linux-kernel - [PATCH 05/10] arm64: dts: imx8mm: Add default GIC address cells

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Message-Id: <20250822-b4-dts-interrupt-address-cells-imx-v1-5-f1b479da9340@linaro.org>
Date: Fri, 22 Aug 2025 15:31:14 +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 05/10] arm64: dts: imx8mm: Add default GIC address cells

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

  imx8mm.dtsi:1355.4-1358.29: Warning (interrupt_map): /soc@...cie@...00000:interrupt-map:
    Missing property '#address-cells' in node /soc@...nterrupt-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/imx8mm.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
index ded89b04697014771c20cd7c285d01b73ac9edb9..fc3cd639310ef07d6d14c457af607f61e2288b1e 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
@@ -1467,6 +1467,7 @@ gic: interrupt-controller@...00000 {
 			compatible = "arm,gic-v3";
 			reg = <0x38800000 0x10000>, /* GIC Dist */
 			      <0x38880000 0xc0000>; /* GICR (RD_base + SGI_base) */
+			#address-cells = <0>;
 			#interrupt-cells = <3>;
 			interrupt-controller;
 			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;

-- 
2.48.1