From: Svyatoslav Ryhel <clamor95@...il.com>
To: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Thierry Reding <thierry.reding@...il.com>,
	Thierry Reding <treding@...dia.com>,
	Jonathan Hunter <jonathanh@...dia.com>,
	Svyatoslav Ryhel <clamor95@...il.com>,
	Jonas Schwöbel <jonasschwoebel@...oo.de>
Cc: devicetree@...r.kernel.org,
	linux-tegra@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v1 2/3] ARM: tegra: lg-x3: add USB and power related nodes

Add missing charger, MUIC, and ADC sensor nodes. Reconfigure USB, set one
of the ADC channels as the fuel gauge temperature sensor, and add a
battery thermal zone.

Signed-off-by: Svyatoslav Ryhel <clamor95@...il.com>
---
 arch/arm/boot/dts/nvidia/tegra30-lg-x3.dtsi | 93 ++++++++++++++++++++-
 1 file changed, 91 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/nvidia/tegra30-lg-x3.dtsi b/arch/arm/boot/dts/nvidia/tegra30-lg-x3.dtsi
index d71d1d6694f8..25c238562b9a 100644
--- a/arch/arm/boot/dts/nvidia/tegra30-lg-x3.dtsi
+++ b/arch/arm/boot/dts/nvidia/tegra30-lg-x3.dtsi
@@ -1070,6 +1070,38 @@ rmi4-f11@11 {
 				syna,clip-y-low = <0>;
 			};
 		};
+
+		max14526: muic@44 {
+			compatible = "maxim,max14526";
+			reg = <0x44>;
+
+			interrupt-parent = <&gpio>;
+			interrupts = <TEGRA_GPIO(J, 0) IRQ_TYPE_EDGE_FALLING>;
+
+			muic_con: connector {
+				compatible = "usb-b-connector";
+				label = "micro-USB";
+				type = "micro";
+			};
+
+			port {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				muic_to_charger: endpoint@0 {
+					reg = <0>;
+					remote-endpoint = <&charger_input>;
+				};
+			};
+		};
+
+		tsc2007: adc@48 {
+			compatible = "ti,tsc2007";
+			reg = <0x48>;
+
+			ti,x-plate-ohms = <1>;
+			#io-channel-cells = <1>;
+		};
 	};
 
 	cam_i2c: i2c@...0c500 {
@@ -1326,6 +1358,22 @@ ldo8 {
 			};
 		};
 
+		max8971: charger@35 {
+			compatible = "maxim,max8971";
+			reg = <0x35>;
+
+			interrupt-parent = <&gpio>;
+			interrupts = <TEGRA_GPIO(J, 2) IRQ_TYPE_LEVEL_LOW>;
+
+			monitored-battery = <&battery>;
+
+			port {
+				charger_input: endpoint {
+					remote-endpoint = <&muic_to_charger>;
+				};
+			};
+		};
+
 		fuel-gauge@36 {
 			compatible = "maxim,max17043";
 			reg = <0x36>;
@@ -1334,6 +1382,10 @@ fuel-gauge@36 {
 			interrupts = <TEGRA_GPIO(S, 0) IRQ_TYPE_EDGE_FALLING>;
 
 			monitored-battery = <&battery>;
+			power-supplies = <&max8971>;
+
+			io-channels = <&tbattery 0>;
+			io-channel-names = "temp";
 
 			maxim,alert-low-soc-level = <10>;
 			wakeup-source;
@@ -1514,12 +1566,13 @@ sdmmc4: mmc@...00600 {
 	usb@...00000 {
 		compatible = "nvidia,tegra30-udc";
 		status = "okay";
-		dr_mode = "peripheral";
+		dr_mode = "otg";
+		extcon = <&max14526>, <&max14526>;
 	};
 
 	usb-phy@...00000 {
 		status = "okay";
-		dr_mode = "peripheral";
+		dr_mode = "otg";
 		nvidia,hssync-start-delay = <0>;
 		nvidia,xcvr-lsfslew = <2>;
 		nvidia,xcvr-lsrslew = <2>;
@@ -1803,7 +1856,43 @@ sound {
 					 <&tegra_car TEGRA30_CLK_EXTERN1>;
 	};
 
+	tbattery: thermal-sensor-battery {
+		compatible = "generic-adc-thermal";
+		#thermal-sensor-cells = <0>;
+
+		io-channels = <&tsc2007 4>;
+		io-channel-names = "sensor-channel";
+		#io-channel-cells = <1>;
+
+		temperature-lookup-table = <
+			(-50000) 4100 (-40000) 3980 (-30000) 3815 (-20000) 3610
+			(-10000) 3285        0 2880    10000 2445    20000 1955
+			   30000 1440    40000 1125    50000  840    60000  665
+			   70000  465    80000  350    90000  230   100000  185 >;
+	};
+
 	thermal-zones {
+		battery-thermal {
+			polling-delay-passive = <0>; /* milliseconds */
+			polling-delay = <20000>; /* milliseconds */
+
+			thermal-sensors = <&tbattery>;
+
+			trips {
+				battery-alert {
+					temperature = <55000>;
+					hysteresis = <2000>;
+					type = "hot";
+				};
+
+				battery-crit {
+					temperature = <60000>;
+					hysteresis = <2000>;
+					type = "critical";
+				};
+			};
+		};
+
 		/*
 		 * NCT72 has two sensors:
 		 *
-- 
2.51.0