linux-kernel - [PATCH v1 2/5] ARM: tegra: Add External Memory Controller node on Tegra114

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Message-ID: <20260126191536.78829-3-clamor95@gmail.com>
Date: Mon, 26 Jan 2026 21:15:33 +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>,
	Jonathan Hunter <jonathanh@...dia.com>,
	Svyatoslav Ryhel <clamor95@...il.com>,
	Mikko Perttunen <mperttunen@...dia.com>
Cc: devicetree@...r.kernel.org,
	linux-tegra@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v1 2/5] ARM: tegra: Add External Memory Controller node on Tegra114

Add External Memory Controller node to the device-tree.

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 ef0618e9eec1..77ab17f397f6 100644
--- a/arch/arm/boot/dts/nvidia/tegra114.dtsi
+++ b/arch/arm/boot/dts/nvidia/tegra114.dtsi
@@ -259,6 +259,8 @@ tegra_car: clock@...06000 {
 		reg = <0x60006000 0x1000>;
 		#clock-cells = <1>;
 		#reset-cells = <1>;
+
+		nvidia,external-memory-controller = <&emc>;
 	};
 
 	flow-controller@...07000 {
@@ -655,6 +657,16 @@ mc: memory-controller@...19000 {
 		#iommu-cells = <1>;
 	};
 
+	emc: external-memory-controller@...1b000 {
+		compatible = "nvidia,tegra114-emc";
+		reg = <0x7001b000 0x800>;
+		interrupts = <GIC_SPI 78 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&tegra_car TEGRA114_CLK_EMC>;
+		clock-names = "emc";
+
+		nvidia,memory-controller = <&mc>;
+	};
+
 	hda@...30000 {
 		compatible = "nvidia,tegra114-hda", "nvidia,tegra30-hda";
 		reg = <0x70030000 0x10000>;
-- 
2.51.0