linux-kernel - [PATCH v1 1/9] ARM: tegra: Add ACTMON support on Tegra114

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Message-ID: <20250225143501.68966-2-clamor95@gmail.com>
Date: Tue, 25 Feb 2025 16:34:53 +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 <thierry.reding@...il.com>,
	Jonathan Hunter <jonathanh@...dia.com>,
	Peter De Schrijver <pdeschrijver@...dia.com>,
	Prashant Gaikwad <pgaikwad@...dia.com>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>,
	Svyatoslav Ryhel <clamor95@...il.com>,
	Jonathan Cameron <Jonathan.Cameron@...wei.com>,
	Georgi Djakov <djakov@...nel.org>,
	Dmitry Osipenko <digetx@...il.com>
Cc: linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-tegra@...r.kernel.org,
	linux-clk@...r.kernel.org
Subject: [PATCH v1 1/9] ARM: tegra: Add ACTMON support on Tegra114

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.

Actmon driver has T30 and T124 compatibles, T124 fits for T114 as well.

Signed-off-by: Svyatoslav Ryhel <clamor95@...il.com>
---
 arch/arm/boot/dts/nvidia/tegra114.dtsi | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/arm/boot/dts/nvidia/tegra114.dtsi b/arch/arm/boot/dts/nvidia/tegra114.dtsi
index 86f14e2fd29f..a309999e7988 100644
--- a/arch/arm/boot/dts/nvidia/tegra114.dtsi
+++ b/arch/arm/boot/dts/nvidia/tegra114.dtsi
@@ -246,6 +246,17 @@ ahb: ahb@...0c000 {
 		reg = <0x6000c000 0x150>;
 	};
 
+	actmon: actmon@...0c800 {
+		compatible = "nvidia,tegra114-actmon", "nvidia,tegra124-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";
+	};
+
 	gpio: gpio@...0d000 {
 		compatible = "nvidia,tegra114-gpio", "nvidia,tegra30-gpio";
 		reg = <0x6000d000 0x1000>;
-- 
2.43.0