diff mbox series

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

Message ID 20241029103937.45852-13-linux@fw-web.de (mailing list archive)
State New
Headers show
Series Add some mt7988 DTS labels and new nodes | expand

Commit Message

Frank Wunderlich Oct. 29, 2024, 10:39 a.m. UTC 
From: Frank Wunderlich <frank-w@public-files.de>

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

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

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@43000000 {
+			reg = <0 0x43000000 0 0x50000>;
+			no-map;
+		};
+	};
+
 	soc {
 		compatible = "simple-bus";
 		ranges;