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Message-ID: <20241029103937.45852-13-linux@fw-web.de>
Date: Tue, 29 Oct 2024 11:39:31 +0100
From: Frank Wunderlich <linux@...web.de>
To: Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Matthias Brugger <matthias.bgg@...il.com>,
AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Cc: Frank Wunderlich <frank-w@...lic-files.de>,
devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-mediatek@...ts.infradead.org
Subject: [RFC v1 12/14] arm64: dts: mediatek: mt7988: add reserved memory
From: Frank Wunderlich <frank-w@...lic-files.de>
Add memory range handled by ATF to not be touched by linux kernel.
Signed-off-by: Frank Wunderlich <frank-w@...lic-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@...00000 {
+ reg = <0 0x43000000 0 0x50000>;
+ no-map;
+ };
+ };
+
soc {
compatible = "simple-bus";
ranges;
--
2.43.0
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