linux-kernel - [PATCH v4 02/12] ARM: tegra: Add ACTMON node to Tegra114 device tree

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Message-ID: <20251125120559.158860-3-clamor95@gmail.com>
Date: Tue, 25 Nov 2025 14:05:49 +0200
From: Svyatoslav Ryhel <clamor95@...il.com>
To: Krzysztof Kozlowski <krzk@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Thierry Reding <treding@...dia.com>,
	Thierry Reding <thierry.reding@...il.com>,
	Jonathan Hunter <jonathanh@...dia.com>,
	Prashant Gaikwad <pgaikwad@...dia.com>,
	Mikko Perttunen <mperttunen@...dia.com>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>,
	Dmitry Osipenko <digetx@...il.com>,
	MyungJoo Ham <myungjoo.ham@...sung.com>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Chanwoo Choi <cw00.choi@...sung.com>,
	Svyatoslav Ryhel <clamor95@...il.com>
Cc: linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-tegra@...r.kernel.org,
	linux-clk@...r.kernel.org,
	linux-pm@...r.kernel.org
Subject: [PATCH v4 02/12] ARM: tegra: Add ACTMON node to Tegra114 device tree

Add support for ACTMON on Tegra114. This is used to monitor activity from
different components. Based on the collected statistics, the rate at which
the external memory needs to be clocked can be derived.

Signed-off-by: Svyatoslav Ryhel <clamor95@...il.com>
Reviewed-by: Mikko Perttunen <mperttunen@...dia.com>
---
 arch/arm/boot/dts/nvidia/tegra114.dtsi | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/arm/boot/dts/nvidia/tegra114.dtsi b/arch/arm/boot/dts/nvidia/tegra114.dtsi
index 02d2c40dd79a..ef0618e9eec1 100644
--- a/arch/arm/boot/dts/nvidia/tegra114.dtsi
+++ b/arch/arm/boot/dts/nvidia/tegra114.dtsi
@@ -312,6 +312,18 @@ ahb: ahb@...0c000 {
 		reg = <0x6000c000 0x150>;
 	};
 
+	actmon: actmon@...0c800 {
+		compatible = "nvidia,tegra114-actmon";
+		reg = <0x6000c800 0x400>;
+		interrupts = <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&tegra_car TEGRA114_CLK_ACTMON>,
+			 <&tegra_car TEGRA114_CLK_EMC>;
+		clock-names = "actmon", "emc";
+		resets = <&tegra_car TEGRA114_CLK_ACTMON>;
+		reset-names = "actmon";
+		#cooling-cells = <2>;
+	};
+
 	gpio: gpio@...0d000 {
 		compatible = "nvidia,tegra114-gpio", "nvidia,tegra30-gpio";
 		reg = <0x6000d000 0x1000>;
-- 
2.51.0