From: Sjoerd Simons <sjoerd@collabora.com>
Date: Sat, 1 Nov 2025 13:32:47 +0000 (+0100)
Subject: arm64: dts: mediatek: mt7981b: Add reserved memory for TF-A
X-Git-Tag: v6.19-rc1~100^2~28^2~8
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c6dcf3283044533ec425eb45af3627ec8834aebe;p=thirdparty%2Fkernel%2Flinux.git

arm64: dts: mediatek: mt7981b: Add reserved memory for TF-A

Add memory range handled by ARM Trusted Firmware

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Sjoerd Simons <sjoerd@collabora.com>
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---

diff --git a/arch/arm64/boot/dts/mediatek/mt7981b.dtsi b/arch/arm64/boot/dts/mediatek/mt7981b.dtsi
index 4fa35bbf0a9cd..130ce2fda3995 100644
--- a/arch/arm64/boot/dts/mediatek/mt7981b.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt7981b.dtsi
@@ -41,6 +41,18 @@
 		method = "smc";
 	};
 
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		/* 192 KiB reserved for ARM Trusted Firmware (BL31) */
+		secmon_reserved: secmon@43000000 {
+			reg = <0 0x43000000 0 0x30000>;
+			no-map;
+		};
+	};
+
 	soc {
 		compatible = "simple-bus";
 		ranges;