[PATCH] riscv: dts: sophgo: sg2000-milkv-duo-s: reserve memory for RTOS

[Andrei Lalaev]

The FSBL loads the coprocessor firmware into the last 2 MB of RAM.
Reserve this region to prevent Linux from using it.

Signed-off-by: Andrei Lalaev <andrey.lalaev@xxxxxxxxx>
---
 arch/riscv/boot/dts/sophgo/sg2000-milkv-duo-s.dts | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/riscv/boot/dts/sophgo/sg2000-milkv-duo-s.dts b/arch/riscv/boot/dts/sophgo/sg2000-milkv-duo-s.dts
index 78a257839f6f..693c9fd7b771 100644
--- a/arch/riscv/boot/dts/sophgo/sg2000-milkv-duo-s.dts
+++ b/arch/riscv/boot/dts/sophgo/sg2000-milkv-duo-s.dts
@@ -22,6 +22,17 @@ chosen {
 		stdout-path = "serial0:115200n8";
 	};
 
+	reserved-memory {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		coprocessor_rtos: region@9fe00000 {
+			reg = <0x9fe00000 0x200000>;
+			no-map;
+		};
+	};
+
 	wifi_pwrseq: wifi-pwrseq {
 		compatible = "mmc-pwrseq-simple";
 		reset-gpios = <&porta 15 GPIO_ACTIVE_LOW>;

---
base-commit: 9b87fdc9af2fbfcdb5c24a64139685ef80f6573f
change-id: 20260916-milkv-duo-s-rtos-memory-7a94933e35bd

Best regards,
--  
Andrei Lalaev <andrey.lalaev@xxxxxxxxx>