linux-kernel - [PATCH 1/2] arm64: dts: amazon: alpine-v2: Add default GIC address cells

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Message-ID: <20250822133423.312621-3-krzysztof.kozlowski@linaro.org>
Date: Fri, 22 Aug 2025 15:34:24 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Antoine Tenart <atenart@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	linux-arm-kernel@...ts.infradead.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH 1/2] arm64: dts: amazon: alpine-v2: Add default GIC address cells

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

  alpine-v2.dtsi:138.4-139.33: Warning (interrupt_map): /soc/pci@...00000:interrupt-map:
    Missing property '#address-cells' in node /soc/interrupt-controller@...00000, 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/amazon/alpine-v2.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/amazon/alpine-v2.dtsi b/arch/arm64/boot/dts/amazon/alpine-v2.dtsi
index 5a72f0b64247..f49209fddbbb 100644
--- a/arch/arm64/boot/dts/amazon/alpine-v2.dtsi
+++ b/arch/arm64/boot/dts/amazon/alpine-v2.dtsi
@@ -123,6 +123,7 @@ gic: interrupt-controller@...00000 {
 			      <0x0 0xf0120000 0x0 0x2000>;	/* GICH */
 			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
 			interrupt-controller;
+			#address-cells = <0>;
 			#interrupt-cells = <3>;
 		};
 
-- 
2.48.1