linux-kernel - [PATCH 3/4] arm64: tegra: Add default GIC address cells on Tegra194

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Message-ID: <20250822133351.312424-7-krzysztof.kozlowski@linaro.org>
Date: Fri, 22 Aug 2025 15:33:54 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
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>,
	devicetree@...r.kernel.org,
	linux-tegra@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH 3/4] arm64: tegra: Add default GIC address cells on Tegra194

Add missing address-cells 0 to GIC interrupt node to silence W=1
warning:

  tegra194.dtsi:2391.4-42: Warning (interrupt_map): /bus@...cie@...00000:interrupt-map:
    Missing property '#address-cells' in node /bus@...nterrupt-controller@...1000, using 0 as fallback

Value '0' is correct because:
1. GIC interrupt controller does not have children,
2. interrupt-map property (in PCI node) consists of five components and
   the fourth component "parent unit address", which size is defined by
   '#address-cells' of the node pointed to by the interrupt-parent
   component, is not used (=0)

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
 arch/arm64/boot/dts/nvidia/tegra194.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
index 1399342f23e1..b782f8db1288 100644
--- a/arch/arm64/boot/dts/nvidia/tegra194.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
@@ -1331,6 +1331,7 @@ fuse@...0000 {
 
 		gic: interrupt-controller@...1000 {
 			compatible = "arm,gic-400";
+			#address-cells = <0>;
 			#interrupt-cells = <3>;
 			interrupt-controller;
 			reg = <0x0 0x03881000 0x0 0x1000>,
-- 
2.48.1