linux-kernel - [PATCH 3/4] arm64: tegra: p2597: Enable TCA9539 as IRQ controllers

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Message-Id: <20250224-diogo-gpio_exp-v1-3-80fb84ac48c6@tecnico.ulisboa.pt>
Date: Mon, 24 Feb 2025 12:17:38 +0000
From: Diogo Ivo <diogo.ivo@...nico.ulisboa.pt>
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, Diogo Ivo <diogo.ivo@...nico.ulisboa.pt>
Subject: [PATCH 3/4] arm64: tegra: p2597: Enable TCA9539 as IRQ controllers

Fill out the DT nodes enabling both TCA9539 chips as IRQ controllers.

Proper functionality was tested for both instances.

Signed-off-by: Diogo Ivo <diogo.ivo@...nico.ulisboa.pt>
---
 arch/arm64/boot/dts/nvidia/tegra210-p2597.dtsi | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/arch/arm64/boot/dts/nvidia/tegra210-p2597.dtsi b/arch/arm64/boot/dts/nvidia/tegra210-p2597.dtsi
index 38d49d612c0c19181ec63790112f7a73597b8a82..83ed6ac2a8d8f403fb588edce83dc401065c162f 100644
--- a/arch/arm64/boot/dts/nvidia/tegra210-p2597.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra210-p2597.dtsi
@@ -1375,6 +1375,15 @@ exp1: gpio@74 {
 
 			#gpio-cells = <2>;
 			gpio-controller;
+
+			interrupt-parent = <&gpio>;
+			interrupts = <TEGRA_GPIO(L, 1) IRQ_TYPE_EDGE_FALLING>;
+
+			#interrupt-cells = <2>;
+			interrupt-controller;
+
+			pinctrl-names = "default";
+			pinctrl-0 = <&gpio_1v8>;
 		};
 
 		exp2: gpio@77 {
@@ -1383,6 +1392,15 @@ exp2: gpio@77 {
 
 			#gpio-cells = <2>;
 			gpio-controller;
+
+			interrupt-parent = <&gpio>;
+			interrupts = <TEGRA_GPIO(Z, 2) IRQ_TYPE_EDGE_FALLING>;
+
+			#interrupt-cells = <2>;
+			interrupt-controller;
+
+			pinctrl-names = "default";
+			pinctrl-0 = <&gpio_1v8>;
 		};
 	};
 

-- 
2.48.1