From d42c64cf161644929de081e541afbab33acb231a Mon Sep 17 00:00:00 2001
From: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@renesas.com>
Date: Mon, 1 Dec 2025 13:29:33 +0200
Subject: [PATCH] arm64: dts: renesas: r9a09g087: Add ICU support

The Renesas RZ/N2H (R9A09G087) SoC has an Interrupt Controller (ICU)
block that routes external interrupts to the GIC's SPIs, with the
ability of level-translation, and can also produce software and
aggregate error interrupts.

Add support for it.

Signed-off-by: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20251201112933.488801-5-cosmin-gabriel.tanislav.xa@renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
 arch/arm64/boot/dts/renesas/r9a09g087.dtsi | 73 ++++++++++++++++++++++
 1 file changed, 73 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r9a09g087.dtsi b/arch/arm64/boot/dts/renesas/r9a09g087.dtsi
index e273a9aca5687..9809a6a9c1c08 100644
--- a/arch/arm64/boot/dts/renesas/r9a09g087.dtsi
+++ b/arch/arm64/boot/dts/renesas/r9a09g087.dtsi
@@ -831,6 +831,79 @@
 			#power-domain-cells = <0>;
 		};
 
+		icu: interrupt-controller@802a0000 {
+			compatible = "renesas,r9a09g087-icu", "renesas,r9a09g077-icu";
+			reg = <0 0x802a0000 0 0x10000>,
+			      <0 0x812a0000 0 0x10000>;
+			#interrupt-cells = <2>;
+			#address-cells = <0>;
+			interrupt-controller;
+			interrupts = <GIC_SPI 0 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 1 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 2 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 3 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 4 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 5 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 6 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 7 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 8 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 9 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 10 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 11 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 12 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 13 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 14 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 15 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 16 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 17 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 18 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 19 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 20 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 21 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 22 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 23 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 24 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 25 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 26 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 27 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 28 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 29 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 30 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 31 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 406 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 407 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 408 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 409 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 410 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 411 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 412 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 413 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 414 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 415 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 416 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 417 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 418 IRQ_TYPE_EDGE_RISING>;
+			interrupt-names = "intcpu0", "intcpu1", "intcpu2",
+					  "intcpu3", "intcpu4", "intcpu5",
+					  "intcpu6", "intcpu7", "intcpu8",
+					  "intcpu9", "intcpu10", "intcpu11",
+					  "intcpu12", "intcpu13", "intcpu14",
+					  "intcpu15",
+					  "irq0", "irq1", "irq2", "irq3",
+					  "irq4", "irq5", "irq6", "irq7",
+					  "irq8", "irq9", "irq10", "irq11",
+					  "irq12", "irq13", "irq14", "irq15",
+					  "sei",
+					  "ca55-err0", "ca55-err1",
+					  "cr520-err0", "cr520-err1",
+					  "cr521-err0", "cr521-err1",
+					  "peri-err0", "peri-err1",
+					  "dsmif-err0", "dsmif-err1",
+					  "encif-err0", "encif-err1";
+			clocks = <&cpg CPG_CORE R9A09G087_CLK_PCLKM>;
+			power-domains = <&cpg>;
+		};
+
 		pinctrl: pinctrl@802c0000 {
 			compatible = "renesas,r9a09g087-pinctrl";
 			reg = <0 0x802c0000 0 0x10000>,
-- 
2.47.3