File 0001-dts-arm64-rp1-Fix-PCIe-topology.patch of Package raspberrypi-firmware-dt

From 528f90abf15da814eba18cbbb82c65f3e9b2a5d7 Mon Sep 17 00:00:00 2001
From: Andrea della Porta <andrea.porta@suse.com>
Date: Mon, 9 Feb 2026 14:41:16 +0100
Subject: [PATCH] dts: arm64: rp1: Fix PCIe topology

RP1 chipset on RaspberryPi 5 is described in the DT as a
device directly under PCIe controller node, which is not
how the topology actually works.

Fix the node tree to reflect the hw path:
RootComplex -> RootPort -> RP1 endpoint

This is mandatory since the upstream driver dropped overlay
support and relies on the of_node to be correctly
coupled with the pci_device structure.

Signed-off-by: Andrea della Porta <andrea.porta@suse.com>
---
 arch/arm64/boot/dts/broadcom/rp1.dtsi | 22 +++++++++++++++-------
 1 file changed, 15 insertions(+), 7 deletions(-)

diff --git a/arch/arm64/boot/dts/broadcom/rp1.dtsi b/arch/arm64/boot/dts/broadcom/rp1.dtsi
index 4411ae5..31242b7 100644
--- a/arch/arm64/boot/dts/broadcom/rp1.dtsi
+++ b/arch/arm64/boot/dts/broadcom/rp1.dtsi
@@ -3,17 +3,24 @@
 #include <dt-bindings/mfd/rp1.h>
 
 &rp1_target {
-    rp1_nexus {
+  pci@0,0 {
+    reg = <0x0 0x0 0x0 0x0 0x0>;
+    ranges;
+    bus-range = <0 1>;
+    device_type = "pci";
+    #address-cells = <3>;
+    #size-cells = <2>;
+
+    dev@0,0 {
 	compatible = "pci1de4,1";
-	#address-cells = <3>;
-	#size-cells = <2>;
-	ranges = <0x01 0x00 0x00000000
-		  0x02000000 0x00 0x00000000
-		  0x0 0x410000>;
+	reg = <0x10000 0x0 0x0 0x0 0x0>;
+	ranges = <0x1 0x0 0x0 0x82010000 0x0 0x0 0x0 0x400000>;
 	interrupt-controller;
 	#interrupt-cells = <2>;
+	#address-cells = <3>;
+	#size-cells = <2>;
 
-	rp1: rp1 {
+  	rp1: rp1 {
 		compatible = "simple-bus";
 		#address-cells = <2>;
 		#size-cells = <2>;
@@ -1250,6 +1257,7 @@
 		};
 	};
     };
+  };
 };
 
 &clocks {
-- 
2.51.0