linux-kernel - [PATCH v5 1/3] arm64: tegra: tegra210: Add actmon

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Message-Id: <20251021-t210-actmon-p4-v5-1-4a4dbc49fbc8@gmail.com>
Date: Tue, 21 Oct 2025 22:13:22 -0500
From: Aaron Kling via B4 Relay <devnull+webgeek1234.gmail.com@...nel.org>
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>
Cc: devicetree@...r.kernel.org, linux-tegra@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Aaron Kling <webgeek1234@...il.com>
Subject: [PATCH v5 1/3] arm64: tegra: tegra210: Add actmon

From: Aaron Kling <webgeek1234@...il.com>

This enables the action monitor to facilitate dynamic frequency scaling.

Signed-off-by: Aaron Kling <webgeek1234@...il.com>
---
 arch/arm64/boot/dts/nvidia/tegra210.dtsi | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/arm64/boot/dts/nvidia/tegra210.dtsi b/arch/arm64/boot/dts/nvidia/tegra210.dtsi
index 402b0ede1472af625d9d9e811f5af306d436cc98..6da10db893add44a98fde1666c382511212fd43c 100644
--- a/arch/arm64/boot/dts/nvidia/tegra210.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra210.dtsi
@@ -485,6 +485,18 @@ flow-controller@...07000 {
 		reg = <0x0 0x60007000 0x0 0x1000>;
 	};
 
+	actmon@...0c800 {
+		compatible = "nvidia,tegra210-actmon", "nvidia,tegra124-actmon";
+		reg = <0x0 0x6000c800 0x0 0x400>;
+		interrupts = <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&tegra_car TEGRA210_CLK_ACTMON>,
+			 <&tegra_car TEGRA210_CLK_EMC>;
+		clock-names = "actmon", "emc";
+		resets = <&tegra_car 119>;
+		reset-names = "actmon";
+		#cooling-cells = <2>;
+	};
+
 	gpio: gpio@...0d000 {
 		compatible = "nvidia,tegra210-gpio", "nvidia,tegra30-gpio";
 		reg = <0x0 0x6000d000 0x0 0x1000>;

-- 
2.51.0