linux-kernel - [PATCH RFC 6/7] arm64: tegra: Add interconnect properties to Tegra210 device-tree

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Message-Id: <20250828-t210-actmon-v1-6-aeb19ec1f244@gmail.com>
Date: Thu, 28 Aug 2025 23:01:32 -0500
From: Aaron Kling via B4 Relay <devnull+webgeek1234.gmail.com@...nel.org>
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>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 MyungJoo Ham <myungjoo.ham@...sung.com>, 
 Kyungmin Park <kyungmin.park@...sung.com>, 
 Chanwoo Choi <cw00.choi@...sung.com>, Dmitry Osipenko <digetx@...il.com>
Cc: linux-kernel@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-tegra@...r.kernel.org, linux-pm@...r.kernel.org, 
 Aaron Kling <webgeek1234@...il.com>
Subject: [PATCH RFC 6/7] arm64: tegra: Add interconnect properties to
 Tegra210 device-tree

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

Add interconnect properties to the Memory Controller, External Memory
Controller and the Display Controller nodes in order to describe hardware
interconnection.

Signed-off-by: Aaron Kling <webgeek1234@...il.com>
---
 arch/arm64/boot/dts/nvidia/tegra210.dtsi | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/arch/arm64/boot/dts/nvidia/tegra210.dtsi b/arch/arm64/boot/dts/nvidia/tegra210.dtsi
index 6da10db893add44a98fde1666c382511212fd43c..2fcc7a28690f7100d49e8b93c4fb77de7947b002 100644
--- a/arch/arm64/boot/dts/nvidia/tegra210.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra210.dtsi
@@ -202,6 +202,19 @@ dc@...00000 {
 
 			nvidia,outputs = <&dsia &dsib &sor0 &sor1>;
 			nvidia,head = <0>;
+
+			interconnects = <&mc TEGRA210_MC_DISPLAY0A &emc>,
+					<&mc TEGRA210_MC_DISPLAY0B &emc>,
+					<&mc TEGRA210_MC_DISPLAY0C &emc>,
+					<&mc TEGRA210_MC_DISPLAYHC &emc>,
+					<&mc TEGRA210_MC_DISPLAYD &emc>,
+					<&mc TEGRA210_MC_DISPLAYT &emc>;
+			interconnect-names = "wina",
+					     "winb",
+					     "winc",
+					     "cursor",
+					     "wind",
+					     "wint";
 		};
 
 		dc@...40000 {
@@ -217,6 +230,15 @@ dc@...40000 {
 
 			nvidia,outputs = <&dsia &dsib &sor0 &sor1>;
 			nvidia,head = <1>;
+
+			interconnects = <&mc TEGRA210_MC_DISPLAY0AB &emc>,
+					<&mc TEGRA210_MC_DISPLAY0BB &emc>,
+					<&mc TEGRA210_MC_DISPLAY0CB &emc>,
+					<&mc TEGRA210_MC_DISPLAYHCB &emc>;
+			interconnect-names = "wina",
+					     "winb",
+					     "winc",
+					     "cursor";
 		};
 
 		dsia: dsi@...00000 {
@@ -990,6 +1012,7 @@ mc: memory-controller@...19000 {
 
 		#iommu-cells = <1>;
 		#reset-cells = <1>;
+		#interconnect-cells = <1>;
 	};
 
 	emc: external-memory-controller@...1b000 {
@@ -1001,6 +1024,7 @@ emc: external-memory-controller@...1b000 {
 		clock-names = "emc";
 		interrupts = <GIC_SPI 78 IRQ_TYPE_LEVEL_HIGH>;
 		nvidia,memory-controller = <&mc>;
+		#interconnect-cells = <0>;
 		#cooling-cells = <2>;
 	};
 

-- 
2.50.1