[RFC v1 12/14] arm64: dts: mediatek: mt7988: add reserved memory

[Frank Wunderlich]

From: Frank Wunderlich <frank-w at public-files.de>

Add memory range handled by ATF to not be touched by linux kernel.

Signed-off-by: Frank Wunderlich <frank-w at public-files.de>
---
 arch/arm64/boot/dts/mediatek/mt7988a.dtsi | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt7988a.dtsi b/arch/arm64/boot/dts/mediatek/mt7988a.dtsi
index a3a7deda35a5..7721d2ec06ee 100644
--- a/arch/arm64/boot/dts/mediatek/mt7988a.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt7988a.dtsi
@@ -81,6 +81,18 @@ reg_3p3v: regulator-3p3v {
 		regulator-always-on;
 	};
 
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		/* 320 KiB reserved for ARM Trusted Firmware (BL31 and BL32) */
+		secmon_reserved: secmon at 43000000 {
+			reg = <0 0x43000000 0 0x50000>;
+			no-map;
+		};
+	};
+
 	soc {
 		compatible = "simple-bus";
 		ranges;
-- 
2.43.0