From: Aaron Kling <webgeek1234@gmail.com>
Date: Mon, 4 Aug 2025 03:14:31 +0000 (-0500)
Subject: arm64: tegra: Add reserved-memory node for P2180
X-Git-Tag: v6.19-rc1~100^2~23^2~5
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=3da2ea1933c6372e22d2a536bbe86dd3e7d09121;p=thirdparty%2Fkernel%2Fstable.git

arm64: tegra: Add reserved-memory node for P2180

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-p2180.dtsi b/arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi
index e07aeeee35867..9ee7952af7997 100644
--- a/arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi
@@ -18,6 +18,12 @@
 		stdout-path = "serial0:115200n8";
 	};
 
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+	};
+
 	memory@80000000 {
 		device_type = "memory";
 		reg = <0x0 0x80000000 0x1 0x0>;