[PATCH v3 01/22] arm64: dts: mediatek: mt7988: Add reserved memory

Frank Wunderlich
2024-12-17T09:12:53Z

Add memory range handled by ATF to not be touched by linux kernel.
ATF is SoC specific and not board-specific so add it to mt7988.dtsi.

Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
---
changes: v3:
- move commit to first of series
- drop secmon_reserved label
---
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 46969577c87a..d205717ac78b 100644
--- a/arch/arm64/boot/dts/mediatek/mt7988a.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt7988a.dtsi
@@ -62,6 +62,18 @@ psci {
method = "smc";
};

+ reserved-memory {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ /* 320 KiB reserved for ARM Trusted Firmware (BL31 and BL32) */
+ secmon@43000000 {
+ reg = <0 0x43000000 0 0x50000>;
+ no-map;
+ };
+ };
+
soc {
compatible = "simple-bus";
ranges;
--
2.43.0