From: Aaron Kling <webgeek1234@gmail.com>
Date: Mon, 4 Aug 2025 03:14:30 +0000 (-0500)
Subject: arm64: tegra: Add reserved-memory node for P3450
X-Git-Tag: v6.19-rc1~100^2~23^2~6
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=28f917d1a84afc86853513351cb0320844f51265;p=thirdparty%2Fkernel%2Flinux.git

arm64: tegra: Add reserved-memory node for P3450

The Tegra210 L4T bootloader RAM training will corrupt the in-RAM kernel
DT if no reserved-memory node exists. This prevents said bootloader from
being able to boot a kernel without this node, unless a chainloaded
bootloader loads the DT. Add the node to eliminate the requirement for
extra boot stages.

Signed-off-by: Aaron Kling <webgeek1234@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
---

diff --git a/arch/arm64/boot/dts/nvidia/tegra210-p3450-0000.dts b/arch/arm64/boot/dts/nvidia/tegra210-p3450-0000.dts
index f1d2606d9808a..99b75a6b2dfeb 100644
--- a/arch/arm64/boot/dts/nvidia/tegra210-p3450-0000.dts
+++ b/arch/arm64/boot/dts/nvidia/tegra210-p3450-0000.dts
@@ -22,6 +22,12 @@
 		stdout-path = "serial0:115200n8";
 	};
 
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+	};
+
 	memory@80000000 {
 		device_type = "memory";
 		reg = <0x0 0x80000000 0x1 0x0>;