File 0001-arm64-bcm2712-Fix-GPU-support.patch of Package raspberrypi-firmware-dt

From 98a0f221b24f33b0c6743f9c46d898a2fd76f6fc Mon Sep 17 00:00:00 2001
From: Andrea della Porta <andrea.porta@suse.com>
Date: Thu, 19 Mar 2026 11:22:48 +0100
Subject: [PATCH] arm64: bcm2712: Fix GPU support

Add a new `reg` property with a lower base address than the `v3d`
device. This is required to ensure the `vc4` device is enumerated
as the primary display card.

Additionally, disable the associated `iommu` node, as it currently
lacks driver support.

Signed-off-by: Andrea della Porta <andrea.porta@suse.com>
---
 arch/arm64/boot/dts/broadcom/bcm2712-ds.dtsi | 1 +
 arch/arm64/boot/dts/broadcom/bcm2712.dtsi    | 1 +
 2 files changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/broadcom/bcm2712-ds.dtsi b/arch/arm64/boot/dts/broadcom/bcm2712-ds.dtsi
index 88b5cde..451ee70 100644
--- a/arch/arm64/boot/dts/broadcom/bcm2712-ds.dtsi
+++ b/arch/arm64/boot/dts/broadcom/bcm2712-ds.dtsi
@@ -295,6 +295,7 @@
 		cache = <&iommuc>;
 		#iommu-cells = <0>;
 		#interconnect-cells = <0>;
+		status = "disabled";
 	};
 
 	iommu5: iommu@5280 {
diff --git a/arch/arm64/boot/dts/broadcom/bcm2712.dtsi b/arch/arm64/boot/dts/broadcom/bcm2712.dtsi
index e5f7cb3..1e4213a 100644
--- a/arch/arm64/boot/dts/broadcom/bcm2712.dtsi
+++ b/arch/arm64/boot/dts/broadcom/bcm2712.dtsi
@@ -442,6 +442,7 @@
 
 		vc4: gpu {
 			compatible = "brcm,bcm2712-vc6";
+			reg = <0x10 0x1000000 0x00 0x00>;
 		};
 
 		pcie0: pcie@1000100000 {
-- 
2.51.0