diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 0d4ae6d03e16..102fa9e6b3ae 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -1189,7 +1189,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += \
 	rv1126b-evb2-v10-mcu-k350c4516t.dtb \
 	rv1126b-evb2-v10-rgb-Q7050ITH2641AA1T.dtb \
 	rv1126b-evb2-v10-sii9022-bt1120-to-hdmi.dtb \
-	rv1126b-evb2-v10-tb-400w.dtb \
+	rv1126b-evb2-v10-tb-400w-spi-nor.dtb \
 	rv1126b-evb3-v10.dtb \
 	rv1126b-evb4-v10.dtb \
 	rv1126b-iotest-v10.dtb \
diff --git a/arch/arm64/boot/dts/rockchip/rv1126b-evb2-v10-tb-400w.dts b/arch/arm/boot/dts/rv1126b-evb2-v10-tb-400w-spi-nor.dts
similarity index 79%
rename from arch/arm64/boot/dts/rockchip/rv1126b-evb2-v10-tb-400w.dts
rename to arch/arm/boot/dts/rv1126b-evb2-v10-tb-400w-spi-nor.dts
index c1ba05974b77..ad9c331b2226 100644
--- a/arch/arm64/boot/dts/rockchip/rv1126b-evb2-v10-tb-400w.dts
+++ b/arch/arm/boot/dts/rv1126b-evb2-v10-tb-400w-spi-nor.dts
@@ -4,15 +4,15 @@
  */
 
 /dts-v1/;
-#include "rv1126b.dtsi"
-#include "rv1126b-evb.dtsi"
-#include "rv1126b-evb2-v10.dtsi"
+#include "arm64/rockchip/rv1126b.dtsi"
+#include "arm64/rockchip/rv1126b-evb.dtsi"
+#include "arm64/rockchip/rv1126b-evb2-v10.dtsi"
 #include "rv1126b-thunder-boot-cam.dtsi"
 #include "rv1126b-thunder-boot-spi-nor.dtsi"
 
 / {
-	model = "Rockchip RV1126B EVB2 V10 ARM64 TB 400W Board";
-	compatible = "rockchip,rv1126b-evb2-v10-tb-400w", "rockchip,rv1126b";
+	model = "Rockchip RV1126B EVB2 V10 TB 400W SPI NorFlash Board";
+	compatible = "rockchip,rv1126b-evb2-v10-tb-400w-spi-nor", "rockchip,rv1126b";
 
 	chosen {
 		bootargs = "loglevel=0 initcall_nr_threads=-1 initcall_debug=0 earlycon=uart8250,mmio32,0x20810000 console=ttyFIQ0 root=/dev/rd0 rootfstype=erofs rootflags=dax snd_soc_core.prealloc_buffer_size_kbytes=16 coherent_pool=32K";
@@ -28,7 +28,6 @@
 
 	sc450ai: sc450ai@30 {
 		compatible = "smartsens,sc450ai";
-		status = "okay";
 		reg = <0x30>;
 		clocks = <&cru CLK_MIPI0_OUT2IO>;
 		clock-names = "xvclk";
@@ -50,11 +49,11 @@
 };
 
 &ramdisk_r {
-	reg = <0x48c40000 (40 * 0x00100000)>;
+	reg = <0x48c40000 (30 * 0x00100000)>;
 };
 
 &ramdisk_c {
-	reg = <0x4b440000 (20 * 0x00100000)>;
+	reg = <0x4aa40000 (20 * 0x00100000)>;
 };
 
 &rkisp_thunderboot {
diff --git a/arch/arm/boot/dts/rv1126b-evb2-v10-tb-400w.dts b/arch/arm/boot/dts/rv1126b-evb2-v10-tb-400w.dts
deleted file mode 100644
index 5d1bfda82ece..000000000000
--- a/arch/arm/boot/dts/rv1126b-evb2-v10-tb-400w.dts
+++ /dev/null
@@ -1,19 +0,0 @@
-// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
-/*
- * Copyright (c) 2025 Rockchip Electronics Co., Ltd.
- */
-
-#include "arm64/rockchip/rv1126b-evb2-v10-tb-400w.dts"
-
-/ {
-	model = "Rockchip RV1126B EVB2 V10 TB 400W Board";
-	compatible = "rockchip,rv1126b-evb2-v10-tb-400w", "rockchip,rv1126b";
-};
-
-&ramdisk_r {
-	reg = <0x48c40000 (30 * 0x00100000)>;
-};
-
-&ramdisk_c {
-	reg = <0x4aa40000 (20 * 0x00100000)>;
-};
diff --git a/arch/arm64/boot/dts/rockchip/rv1126b-thunder-boot-cam.dtsi b/arch/arm/boot/dts/rv1126b-thunder-boot-cam.dtsi
similarity index 100%
rename from arch/arm64/boot/dts/rockchip/rv1126b-thunder-boot-cam.dtsi
rename to arch/arm/boot/dts/rv1126b-thunder-boot-cam.dtsi
diff --git a/arch/arm64/boot/dts/rockchip/rv1126b-thunder-boot-emmc.dtsi b/arch/arm/boot/dts/rv1126b-thunder-boot-emmc.dtsi
similarity index 100%
rename from arch/arm64/boot/dts/rockchip/rv1126b-thunder-boot-emmc.dtsi
rename to arch/arm/boot/dts/rv1126b-thunder-boot-emmc.dtsi
diff --git a/arch/arm64/boot/dts/rockchip/rv1126b-thunder-boot-spi-nor.dtsi b/arch/arm/boot/dts/rv1126b-thunder-boot-spi-nor.dtsi
similarity index 100%
rename from arch/arm64/boot/dts/rockchip/rv1126b-thunder-boot-spi-nor.dtsi
rename to arch/arm/boot/dts/rv1126b-thunder-boot-spi-nor.dtsi
diff --git a/arch/arm64/boot/dts/rockchip/rv1126b-thunder-boot.dtsi b/arch/arm/boot/dts/rv1126b-thunder-boot.dtsi
similarity index 98%
rename from arch/arm64/boot/dts/rockchip/rv1126b-thunder-boot.dtsi
rename to arch/arm/boot/dts/rv1126b-thunder-boot.dtsi
index 3c7d15df6207..b66d0d5f6d18 100644
--- a/arch/arm64/boot/dts/rockchip/rv1126b-thunder-boot.dtsi
+++ b/arch/arm/boot/dts/rv1126b-thunder-boot.dtsi
@@ -116,7 +116,7 @@
 	};
 
 	rtos: rtos@48c00000 {
-		reg = <0x48c00000 0x0003a000>;
+		reg = <0x48c00000 0x0003c000>;
 	};
 
 	mcu_log: mcu_log@48c3c000 {