[PATCH 03/15] arm64: dts: mediatek: mt7981b: Add reserved memory for TF-A

Sjoerd Simons
2025-10-16T10:09:18Z

Add memory range handled by ARM Trusted Firmware

Signed-off-by: Sjoerd Simons <sjoerd@collabora.com>
---
arch/arm64/boot/dts/mediatek/mt7981b.dtsi | 12 ++++++++++++
1 file changed, 12 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt7981b.dtsi b/arch/arm64/boot/dts/mediatek/mt7981b.dtsi
index 6b024156fa7c5..b477375078ccd 100644
--- a/arch/arm64/boot/dts/mediatek/mt7981b.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt7981b.dtsi
@@ -41,6 +41,18 @@ psci {
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;

--
2.51.0