linux-kernel - [PATCH 08/10] arm64: dts: imx8qm: Add default GIC address cells

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Message-Id: <20250822-b4-dts-interrupt-address-cells-imx-v1-8-f1b479da9340@linaro.org>
Date: Fri, 22 Aug 2025 15:31:17 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Shawn Guo <shawnguo@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>
Cc: linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, imx@...ts.linux.dev, 
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH 08/10] arm64: dts: imx8qm: Add default GIC address cells

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

  imx8qm-ss-hsio.dtsi:83.3-86.28: Warning (interrupt_map): /bus@...00000/pcie@...10000:interrupt-map:
    Missing property '#address-cells' in node /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/freescale/imx8qm.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8qm.dtsi b/arch/arm64/boot/dts/freescale/imx8qm.dtsi
index 827e1365b5dae438d4628852ed6884aa846eb89b..5206ca82eaf642a32299147e9c1b45704075e2b2 100644
--- a/arch/arm64/boot/dts/freescale/imx8qm.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8qm.dtsi
@@ -245,6 +245,7 @@ gic: interrupt-controller@...00000 {
 		      <0x0 0x52000000 0 0x2000>,  /* GICC */
 		      <0x0 0x52010000 0 0x1000>,  /* GICH */
 		      <0x0 0x52020000 0 0x20000>; /* GICV */
+		#address-cells = <0>;
 		#interrupt-cells = <3>;
 		interrupt-controller;
 		interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;

-- 
2.48.1